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|| SportsShooter.com: Member Message Board
IMages reading to CF card...
Debra L Rothenberg, Photographer
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New York | NY | USA | Posted: 11:22 PM on 03.16.10 |
| ->> will images read to the card at a faster speed if you are only using one of the 2 card slots as opposed to one card for RAW, the other for Jpeg? |
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Eric Canha, Photographer
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Brockton | MA | United States | Posted: 12:28 AM on 03.17.10 |
->> Deb are asking about reading previews from the cards or writing the files to the cards?
I am sure that there is a slight overhead in CPU cycles to access both slots but that would be so tiny as to (I would assume)be unnoticeable. Personally I choose to write the jpg and raw to the same card because PM renames the files on ingest with the same file name and # at the front end. Just makes it easier (I think) in my work flow.
As for reading previews to the camera's LCD I would assume that reading a preview from a raw file would be faster. My assumption is based on the fact that the raw file contains an embedded thumbnail. So when you preview a raw file it's the thumbnail that is displayed and the camera does not have to open a 4mb jpg and scale it for the display on the camera. Again we're only talking a handful of clock cycles so I would doubt that you would actually notice a difference in real world situations. |
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Debra L Rothenberg, Photographer
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New York | NY | USA | Posted: 2:20 AM on 03.17.10 |
->> Eric-sometimes when I press the shutter it won't let me fire off a photo since an image is still reading to the card. I was just wondering if I only used one slot and just shot Raw instead of Raw AND Jpeg if this wouldn't happen.
It doesn't seem to be an issue with the D3s but more so with the other cameras |
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George Bridges, Photographer, Photo Editor
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Washington | DC | USA | Posted: 11:44 AM on 03.17.10 |
->> Debra,
Are both the cards the same speed, size etc?
If you have a 300x CF card in one slot and a 80x in the other slot then you will see disruptions in being able to shoot because one card will not be writing as fast as the other.
I know at times I've changed out one card and not done the second which I'm writing to as a backup. Forgetting about it the second card fills up even though the first one still has gigs and gigs of space left and the camera stops shooting.
All things being equal the RAW will take a little longer to write and shooting RAW+JPEG at the same time will eat through your buffer quicker and can cause slowdowns if you hit the buffer limit or one card is nearing capacity. |
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Eric Canha, Photographer
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Brockton | MA | United States | Posted: 12:33 PM on 03.17.10 |
->> Deb I shoot RAW+JPG to one card at a time and don't normally hit the buffer. It sounds like you may be hitting the buffer limit and that is what is keeping you from shooting the next frame. There is one other possibility. You could have one faulty slot that is writing slower than the other. I had a D2Xs that had a toasted CF slot. It would take forever to write a file to the card and as a result I wouldn't be able to shoot, not because of a buffer issue per se, but because the camera was writing the files at the rate of 1 every 8 seconds. If I pressed on the card or the card door things would fly along. Had this happen twice. Second time I wedged a pieced of tape between the door and card and got through the day. NPS replaced the card cage.
Try this.... Put a card in slot 1 and shoot a burst of TIFFs then move the card to slot two and repeat. Write times should be the same or REAL close.... if one of the slots is much slower than the other you have issues with the body.
For what it's worth I just put a card in each slot and set the camera to write a jpg to one and RAW to the other and fired off 2 16 exposure bursts with no lag or issues... |
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