CFExpress benefit?
Apr 2, 2023 18:18:04 #
larryepage
Loc: North Texas area
ricardo00 wrote:
Haven't seen any subsequent posts by the OP, but isn't clear to me what the problem is that they are having. I shot RAW with the D500 at 10fps with my Sony XQD cards and had no problems.
It depends on how you have your camera set up. If you are capturing with reduced resolution or greater compression, files are smaller, so the camera's buffer is deeper. And the buffer saves to the cards faster. So there's not necessarily just one answer.
Apr 2, 2023 18:25:23 #
Apr 2, 2023 18:53:17 #
larryepage wrote:
It depends on how you have your camera set up. If you are capturing with reduced resolution or greater compression, files are smaller, so the camera's buffer is deeper. And the buffer saves to the cards faster. So there's not necessarily just one answer.
I am shooting lossless RAW, so not reduced resolution or compressed. The files are full size. But would agree, if you shoot smaller JPG, the buffer is going to hold more pics. But when shooting RAW files (as I stated), I had no problem shooting for several seconds, 10 fps. As shown in the accompanying article, one can shoot for 20 sec at 10 fps lossless RAW with the D500:
https://photographylife.com/nikon-dslr-buffer-capacity-comparison
So the question to me, is what is the problem that the OP is having? Are they trying to shoot longer than 20 sec? If not, maybe the card is not the problem.
Apr 3, 2023 03:48:42 #
Thank you all for your responses. To clarify, the slow down occurs after a first burst of about 5-10 frames. I stop, wait perhaps 10 seconds and on this next series after just a few frames it comes to a crawl. If I wait perhaps 30 seconds I can start up again and get 5-10 frames without issue. A response from ricardo00 asked about writing to a second slower SD card. I do also write to a fast SD card at the same time - I should have considered this - perhaps simply removing that card would help.
Apr 3, 2023 05:14:09 #
grahamfourth wrote:
I have a Sony XQD camera card for my Nikon D500 for BIF imaging but the camera still slows down during rapid acquisition- will a CFExpress B card improve image acquisition speed for my D500 or is the limitation elsewhere?
Thanks in advance!
Thanks in advance!
If you are writing to two cards you have to wait until the slower is written to. Perhaps the camera writes at that speed even if the second card is inactive.
Apr 3, 2023 06:39:19 #
larryepage
Loc: North Texas area
grahamfourth wrote:
Thank you all for your responses. To clarify, the... (show quote)
Are you writing raw files to both cards? That would definitely put a hard block on the speed of the process. I write Fine/Large JPEGs to my second card. There is no slowdown as the one
you describe.
On a separate issue, what and how are you photographing? Long shutter times will definitely slow the entire process as well.
Apr 3, 2023 07:44:43 #
tcthome
Loc: NJ
therwol wrote:
When the D850 and D500 were released, they could not use CFExpress cards. The manuals that came with the cameras did not mention these cards. Both received a firmware update that allowed CFExpress cards to be used in the QXD slot. I doubt if either camera can fully take advantage of the additional speed of the newer cards, however they are a bit cheaper than QXD cards and becoming more universal.
Call Nikon.
Apr 3, 2023 08:40:46 #
I take mostly BIF and write both as RAW and Fine jpeg - perhaps this is too much to expect and I will be better removing the SD card or loosening the jpeg quality.
Apr 3, 2023 11:01:18 #
larryepage
Loc: North Texas area
grahamfourth wrote:
I take mostly BIF and write both as RAW and Fine jpeg - perhaps this is too much to expect and I will be better removing the SD card or loosening the jpeg quality.
Got it. I believe it's well worth doing a test with a lower-tier JPEG setting (depending on what you do with them). At the least it should be easy to see if that's the problem. You could also set both images to go to your XQD card and use the SD card just for overflow. That might not have as much benefit, but it's worth a try and costs nothing.
Apr 3, 2023 12:35:20 #
btbg wrote:
You will see some improvement in speed. I don't know if that improvement is enough to fork over the cost of new CFExpress cards or not. You will have to make that decision on your own. I have a D500 and it takes a little longer before it buffers with a CFExpress card than it does with an XQD card.
How many shots are yoy taking? I shoot 10 often and have never hit the buffer.
Apr 3, 2023 12:48:44 #
Oops saw already the same suggestion above, put the second card as over flow and not backup. Or remove it and see if your problems are solved.
Apr 3, 2023 21:17:18 #
larryepage
Loc: North Texas area
One question we should have asked earlier...when your camera is slowed down, is the green "Busy light" illuminated? I think we probably all presumed that it was, but could you verify for sure? I'm especially interested in knowing about this when the camera starts up slowly after some time has passed.
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