D 7100 6 shot Raw Buffer IMO D400 still coming

Started Feb 21, 2013 | Discussions thread
teodorian2 Senior Member • Posts: 1,870
Re: So the original poster is wrong?

jfriend00 wrote:

Franglais91 wrote:

You're saying that the original poster is wrong in his assertion that the D7100 will do only 6 uncompressed 14-bit RAW shots before stalling because:

- 6 frames is just the size of the of the buffer, not an actual measurement of the performance

- the D7100 supports a faster card write format so it should be able to flush shots faster (shooting compressed 12-bit will take you further anyway)

OK I can see that. I have never noticed Nikon deliberately limiting the performance of a camera to leave an opportunity to produce a better one

Don't forget that the D7100 images are 50% larger than the D7000 images (24MP vs. 16MP) too so some of the card write speed increase is taken up by the larger images. We'll have to see how this actually works out with a real camera. Actual measured write speed always seems to be different in the real world than what manufacturers proclaim so we will have to see what the actual camera does with a fast card.

I'm guessing a burst of 7-8 before it slows to a stutter speed which averages something around 2-3fps, but this is just a guess based on the specs and how other cameras seem to work.

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The D7100 is actually worse than the D7000:

The D7100 manage only 5 fps in 14 bit raw in DX mode (6 fps i 1.3 x crop mode) vs 6 fps for the D7000.

You need to use 12-bit raw to reach 6 fps in the DX mode and 7 fps i the 1.3x crop mode.

From the D7100 pdf:

Approximate frame advance rate • JPEG and 12-bit NEF (RAW) images recorded with DX (24×16) selected for image area: C L 1 to 6 fps, CH 6 fps • JPEG and 12-bit NEF (RAW) images recorded with 1.3× (18×12) selected for image area: CL 1 to 6 fps, CH 7 fps • 14-bit NEF (RAW) images recorded with DX (24×16) selected for image area: CL 1 to 5 fps, CH 5 fps • 14-bit NEF (RAW) images recorded with 1.3× (18×12) selected for image area: CL 1 to 6 fps, CH 6 fps

In real life testing using the same Sandisk Extreme Pro 95 MB/s 16 GB card I found the D7000 to manage 20 12 bit compressed files before stalling vs 57 for the D800E using the DX mode. I was however shooting at 5 fps since I don´t have a grip for the D800E. The D7100 should be comparable to the D7000.

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