مقایسه با پنتاکس K20D
در شرایط زیر :
Done with raws converted by ViewNX (Nikon) and Pentax Photo Lab (Silkypix)
Lenses where Nikon and Pentax's current 35mm f2.0 primes.
Centre of image crops.
Multiple Pentax images shot to match Nikon image illumination level.
WB = Auto, no in-camera noise reduction used in either case.
Nikon image reduced in saturation by 20%
کد HTML:http://www.pbase.com/andersonrm/pentax_k20d_versus_nikon_d90_at_1600_iso