DigPhotog: Exposure and Histograms (W11-P1) Sp18

In the field of statistics, a histogram is "a graphical representation of the distribution of data."  The histogram below shows the distribution of black cherry trees according to height.  Note that there are many trees between 70 and 80 inches tall and a few that are 60-65 inches tall and even fewer that are 85-90 inches tall.

Graphic credit: Mwtoews. Used under Creative Commons

In the field of photography, a histogram is defined in a similar way.  It is a graphical representation of data.  But, what data?  A histogram for a photograph is "a graphical representation of the tonal distribution in a digital image.  It plots the number of pixels for each tonal value."  The tones in a photograph range from shadows (the darker areas or pixels) to midtones (grey areas or pixels) to highlights (the white or bright areas of the photograph).  A photograph which is underexposed, for example, would have lots of shadow.

For visuals and further discussion see the videos below.



A key question: How could you use a histogram to determine if your photos have proper exposure?




A good app for showing the histogram on both iOS and Android is called PicsPlay.  Get the free version first.

Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Controlling Light (F-Stops, Shutter Speed, ISO, etc.) (W7-P2) [VID] Sp18

As a photographer, your task is to control light. You are a master of light.

When you turn that dial from "auto" to "manual", you are taking control of the light coming into your camera.  Two key ways of controlling the amount of light coming into your camera are by setting the f-stop and the shutter speed.

Here now we have two options for coverage of f-stops, shutter speeds and ISO.  Check out at least one of these.

Option 1


Option 2



If you are curious, you might check out "A Picture To Show You Clearly The Effects of Aperture, Shutter Speed and ISO On Images."

Also, if you are curious and want to get a little more techie, you can optionally check out the following video.  Note the exposure triangle.





EXIF Apps and the Exposure Triangle

There are apps that allow you to see the f-stop, shutter speed and ISO settings for your photographs.  If you recall, the f-stop, shutter speed and ISO data and other data (e.g., date, time, GPS location) is what is called EXIF data.  For android devices one EXIF viewer app is Simple Exif Viewer.  For iOS devices an EXIF viewer app is Exif Viewer. A Google search will also show EXIF viewers for laptops and desktops.

Use one of the EXIF viewers and check the f-stop, shutter speed and ISO settings for your photographs. See if the settings or values make sense.  For example, would an ISO setting/value of 800 for an indoor photo make sense?  Why?   Would a shutter speed of 1/2 second for a blurry sports photo make sense?  Why?

Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Exposure and Histograms (W11-P1) Sp16

In the field of statistics, a histogram is "a graphical representation of the distribution of data."  The histogram below shows the distribution of black cherry trees according to height.  Note that there are many trees between 70 and 80 inches tall and a few that are 60-65 inches tall and even fewer that are 85-90 inches tall.

Graphic credit: Mwtoews. Used under Creative Commons

In the field of photography, a histogram is defined in a similar way.  It is a graphical representation of data.  But, what data?  A histogram for a photograph is "a graphical representation of the tonal distribution in a digital image.  It plots the number of pixels for each tonal value."  The tones in a photograph range from shadows (the darker areas or pixels) to midtones (grey areas or pixels) to highlights (the white or bright areas of the photograph).  A photograph which is underexposed, for example, would have lots of shadow.

For visuals and further discussion see the videos below.



A key question: How could you use a histogram to determine if your photos have proper exposure?




A good app for showing the histogram on both iOS and Android is called PicsPlay.  Get the free version first.

Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Controlling Light (F-Stops, Shutter Speed, ISO, etc.) (W7-P1) [VID] Sp16

As a photographer, your task is to control light. You are a master of light.

When you turn that dial from "auto" to "manual", you are taking control of the light coming into your camera.  Two key ways of controlling the amount of light coming into your camera are by setting the f-stop and the shutter speed.

Here now we have two options for coverage of f-stops, shutter speeds and ISO.  Check out at least one of these.

Option 1


Option 2



If you are curious, you might check out "A Picture To Show You Clearly The Effects of Aperture, Shutter Speed and ISO On Images."

