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Archive 2008 · D300 + CF Card Capacity Question
  
 
Chaz
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p.1 #1 · D300 + CF Card Capacity Question


What am I missing here?

1. Loaded a new 4GB Lexar UDMA card, formatted in camera.

2. Settings: RAW, Lossless-Compressed (Default,) 12-Bit.

3. LCD on top of camera showed 192.

4. Actual number of pix taken was 325 before showing full.

Why the discrepancy?

Jun 23, 2008 at 11:02 PM
cadman342001
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p.1 #2 · D300 + CF Card Capacity Question


I noticed that last week too mate.

I always have a 4GB card in and it says for example 192 but usually D/L the shots the same day. My Pc has been unplugged this past week so I was up to over 200 shots and it was still telling me I had 50 or so left. (quite a few 14 bit hence less than your 325)

wierd. some discrepancy is inevitable as the file size varies (depending on content of the shot i think) but that's a huge amount - like 70% more shots available than it's reporting.

Anyone else noticed this ?

Andy

Jun 23, 2008 at 11:10 PM
Rodolfo Paiz
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p.1 #3 · D300 + CF Card Capacity Question


Not a discrepancy at all. Any type of compression will give different results on different images: some compress more, some less. So the camera estimates the "shots remaining" in an extremely conservative fashion, as though every shot was going to achieve only minimal compression. That estimate is almost always wrong, and always on the low side. You should expect to see 70%-90% more shots than it promises, e.g. an 8GB card estimates 300 shots but usually delivers 550-600 images.

The theory for doing that is simple: delivering more shots than promised is OK, but delivering less is not!

Edited on Jun 23, 2008 at 11:50 PM


Jun 23, 2008 at 11:49 PM
HerbChong
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p.1 #4 · D300 + CF Card Capacity Question


actually, it assumes no compression. you can verify by turning off compression.

Herb...

Jun 24, 2008 at 12:25 AM
Chaz
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p.1 #5 · D300 + CF Card Capacity Question


Thanks, all - mystery explained and solved!

Jun 24, 2008 at 12:26 AM
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