[pics] SD10 vs. 20d sample

Started Feb 21, 2005 | Discussions thread
Juri D Regular Member • Posts: 428
Canon 20D vs Sigma SD10: Resolution analysis

Thank you dr.noise for your excellent side-by-side comparison. I took a slightly different approach to comparisng those two images.

First, I resized both to be 13.5MP with Bicubic smoother [any printer would do a similar thing, i.e. resizing to its native resolution, usually 600-720dpi for inkjet, something else for dye] in 16-bit. Then I tried to make detail visible as much as possible without introducing too much of sharpening artefacts. Sharpening was not excessive, around 0.5 radius for 20D and 0.8 for SD10. [SD10 took more sharpening because it was resized more].

The reslults are presented below. 20D seems to show quite a bit more detail than SD10, although, of course, the difference is less than the ratio 8.2/3.4 would suggest. The extra detail is visible especially in cloth in Picture 1, inscription on the watch, label in Pic. 2. What surprised me, however, was color shift in SD 10: see the upper part of watch meeting the belt, for example, and in other edges of the metal ring on the watch face.

CANON pic.1

SIGMA pic.1

CANON pic.2

SIGMA pic.2

CANON pic.3

SIGMA pic.3

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