Also, if you are curious and want to get a little more techie, you can optionally check out the following video.  Note the exposure triangle.





EXIF Apps and the Exposure Triangle

There are apps that allow you to see the f-stop, shutter speed and ISO settings for your photographs.  If you recall, the f-stop, shutter speed and ISO data and other data (e.g., date, time, GPS location) is what is called EXIF data.  For android devices one EXIF viewer app is Simple Exif Viewer.  For iOS devices an EXIF viewer app is Exif Viewer. A Google search will also show EXIF viewers for laptops and desktops.

Use one of the EXIF viewers and check the f-stop, shutter speed and ISO settings for your photographs. See if the settings or values make sense.  For example, would an ISO setting/value of 800 for an indoor photo make sense?  Why?   Would a shutter speed of 1/2 second for a blurry sports photo make sense?  Why?


Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Exposure and Histograms (W9-P2) Fa15

In the field of statistics, a histogram is "a graphical representation of the distribution of data."  The histogram below shows the distribution of black cherry trees according to height.  Note that there are many trees between 70 and 80 inches tall and a few that are 60-65 inches tall and even fewer that are 85-90 inches tall.

Graphic credit: Mwtoews. Used under Creative Commons

In the field of photography, a histogram is defined in a similar way.  It is a graphical representation of data.  But, what data?  A histogram for a photograph is "a graphical representation of the tonal distribution in a digital image.  It plots the number of pixels for each tonal value."  The tones in a photograph range from shadows (the darker areas or pixels) to midtones (grey areas or pixels) to highlights (the white or bright areas of the photograph).  A photograph which is underexposed, for example, would have lots of shadow.

For visuals and further discussion see the videos below.



A key question: How could you use a histogram to determine if your photos have proper exposure?




A good app for showing the histogram on both iOS and Android is called PicsPlay.  Get the free version first.


Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Controlling Light (F-Stops, Shutter Speed, ISO, etc.) (W8-P1) [VID] Fa15

As a photographer, your task is to control light. You are a master of light.

When you turn that dial from "auto" to "manual", you are taking control of the light coming into your camera.  Two key ways of controlling the amount of light coming into your camera are by setting the f-stop and the shutter speed.

For a partial introduction to f-stops and shutter speed, check out the following video excerpt from Brian Ratty's video series (Digital Photography - The Camera (Tutorial DVD)). The videos are now a little dated, but still cover the basics well.




F-stops and shutter speeds are not the only ways you can control light.  You can adjust the ISO settings or use flash, for example.  You can adjust f-stops, shutter speeds, ISO, flash, etc. to get just the right amount of light into your camera -- that perfect exposure.



"Let's Get Techie" does a good job of adding some further details.  Note the exposure triangle.




There are apps that allow you to see the f-stop, shutter speed and ISO settings for your photographs.  If you recall, the f-stop, shutter speed and ISO data and other data (e.g., date, time, GPS location) is what is called EXIF data.  For android devices one EXIF viewer app is Simple Exif Viewer.  For iOS devices an EXIF viewer app is Exif Viewer. A Google search will also show EXIF viewers for laptops and desktops.

Use one of the EXIF viewers and check the f-stop, shutter speed and ISO settings for your photographs. See if the settings or values make sense.  For example, would an ISO setting/value of 800 for an indoor photo make sense?  Why?   Would a shutter speed of 1/2 second for a blurry sports photo make sense?  Why?



Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Exposure and Histograms (W10-P2) Sp15

In the field of statistics, a histogram is "a graphical representation of the distribution of data."  The histogram below shows the distribution of black cherry trees according to height.  Note that there are many trees between 70 and 80 inches tall and a few that are 60-65 inches tall and even fewer that are 85-90 inches tall.

Graphic credit: Mwtoews. Used under Creative Commons

In the field of photography, a histogram is defined in a similar way.  It is a graphical representation of data.  But, what data?  A histogram for a photograph is "a graphical representation of the tonal distribution in a digital image.  It plots the number of pixels for each tonal value."  The tones in a photograph range from shadows (the darker areas or pixels) to midtones (grey areas or pixels) to highlights (the white or bright areas of the photograph).  A photograph which is underexposed, for example, would have lots of shadow.

