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RAW image capacity on different cameras


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When I set my S3 on RAW capture, it indicates a capacity of 38 images

with a 512MB CARD. When I set my D70 for NEF images, it improves to

about 47 images (again, a 512MB card). Assuming about double that

amount with my 1G cards, I'd need a lot of memory to shoot an entire

event in RAW. I've got (3) 1G cards and (2) 512MB cards. That would

offer me a maximum of less than 400 total images.

 

My friend's D2h (which is a 4 meg camera), allows for more than twice

those numbers in NEF mode. What acccounts for the difference? Is

the D2h more "efficient" in some way. If so, how would it be

explained? Any ideas?

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Hmmmm, Whats the difference in megapixels? or, is there a file size difference?

 

The only thing I dont like about RAW is: The work and time involved in "fixing" and touching up the files before printing.. I just did around 180 files from a wedding.. man, it takes forever.. esp. when you have a full time job at 10 hrs. per day. If I had 10 Hrs to do the files it would be different!

-zacker-

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First remember that RAW is just a marketing term used to catch the unwary. The files that people call RAW are NOT really the raw, unprocessed data stream from your sensor but have gone through a certain amount of proprietary, in-camera processing to get them into a readable file format. Header information has to be written for the RAW reader software to draw upon, etc.

 

Part of that processing can include lossless compression in order to increase the number of files that can be saved...of course that adds to the write-times.

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The lastest firmware upgrade on the D70 has NOT increased the number of RAW images you can get on any given card. It has merely improved the accuracy of the predicted number of images that are left.

 

In reality you will still get exactly the same number of RAW shots (assuming the same type of pics) on a 512kb CF card on the D70 with or without the latest firmware upgrade. It is just the number of shots remaining is more accurately predicted with firmare upgrade 2.0.

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Wow, photo.net gets Meryl posts, too "Part of that processing can include lossless compression in order to increase the number of files that can be saved...of course that adds to the write-times"

 

Of course, that's totally untrue. Every current camera that supports raw compression has greatly decreased write times when you turn it on.

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