D800 High Speed Capture: I was recently shooting a horse show in "continuous high speed release mode" (5 FPS) in RAW. When processing the images I noticed that they were sometimes...

Bullfrog Bill Loc: CT

I was recently shooting a horse show in "continuous high speed release mode" (5 FPS) in RAW. When processing the images I noticed that they were sometimes recorded out of order. Often the first and last where correct but those in the middle of the sequence were in a random order. I checked the time stamp for each but since I only see capture time to the second, the shots in each sequence had the same apparent capture time. I suspected that it was due to the large size RAW files and slow buffer but when I tried a few sequences with jpeg I had the same result. Have any other D 800 owners experienced this?

jerryc41 Loc: Catskill Mts of NY

Bullfrog Bill wrote:

I was recently shooting a horse show in "cont... (show quote)

Are you looking at the images on the LCD, or have you imported them? If they are imported, with what program?

Bullfrog Bill Loc: CT

I should have mentioned that the images were recorded on a San Disk 32 GB card and uploaded into LR CC. I tried a second card of the same model to see if that was the problem but I got the same result.

Carl D Loc: Albemarle, NC.

The read/write speed of your card might be to slow. You probably need one the same as the video people use. SDHC 1066x class 10.

Bullfrog Bill Loc: CT

Thanks but it is San Disk Extreme Pro model with 160 MB/s read and 150 MB/s write speed, about the fastest you can get.

Camlane Loc: North Carolina

Check the sort order in Lightroom. Sorted by file name, they should be sequential.

Dngallagher Loc: Wilmington De.

Bullfrog Bill wrote:

Thanks but it is San Disk Extreme Pro model with 160 MB/s read and 150 MB/s write speed, about the fastest you can get.

The maximum write speed of the card is of course dependent on the actual write speed of the device, so if the camera cannot write faster than 90 MB/s any card speed above 90 is locked at 90 MB/s because of the hardware. (I use 90 as an example)

Generally of course the faster the card the better, until you reach the hardware maximum speed.

Good site that provides real speeds based on cards & camera....

http://www.cameramemoryspeed.com/

jerryc41 Loc: Catskill Mts of NY

Bullfrog Bill wrote:

I should have mentioned that the images were recorded on a San Disk 32 GB card and uploaded into LR CC. I tried a second card of the same model to see if that was the problem but I got the same result.

I think it's a limitation of the time recording capability of the camera and the sorting capability of LR. Ordinarily, programs sort images according to the time they were taken. If the camera is shooting at high speed, and the time to the second is the same for each image, LR has nothing to use as a guideline. On the other hand, they should be labeled - numbered - in the order they were taken, like DSC_0123, DSC_0124, DSC_0125, etc.

joehel2 Loc: Cherry Hill, NJ

I'm thinking it has something to do with the writing to the card by the camera cache, the "r" value shown in the top display. When shooting CH, it starts to fill up as you shoot and empties as it writes to the card. It sounds like "write" priority was given to a image taken over images waiting in the cache.

MtnMan Loc: ID

Bullfrog Bill wrote:

I was recently shooting a horse show in "cont... (show quote)

Perhaps images are transferred from the buffer to the card LIFO...Last In First Out. But since the recording and transfer processes happen concurrently you'd always get the first image first, then whatever is last to the buffer when the first image finishes, etc.

But I'd suspect the image numbers and time stamps to be correct and Lightmoom to sort correctly.

Ira

When I initially input images into LR they sometime are not in order, but when they are in the library, they are in order.

Bobbee

Dngallagher wrote:

The maximum write speed of the card is of course dependent on the actual write speed of the device, so if the camera cannot write faster than 90 MB/s any card speed above 90 is locked at 90 MB/s because of the hardware. (I use 90 as an example)

Generally of course the faster the card the better, until you reach the hardware maximum speed.

Good site that provides real speeds based on cards & camera....

http://www.cameramemoryspeed.com/

G,
That is a very interesting site. Thanks. To the OP question, I have a D800 and they showed this.

"The D800 has a large enough buffer to hold about 15 full-size uncompressed 14-bit RAW images."

moonhawk Loc: Land of Enchantment

Ira wrote:

When I initially input images into LR they sometime are not in order, but when they are in the library, they are in order.

Me too--And it's frustrating, because if I'm on a trip I download my pics every night. There's often shots from previous days' shoots on the same card, and they're in mixed up order on the import screen, so it's hard to uncheck the ones I don't want to re-import all in a block. I have "New photos only" checked, but I often end up with multiple copies of the same images.

But, they are all in order once I actually import.

Bull-Dozer Loc: Vermont

Dngallagher wrote:

The maximum write speed of the card is of course dependent on the actual write speed of the device, so if the camera cannot write faster than 90 MB/s any card speed above 90 is locked at 90 MB/s because of the hardware. (I use 90 as an example)

Generally of course the faster the card the better, until you reach the hardware maximum speed.

Good site that provides real speeds based on cards & camera....

http://www.cameramemoryspeed.com/

Very interesting! This probably explains why my Nikon D800's are so much slower than my Canon D5's and Ds5's to upload over a tether. Looking at the same card between the different cameras shows a almost 20% slower Write rate. This would seem to say the computers inside the Nikon D800 has less processor power or a slower clock rate to move the image data to where it is needed.
Looking at the Nikon D810 which is closer in speed (but still slower) would seem to say have a stronger computer.

Bridges Loc: Memphis, Charleston SC, now Nazareth PA

Bullfrog Bill wrote:

I was recently shooting a horse show in "cont... (show quote)

Here is what I think is happening: When you shoot a sequence the light is changing from one frame to the next. If you look at the sequence pay attention to the mbs. I think you will find the lighter shots are larger files. Take a sequence of 7 shots with your D800 with bracket set for the 7 and a 1 stop difference between each shot. You will see a steady increase in your mbs as the shot gets lighter. The processor in the camera is processing all 7 shots at the same time so the darker frames of the 7 will be recorded before the lighter ones. When shooting the horse show there is most likely a change in lighting as the horses move from point a to point b. The frames that are darker will process faster than the lighter ones which could result in the sequence being out of order.