Based on Popular Photography tests, they are comparably sharp except wide open, where the 31 is definitely better. As P�l mentioned, there are other factors to consider, such as bokeh and overall quality. I have the 31 and am very pleased with it.
BTW, the 31 is actually a 32 while the 35 is really a 34. Joe - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
