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08/08/2008 03:48:45 AM · #1 |
1. Is it true that nikon dSLR create similarly sized files for all their JPEGs as long as they are set to the same quality and resolution?
2. nikon dSLR does not adjust the "remaining no of photos you can store on the card" based on the different image resolution/quality you select?
read these from Ken the Rocker's website... i'm actually shocked to read about it.
Message edited by author 2008-08-08 03:49:29. |
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08/08/2008 03:56:40 AM · #2 |
Originally posted by crayon:
2. nikon dSLR does not adjust the "remaining no of photos you can store on the card" based on the different image resolution/quality you select?
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Thats wrong, I change my quality all the time and it definitely changes the number remaining before full.
Hey Crayon!
Message edited by author 2008-08-08 03:57:11. |
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08/08/2008 04:01:27 AM · #3 |
Now I'm going to have to recheck, but I don't think that info is correct at all.
Maybe he is talking about older model cameras?
I once was running out of space on my card and switched from RAW to JPEG to save space. The number of shots left immediately changed, as it did when I switched from JPEG large file size + Fine quality, down to JPEG medium + Normal quality. So, I really find it hard to understand what he is saying there. Umm, but definitely will check later.
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08/08/2008 04:15:04 AM · #4 |
The files size (MB) depends on how much information it needs to store. The sizes' will be close to the same for jpgs, within a few 100kb from my experience (which is not much, since I shoot RAW), but the RAW images vary in size also.
Take any camera and shoot an all white background, then shoot an all black background, now shoot just a plain ol shot of something. They will all be different sizes coming outta the camera when all left at the same settings in camera.
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08/08/2008 04:29:43 AM · #5 |
Nikon cameras will change the remaining number of shots based on the current settings. They are an estimate since it is impossible to know the exact size of an image before the fact, the more details and differences inside the image the larger it becomes. In regards to JPEGs anyway.
When a JPEG is saved usually you are given a quality option, from 1 to 100 usually depending on your software. The higher the quality the larger the JPEG. Different brands of cameras save JPEGs at different quality settings, typically called things like Fine, Superfine, and Standard.
I believe what Ken was saying is that in previous models of Nikon's the camera would vary the quality, between say 60 and 90 depending on the size, so that that each JPEG would be the same general size. This is a bad thing, it means your detailed shots turn blurry and lose those details.
Of course this is moot when shooting in RAW mode.
Recently Nikon has given the option to always save at the same quality setting, resulting in varying image sizes. This makes it harder for the camera to estimate how many frames remain and might slow other calculations, however it should result in a better quality image.
If in doubt, NEF for the win. :)
Hope this isn't too late, and hope it is helpful. |
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08/08/2008 04:35:33 AM · #6 |
Originally posted by salmiakki:
Now I'm going to have to recheck, but I don't think that info is correct at all.
Maybe he is talking about older model cameras? |
i'm also almost sure the rocker man is wrong when i read it! it's absurd! and he was referring to it on his D80...geesh
ps: hi Joe! :D
Message edited by author 2008-08-08 04:36:03. |
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08/08/2008 06:02:27 AM · #7 |
I don't have either camera or manual with me now, but I think there's an option (D200) for constant file size. I don't suppose a whole lot of people use that option. When I take pictures I often notice that the number of pictures left on the card as indicated on the camera does not always decrease by the same number of pictures that I've taken. Which is explained by variations in file size, as above, I guess.
ETA an option for only posting one post at a time might be interesting...
Message edited by author 2008-08-08 06:03:14. |
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08/08/2008 06:18:48 AM · #8 |
Originally posted by raish:
ETA an option for only posting one post at a time might be interesting... |
yea, like "please wait 5 seconds before your next post" :)
i made that mistake sometimes too from double-clicking |
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08/08/2008 06:41:05 AM · #9 |
What some Nikons did and sometimes still do is base the remaining amount of shots on the card, on the maximum possible jpeg file size. So if you have a Gig of memory, the max size for the resolution you are shooting at is 1mb and you already filled 500mb, the camera will tell you that you can put another 500 on the card.
But if the average of the remaining files is (exaggerated) 500kb, 1000 will fit. But the camera doesnt tell you that, it only adjust the remaining shots once there is another free mb on the card.
At least it was like this on the D70 until a firmware upgrade, from which it started to work with average size estimations.
Has nothing to do with actual file sizes.
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08/08/2008 06:46:41 AM · #10 |
sounds like another one of Ken's awesome claims... he seems to be getting wackier every time I read his page. Last article I read I think he was comparing the D3, 5d and 1dsmk3 so he enlarged every file to the 21mp size of the 1ds then said "the canon is still the sharpest"... surprised that a 10mp camera doesn't hold as much detail when you blow it up 100%?
I would take everything he says with a trailer full of salt. |
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