Since DxOmark added the 5DII to their rankings I updated the list I made earlier.

Something has been bothering me about DxO Mark rankings and Michaels review of the A900 made me think that a fourth factor, resolution is missing from these ratings. Resolution counts, for a given size print the more resolution the more realistic the fine detail, i.e. foliage, hair etc. Perceived detail is a function of the pixels in each dimension or the square root of the pixel count. So I took DxO mark rankings and used it for 3/4 of the weighting and added 1/4 of the square root of the resolution and re-ranked the top 9 cameras. The formula I used was ((DxO Mark x 3) + (20 x sqrt(mpixel count)) / 4

10 mpx = 63.2, 12 mpx = 69.2, 13mpx = 72, 15 mpx = 77.4, 17mpx = 82.4, 21 mpx = 91.6, 24mpx = 98

Rankings with resolution as a factor:

- A900 = 83.675
- 1DsIII = 83.125
- 5DII = 82.15
- D3 = 77.75
- D700 = 77.675
- 1DsII = 76.1
- D90 = 71.75
- 5D = 71.175
- Gx20 = 70.875
- 1DIII = 69.05

A ranking closer to what photographers are seeing! check my math too!

I also took the ranking weighted by resolution and divided by retail price to get a value rating:

- GX20 669
- D90 581
- 5D 356
- 5DII 304
- D700 288
- A900 278
- D3 181
- 1DIII 170
- 1DsIII 109
- 1DsII 170

Marc