For visuals and further discussion see the videos below.



A key question: How could you use a histogram to determine if your photos have proper exposure?




A good app for showing the histogram on both iOS and Android is called PicsPlay.  Get the free version first.


Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Controlling Light (F-Stops, Shutter Speed, ISO, etc.) (W8-P1) [VID] Sp15

As a photographer, your task is to control light. You are a master of light.

When you turn that dial from "auto" to "manual", you are taking control of the light coming into your camera.  Two key ways of controlling the amount of light coming into your camera are by setting the f-stop and the shutter speed.

For a partial introduction to f-stops and shutter speed, check out the following video excerpt from Brian Ratty's video series (Digital Photography - The Camera (Tutorial DVD)). The videos are now a little dated, but still cover the basics well.




F-stops and shutter speeds are not the only ways you can control light.  You can adjust the ISO settings or use flash, for example.  You can adjust f-stops, shutter speeds, ISO, flash, etc. to get just the right amount of light into your camera -- that perfect exposure.



"Let's Get Techie" does a good job of adding some further details.  Note the exposure triangle.




There are apps that allow you to see the f-stop, shutter speed and ISO settings for your photographs.  If you recall, the f-stop, shutter speed and ISO data and other data (e.g., date, time, GPS location) is what is called EXIF data.  For android devices one EXIF viewer app is Simple Exif Viewer.  For iOS devices an EXIF viewer app is Exif Viewer. A Google search will also show EXIF viewers for laptops and desktops.

Use one of the EXIF viewers and check the f-stop, shutter speed and ISO settings for your photographs. See if the settings or values make sense.  For example, would an ISO setting/value of 800 for an indoor photo make sense?  Why?   Would a shutter speed of 1/2 second for a blurry sports photo make sense?  Why?



Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Exposure and Histograms (U7-P2) Fa14

In the field of statistics, a histogram is "a graphical representation of the distribution of data."  The histogram below shows the distribution of black cherry trees according to height.  Note that there are many trees between 70 and 80 inches tall and a few that are 60-65 inches tall and even fewer that are 85-90 inches tall.

Graphic credit: Mwtoews. Used under Creative Commons

In the field of photography, a histogram is similar, it is a graphical representation of data.  But, what data?
A histogram for a photograph is "a graphical representation of the tonal distribution in a digital image.  It plots the number of pixels for each tonal value."  The tones in a photograph range from shadows (the darker areas or pixels) to midtones (grey areas or pixels) to highlights (the white or bright areas of the photograph).
A photograph which is underexposed, for example, would have lots of shadow.

For visuals and further discussion see the videos below.



A key question: How could you use a histogram to determine if your photos have proper exposure?




A good app for showing the histogram on both iOS and Android is called PicsPlay.  Get the free version first.


Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Controlling Light (F-Stops, Shutter Speed, ISO, etc.) (U6-P1) [VID] Fa14

As a photographer, your task is to control light. You are a master of light.

When you turn that dial from "auto" to "manual", you are taking control of the light coming into your camera.  Two key ways of controlling the amount of light coming into your camera are by setting the f-stop and the shutter speed.

For a partial introduction to f-stops and shutter speed, check out the following video excerpt from Brian Ratty's video series (Digital Photography - The Camera (Tutorial DVD)). The videos are now a little dated, but still cover the basics well.




F-stops and shutter speeds are not the only ways you can control light.  You can adjust the ISO settings or use flash, for example.  You can adjust f-stops, shutter speeds, ISO, flash, etc. to get just the right amount of light into your camera -- that perfect exposure.



"Let's Get Techie" does a good job of adding some further details.  Note the exposure triangle.




