Pentax smc DA* 55mm F1.4 SDM
Pentax SMC DA* 55mm f/1.4 SDM review
By: Jon Tarrant, What Digital Camera (Feb 1, 2010)
It seems like a shame that Pentax's 55mm fast prime does not have full-frame coverage, but given that there is currently no full-frame Pentax body (other than older film cameras) this may not be such an important gripe. In isolation this would be a good lens once it has been stopped-down slightly, but amid a field of fast primes its slight weaknesses limit its overall score.