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Viewing photos on back of the camera.
Apr 28, 2017 08:26:31   #
paulrph1 Loc: Washington, Utah
 
Nikon D750
On reflection, I was wondering where the source of the image comes from when you view it on the back of the camera. After shooting a photo and you have elected to have it displayed on the back of the camera where does the image come from. Does it read the SD card or is there some memory in the camera that it reads from. And when you push the button to review the image does it read from the card or another source.

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Apr 28, 2017 08:34:04   #
CPR Loc: Nature Coast of Florida
 
The image you see is the jpg version of the image on the card. If you're shooting in jpg that's it, but if you're shooting in raw you still get a jpg version.

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Apr 28, 2017 08:34:44   #
rmalarz Loc: Tempe, Arizona
 
The camera has a built-in program that converts the RAW data to a jpg. That is what is shown on the back of the camera.
--Bob

paulrph1 wrote:
Nikon D750
On reflection, I was wondering where the source of the image comes from when you view it on the back of the camera. After shooting a photo and you have elected to have it displayed on the back of the camera where does the image come from. Does it read the SD card or is there some memory in the camera that it reads from. And when you push the button to review the image does it read from the card or another source.

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Apr 28, 2017 08:36:28   #
brucewells Loc: Central Kentucky
 
paulrph1 wrote:
Nikon D750
On reflection, I was wondering where the source of the image comes from when you view it on the back of the camera. After shooting a photo and you have elected to have it displayed on the back of the camera where does the image come from. Does it read the SD card or is there some memory in the camera that it reads from. And when you push the button to review the image does it read from the card or another source.


When you push the shutter release, the camera captures the scene and writes the appropriate file to the memory card in your camera. Depending upon your selection, it will write a JPG or a raw file (NEF, CR2, etc.) to the card.

When you select the viewer, the camera reads the file for the last image captured and displays it. If the file is a JPG, the camera uses that image to display. If the file is raw, the camera displays a JPG preview stored in the raw file so you can see what the image looks like.

The camera usually provides a method to scroll to the next image on the card for display.

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Apr 29, 2017 07:06:42   #
jerryc41 Loc: Catskill Mts of NY
 
paulrph1 wrote:
Nikon D750
On reflection, I was wondering where the source of the image comes from when you view it on the back of the camera. After shooting a photo and you have elected to have it displayed on the back of the camera where does the image come from. Does it read the SD card or is there some memory in the camera that it reads from. And when you push the button to review the image does it read from the card or another source.


Very good question. I don't feel like getting out of my comfortable chair and resetting my camera to activate the shutter with no SD card inserted, but that would be a good test. Can a camera display an image on the LCD if there is no memory card? If so, that means the image is stored in the camera's memory. I suspect you are seeing the image that has been recorded on the card, just the same as when you review a dozen or more images stored on the card.

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Apr 29, 2017 07:08:15   #
jerryc41 Loc: Catskill Mts of NY
 
brucewells wrote:
When you select the viewer...


And if you don't select the viewer, is the image still coming from the card? I suspect it is, but someone will have to do a test without a card. Volunteers?

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Apr 29, 2017 09:35:08   #
rmalarz Loc: Tempe, Arizona
 
Jerry, I know the D700 can. I've not tried that with the 800, but it probably does too. It's primarily a demo feature. During an in-store demo, the customer can take a photo and see what it will look like. I think there's a setting that disables that function.
--Bob

jerryc41 wrote:
Very good question. I don't feel like getting out of my comfortable chair and resetting my camera to activate the shutter with no SD card inserted, but that would be a good test. Can a camera display an image on the LCD if there is no memory card? If so, that means the image is stored in the camera's memory. I suspect you are seeing the image that has been recorded on the card, just the same as when you review a dozen or more images stored on the card.

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Apr 29, 2017 11:22:08   #
jerryc41 Loc: Catskill Mts of NY
 
rmalarz wrote:
Jerry, I know the D700 can. I've not tried that with the 800, but it probably does too. It's primarily a demo feature. During an in-store demo, the customer can take a photo and see what it will look like. I think there's a setting that disables that function.
--Bob


Thanks.

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Apr 29, 2017 16:30:53   #
RLSeipleSr Loc: North of Boston
 
paulrph1 wrote:
... Does it read the SD card or is there some memory in the camera that it reads from ...


I have an old Kodak Easyshare Max Z990 setting around that I use for quick grab shots of what ever interests me at that moment ... a few years ago the camera stopped reading memory cards, Kodak does not support the camera, so it became a paperweight ... it suddenly came to me that this camera has, a very small, internal memory, only holds about 10 *.jpgs ... !

So, in the case of this particular camera, the image you view on the screen is definately from the camera's memory!

Bob S

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Apr 29, 2017 16:47:05   #
jerryc41 Loc: Catskill Mts of NY
 
RLSeipleSr wrote:
I have an old Kodak Easyshare Max Z990 setting around that I use for quick grab shots of what ever interests me at that moment ... a few years ago the camera stopped reading memory cards, Kodak does not support the camera, so it became a paperweight ... it suddenly came to me that this camera has, a very small, internal memory, only holds about 10 *.jpgs ... !

So, in the case of this particular camera, the image you view on the screen is definately from the camera's memory!

Bob S


Interesting

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