On a K-5..:-
http://dxomark.com/index.php/Lens-with-Camera/All-tested-lenses/Pentax/smc-DA-35mm-F2.4-AL/%28camera%29/676/%28cameraname%29/Pentax-K5
Other test data are also available for the same lens when putting on other Pentax bodies, for example, here is a comparison amongst K-5, K-m and the K20D with the DA35/2.4, actually in descending order for the overall DxO Lens Score, i.e., with the K-m, the combo performs better than with the K20D!
If you want to compare the DA35/2.4 lens to other 35mm focal lenses of other brands on other DSLRs, there is always the DxO comparison tool for the measurbation. Below is an example for K-5+DA35/2.4 Vs Nikon D5000+DX35/1.8G Vs Sony A550+A35/1.4G:-
Happy measurbation and *endless* "comparison"! Good luck! ;-D
Other DA35/2.4 Reviews/Tests:-
http://www.google.com/search?q=DA35+2.4+Tests&btnG=Find&domains=ricehigh.blogspot.com&sitesearch=ricehigh.blogspot.com