Canon D60 Nov. 2002 [Canon D60] [My photo gears] [Back to Photo Page]

Image Quality vs Resolution (continued from main D60 page)

• Original images (cropped from the image on the top) from cameras and scanner at native resolution (no post processing)

G2 ISO 100 (2274x1704)	D60 ISO 100 (3072x2048)	Provia 100F scanned by Nikon Coolscan4000 @ 4000dpi (5071x3444)

• Upsample G2 and D60 images (using bi-cubic in Photoshop) to the same size of scanned image.

G2 ISO 100	D60 ISO 100	Provia 100F

• Upsample images and apply unsharp mask (amount 80%, radius 3 pixels, threshold 3 levels) to all images.

G2 ISO 100	D60 ISO 100	Provia 100F

• Downsample images to the same resolution of G2 image (without any unsharp mask).

G2 ISO 100	D60 ISO 100	Provia 100F

• Downsample images to the same resolution of G2 image and apply unsharp mask (amount 80%, radius 2 pixels, threshold 3 levels).

G2 ISO 100	D60 ISO 100	Provia 100F

Suprisingly, Provia100F scanned by Nikon 4000 (14-bit @ 4000dpi with auto-focus, which I have been using for years) is the worst in my opinion (even worse than G2). The original slide was perfect sharp under 4x loupe on my light table (and I took all pictures based on my usual practice: tripod, mirror lock-up, and self-timer). More pixels provided by scanner do not necessarily have more information. I know it is hard to make conclusion just based on one image comparison. It may be the scanner was out of focus a bit for this scan. G2 has too much artifact when the unsharp mask is applied, which means G2 must have already done enough post-processing (sharpening) in camera. D60 is the clear winner in this comparison, and I am happy now.

Here is 2nd image comparison between D60 and scanned Provia100F.

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