There has been considerable "interest" among the denizens of the DPR 300D forum over the "discovery" that the large and medium Exif JPEG (.JPG) output files, in addition to the main image and the well-known thumbnail image, also contain a third JPEG image at 1536 x 1024 px.
It appears to typically account for about 450 KB of the total file size.
Do we know the purpose of this?
Evidently this is a "feature" of the 300D not paralleling the situation on the 10D.
Best regards,
Doug Kerr
White Balance so easy, even our 5 year old can do it.- Melissa Strickland
Did you see my post on the DPR forum? The embedded JPEG is very much a feature of the 10D. In fact, in the 10D you can choose the size and quality of the JPEG, while in the 300D you have no choice. The purpose is to have a JPEG available immediately, without post-processing. It takes seconds to extract 50 of them from 50 RAW files using the Canon FVU. It serves an excellent purpose, but its usefullness is limited by the lack of choice in size and quality.
Paul
White Balance so easy, even our 5 year old can do it.- Melissa Strickland
Someone's confusing Raw and JPEG here. There is one embedded JPEG (of selectable size( in 10D Raw images. There is a thumbnail and only one full-sized JPEG in 10D JPEG images.
-Noel
White Balance so easy, even our 5 year old can do it.- Melissa Strickland
You wrote:
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Someone's confusing Raw and JPEG here. There is one embedded JPEG (of selectable size( in 10D Raw images. There is a thumbnail and only one full-sized JPEG in 10D JPEG images.
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Yes, and evidently a thumbnail and two "full-sized" JPEG images in a 300D JPG file (at least when the main image size is larger than 1536 x 1024 px), one of them (not the "main" one) of size 1536 x 1024 px).
Best regards,
Doug
White Balance so easy, even our 5 year old can do it.- Melissa Strickland
You wrote:
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Did you see my post on the DPR forum?
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No, I can't bear to read all the traffic in those long threads - they usually go off in so many different directions! Sorry! I usually make it a point to read your stuff.
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The purpose is to have a JPEG available immediately, without post-processing. It takes seconds to extract 50 of them from 50 RAW files using the Canon FVU. It serves an excellent purpose, but its usefullness is limited by the lack of choice in size and quality.
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Good point, and I knew that, but I was asking about the 300D JPG files. I think you are talking about the 300D (and 10D) RAW files.
Best regards,
Doug
White Balance so easy, even our 5 year old can do it.- Melissa Strickland
I was wandering in Staples today and saw the Canon PictBridge printer - 4 X 6 photos right from your picture. This smaller JPEG would give 256 dpi at 4 X 6 -- probably perfect for the PictBridge printer. That is why it is new.
Paul
White Balance so easy, even our 5 year old can do it.- Melissa Strickland
Linear Mode
