Came across this on another site. http://fwd.five.tv/videos/challenge-blow-up-part-3. It depicts an interesting comparison, but raises a question for me about my lack of knowledge about image sensors and their role in final product quality.
The Nikon model used in this comparison had a 12 MP sensor whose dimensions were very similar to 35mm. Yet Nikon has a model that costs much less that also has a 12 MP sensor, but I couldn't find the dimensions of the sensor for that one.
Since both have the same number of pixels, but assuming one was physically smaller, what role would that play in the quality of the final image and any subsequent enlargements?
My Canon G9 has a sensor 7.6 X 5.7 mm in size. I have to say that I am pretty amazed at the quality this little camera is capable of in a print sizek up to about 11X15".
Sandy King
Originally Posted by bobwysiwyg
Came across this on another site. http://fwd.five.tv/videos/challenge-blow-up-part-3. It depicts an interesting comparison, but raises a question for me about my lack of knowledge about image sensors and their role in final product quality.
The Nikon model used in this comparison had a 12 MP sensor whose dimensions were very similar to 35mm. Yet Nikon has a model that costs much less that also has a 12 MP sensor, but I couldn't find the dimensions of the sensor for that one.
Since both have the same number of pixels, but assuming one was physically smaller, what role would that play in the quality of the final image and any subsequent enlargements?
Sandy - The G9 is a remarkable "little camera" with some amazing capabilities. The Canon G9 is used to record the LensWork darkroom tour and interview sessions in the LensWork extended publication. So not only does it make nice still images it's a heck of a video recorder too.
It is quite a remarkable camera. And the ability to shoot RAW, as well as bracket automatically exposures for HDR photography should also be mentioned as very positive features.
Sandy King
Originally Posted by Joe Lipka
Sandy - The G9 is a remarkable "little camera" with some amazing capabilities. The Canon G9 is used to record the LensWork darkroom tour and interview sessions in the LensWork extended publication. So not only does it make nice still images it's a heck of a video recorder too.
...bracket automatically exposures for HDR photography...
Yes that's a neat feature. They added this feature to A700's last firmware update (3 frames, -2, 0, +2 or 0, -2, +2). It's very welcomed! In normal shooting I never feel the need of HDR, since A700 does very good in selectively lightening the shadows with its Dynamic Range Optimization feature (it does wonders!), but I plan to do some HDR photography "exploiting" the technique...
Attached is a shot I made with the Canon G9 last winter in Oaxaca, Mexico. The contrast range of this scene was very great and it could not have been made in digital without use of HDR.
Sandy
Originally Posted by Loris Medici
Yes that's a neat feature. They added this feature to A700's last firmware update (3 frames, -2, 0, +2 or 0, -2, +2). It's very welcomed! In normal shooting I never feel the need of HDR, since A700 does very good in selectively lightening the shadows with its Dynamic Range Optimization feature (it does wonders!), but I plan to do some HDR photography "exploiting" the technique...
Yes probably so, but that's not a "normal shooting" situation for sure Maybe I could do it (if I were there) with the DRO feature in A700 by overexposing the highlights by 1 stop (and recover in RAW processor) and using the DRO adjustment at maximum (Level 5) but that would cause pretty much noise / processing artifacts in the shadows. What was the SBR of the scene? (A700 does something like 9 stops, something more if you don't mind clipping in one channel, see: http://www.dpreview.com/reviews/sonydslra700/page19.asp for DRO and dynamic range info...)
The SBR of the scene was way more than 8 stops. I had a 5X7 camera with me at the time and made a B&W negative of the same scene. From my notes I exposed and developed for an SBR of 13. It may have been higher than that but I just never record anything larger than SBR 13.
Sandy
Originally Posted by Loris Medici
Sandy hi,
Yes probably so, but that's not a "normal shooting" situation for sure Maybe I could do it (if I were there) with the DRO feature in A700 by overexposing the highlights by 1 stop (and recover in RAW processor) and using the DRO adjustment at maximum (Level 5) but that would cause pretty much noise / processing artifacts in the shadows. What was the SBR of the scene? (A700 does something like 9 stops, something more if you don't mind clipping in one channel, see: http://www.dpreview.com/reviews/sonydslra700/page19.asp for DRO and dynamic range info...)
This comparison is flawed in several ways. First of all it uses ISO 400 film, which everybody knows never have been very good in 35mm format. (If they used, say the new Ektar 100 my guess is that film would come out with more detail than digital from the D700). Also, they don't say how they scanned the negative - and scanning makes the comparison unfair anyway. A true comparison would show an analogue enlargement from film vs digital print from digital.
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Originally Posted by bobwysiwyg 
Maybe I could do it (if I were there) with the DRO feature in A700 by overexposing the highlights by 1 stop (and recover in RAW processor) and using the DRO adjustment at maximum (Level 5) but that would cause pretty much noise / processing artifacts in the shadows. What was the SBR of the scene? (A700 does something like 9 stops, something more if you don't mind clipping in one channel, see: 