There are apps that allow you to see the f-stop, shutter speed and ISO settings for your photographs.  If you recall, the f-stop, shutter speed and ISO data and other data (e.g., date, time, GPS location) is what is called EXIF data.  For android devices one EXIF viewer app is Simple Exif Viewer.  For iOS devices an EXIF viewer app is Exif Viewer. A Google search will also show EXIF viewers for laptops and desktops.

Use one of the EXIF viewers and check the f-stop, shutter speed and ISO settings for your photographs. See if the settings or values make sense.  For example, would an ISO setting/value of 800 for an indoor photo make sense?  Why?   Would a shutter speed of 1/2 second for a blurry sports photo make sense?  Why?



Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Exposure and Histograms (U7-P2) Sp14

In the field of statistics, a histogram is "a graphical representation of the distribution of data."  The histogram below shows the distribution of black cherry trees according to height.  Note that there are many trees between 70 and 80 inches tall and a few that are 60-65 inches tall and even fewer that are 85-90 inches tall.

Graphic credit: Mwtoews. Used under Creative Commons

In the field of photography, a histogram is similar, it is a graphical representation of data.  But, what data?
A histogram for a photograph is "a graphical representation of the tonal distribution in a digital image.  It plots the number of pixels for each tonal value."  The tones in a photography range from shadows (the darker areas or pixels) to midtones (grey areas or pixels) to highlights (the white or bright areas of the photograph).
A photograph which is underexposed, for example, would have lots of shadow.

For visuals and further discussion see the videos below.



A key question: How could you use a histogram to determine if your photos have proper exposure?




A good app for showing the histogram all both iOS and Android is called PicsPlay.  Get the free version first.



Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Controlling Light (F-Stops, Shutter Speed, ISO, etc.) (U6-P1) [VID] Sp14

As a photographer, your task is to control light. You are a master of light.

When you turn that dial from "auto" to "manual", you are taking control of the light coming into your camera.  Two key ways of controlling the amount of light coming into your camera are by setting the f-stop and the shutter speed.

For a partial introduction to f-stops and shutter speed, check out the following video excerpt from Brian Ratty's video series (Digital Photography - The Camera (Tutorial DVD)). The videos are now a little dated, but still cover the basics well.




F-stops and shutter speeds are not the only ways you can control light.  You can adjust the ISO settings or use flash, for example.  You can adjust f-stops, shutter speeds, ISO, flash, etc. to get just the right amount of light into your camera -- that perfect exposure.



"Let's Get Techie" does a good job of adding some further details.  Note the exposure triangle.




There are apps that allow you to see the f-stop, shutter speed and ISO settings for your photographs.  If you recall, the f-stop, shutter speed and ISO data and other data (e.g., date, time, GPS location) is what is called EXIF data.  For android devices one EXIF viewer app is Simple Exif Viewer.  For iOS devices an EXIF viewer app is Exif Viewer. A Google search will also show EXIF viewers for laptops and desktops.

Use one of the EXIF viewers and check the f-stop, shutter speed and ISO settings for your photographs. See if the settings or values make sense.  For example, would an ISO setting/value of 800 for an indoor photo make sense?  Why?   Would a shutter speed of 1/2 second for a blurry sports photo make sense?  Why?



Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Exposure and Histograms (U7-P3) Fa13

In the field of statistics, a histogram is "a graphical representation of the distribution of data."  The histogram below shows the distribution of black cherry trees according to height.  Note that there are many trees between 70 and 80 inches tall and a few that are 60-65 inches tall and even fewer that are 85-90 inches tall.

Graphic credit: Mwtoews. Used under Creative Commons

In the field of photography, a histogram is similar, it is a graphical representation of data.  But, what data?
A histogram for a photograph is "a graphical representation of the tonal distribution in a digital image.  It plots the number of pixels for each tonal value."  The tones in a photography range from shadows (the darker areas or pixels) to midtones (grey areas or pixels) to highlights (the white or bright areas of the photograph).
A photograph which is underexposed, for example, would have lots of shadow.

For visuals and further discussion see the videos below.



A key question: How could you use a histogram to determine if your photos have proper exposure?




A good app for showing the histogram all both iOS and Android is called PicsPlay.  Get the free version first.



Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Controlling Light (F-Stops, Shutter Speed, ISO, etc.) (U6-P1) [VID] Fa13

As a photographer, your task is to control light. You are a master of light.

When you turn that dial from "auto" to "manual", you are taking control of the light coming into your camera.  Two key ways of controlling the amount of light coming into your camera are by setting the f-stop and the shutter speed.

For a partial introduction to f-stops and shutter speed, check out the following video excerpt from Brian Ratty's video series (Digital Photography - The Camera (Tutorial DVD)). The videos are now a little dated, but still cover the basics well.



F-stops and shutter speeds are not the only ways you can control light.  You can adjust the ISO settings or use flash, for example.  You can adjust f-stops, shutter speeds, ISO, flash, etc. to get just the right amount of light into your camera -- that perfect exposure.




"Let's Get Techie" does a good job of adding some further details.  Note the exposure triangle.




There are apps that allow you to see the f-stop, shutter speed and ISO settings for your photographs.  If you recall, the f-stop, shutter speed and ISO data and other data (e.g., date, time, GPS location) is what is called EXIF data.  For android devices one EXIF viewer app is Simple Exif Viewer.  For iOS devices an EXIF viewer app is Exif Viewer. A Google search will also show EXIF viewers for laptops and desktops.

Use one of the EXIF viewers and check the f-stop, shutter speed and ISO settings for your photographs. See if the settings or values make sense.  For example, would an ISO setting/value of 800 for an indoor photo make sense?  Why?   Would a shutter speed of 1/2 second for a blurry sports photo make sense?  Why?


Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Controlling Light: What is HDR photography and what is it good for? [VID] Sp13

What does HDR stand for? What is a HDR photo? What type of photography is HDR good for?  What apps (software) are needed?

How To: HDR photography for iPhone and Android (CNETTV)


What is bracketing and what does it have to do with HDR photos?


Secrets of Amazing HDR Photography (revision3)
See the first 5 minutes or so.  Save the remaining for later when we discuss photo editing.


Check out some fine HDR photos at BlametheMonkey.com.  When looking at the photos on this site slide the vertical line back and forth to see the standard version of the photo vs. the HDR version.  What preferences do you have?  Do you like HDR photos?  Pros and cons of HDR?


Quick HDR Landscape Tutorial
Play from 0:00 to 2:15.  Save the remaining for later when we discuss photo editing.


What is spot metering and what does it have to do with HDR photography?


Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Controlling Light (F-Stops, Shutter Speed, ISO, etc.) [VID] Sp13

As a photographer, your task is to control light. You are a master of light.

When you turn that dial from "auto" to "manual", you are taking control of the light coming into your camera.  Two key ways of controlling the amount of light coming into your camera are by setting the f-stop and the shutter speed.

For a partial introduction to f-stops and shutter speed, check out the following video excerpt from Brian Ratty's video series (Digital Photography - The Camera (Tutorial DVD)). The videos are now a little dated, but still cover the basics well.



F-stops and shutter speeds are not the only ways you can control light.  You can adjust the ISO settings or use flash, for example.  You can adjust f-stops, shutter speeds, ISO, flash, etc. to get just the right amount of light into your camera -- that perfect exposure.





Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

DigPhotog: Controlling Light (F-Stops, Shutter Speed, ISO, etc.) [VID]

As a photographer, your task is to control light. You are a master of light.

When you turn that dial from "auto" to "manual", you are taking control of the light coming into your camera.  Two key ways of controlling the amount of light coming into your camera are by setting the f-stop and the shutter speed.

For a partial introduction to f-stops and shutter speed, check out the following video excerpt from Brian Ratty's video series (Digital Photography - The Camera (Tutorial DVD)). The videos are now a little dated, but still cover the basics well.



F-stops and shutter speeds are not the only ways you can control light.  You can adjust the ISO settings or use flash, for example.  You can adjust f-stops, shutter speeds, ISO, flash, etc. to get just the right amount of light into your camera -- that perfect exposure.




Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.