Camera RAW plug-in and file sizes

GB
Posted By
Gary_Bryant
Apr 18, 2004
Views
496
Replies
8
Status
Closed
I have the 2.1 plug-in installed with CS and can read my Fuji S7000 files but the default size that the plugin reads is 2848×2139. The manual states that the file size is 4048×3040 and if I convert the file to tiff with RAW File converter LE software (that comes with the camera) that also creates a file 4048×3040.

What is the correct size that the camera is creating? And if I change the size in the plugin dialog box to the larger file size is photoshop resampling the image?

Regards

Gary
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Colin_Walls
Apr 18, 2004
Since this camera has a 6.3mpx CCD, that is its "native" resolution. So the answer is 2848×2139. Anything bigger is being upsampled [somewhere along the line]. The point behind using RAW formats is to get the data the camera captured, without it being messed with.
GB
Gary_Bryant
Apr 18, 2004
Is there any software out there that can read raw files to check the exif data etc?
GB
Gary_Bryant
Apr 18, 2004
I’ve now found a viewer that reads raw files and provides the exif data. This shows the file as 4048×3040, so I don’t know what Photoshop is doing as browser shows it as 2848×2139.

I’ve asked Fuji for some info as well.

Thanks
CW
Colin_Walls
Apr 18, 2004
I think 4048×3040 is upsampled. Fuji misleadingly describe this camera as being something like 12mpx, but then say it has a 6.3mpx CCD …
CC
Chris_Cox
Apr 18, 2004
Gary – the camera sensor is only 2848×2139. Photoshop shows you what you’ve got, and lets you decide if you want to upsample or not.
F
fotografica
May 16, 2004
Can you please clarify this for me. When I open a Raw file and select a file size larger than the camera’s resolution, do I lose quality?
J
Jim
May 16, 2004
OK, here goes…

A given camera records a scene at 2000 x 3000 pixels.

If you print the result file to a 20×30 piece of paper, you will lose quality because because the resulting image can only be printed at 100 pixels per inch.

If, however, you print the resulting file to an 8 x12 piece of paper, you will not lose quality because the resulting image will be printed at about 240 pixels per inch. It is very difficult to see any difference between 240 pixels per inch and 300 pixels per inch.

If you decide to increase the file size, and this can only be done by increasing the number of pixels, there is a potential for a decrease in picture quality. I say potential because the end result depends on whose method you use and how many pixels must be added.

Jim
wrote in message
Can you please clarify this for me. When I open a Raw file and select a
file size larger than the camera’s resolution, do I lose quality?
MM
Mac_McDougald
May 16, 2004
Never mind (I didn’t read whole thread, my follow didn’t help).

M

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