D4s has smaller RAW buffer than D4??

Started Mar 25, 2014 | Discussions thread
OP jjnik Senior Member • Posts: 1,319
Re: D4s has smaller RAW buffer than D4??

Robin Casady wrote:

jjnik wrote:

Just tested my new D4s next to the old D4 that a friend is buying. Interestingly, with identical settings (all fps robbing items such as NR, ADL, vignette control and lens auto distortion correction set to OFF), the D4 will fire off ~87 14 bit lossless compressed RAW files, but the D4s will only fire off ~61! This is using the 168MB/s Sony S series XQD card. Anyone else notice this? A little disappointing to take a step back in performance (not that I'd normally fire an 87 frame burst, but still?)

RAW files will vary in size, depending on the image. To test this properly, mount a lens with a foot onto a tripod. Set it to manual focus and make sure you don't move the tripod when switching cameras.

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Robin Casady
"Get your facts first, then you can distort them as you please."
—Mark Twain

I shot them handheld at short distance centered on exactly the same targets - the results between the two were 100% repeatable on different passes.  The D4s always filled up way sooner than the D4s.

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