My experience with several M series 50mm lenses is that the 1.7 is usually slightly sharper and crisper at working apertures (f5.6-f16), the 1.4 is sightly sharper at wider aperatures and of course is slightly easier to focus in low light. However, the best of one (1.7 or 1.4) is better than the average of the others. In other words the difference is so slight that manufacturing tolerance causes them to overlap each other. The 1.7 I currently have is one of the best I have ever used (subjective opinion based on real world images, not tests). I had a 1.4 that was next to useless wide open, and I had one that was simply supurb, though not quite as good as the current 1.7.
So, the anwser is it depends on the particular lens, a general statement is not valid. Ciao, Graywolf http://pages.prodigy.net/graywolfphoto ----- Original Message ----- From: "Steve Pearson" <[EMAIL PROTECTED]> To: "Pentax Mail List" <[EMAIL PROTECTED]> Sent: Tuesday, December 31, 2002 11:58 PM Subject: A or M 1.7 Vs. 1.4? > Hi again, > I own the 50mm-A 1.7 lens. Seems that most think the > 1.4 is a better lens? Do you agree? Has anyone ever > done a side by side comparison? > > I would like to pick up a 1.4, and also wonder if > there is much difference between the A version Vs. the > M version. This would be in the K mount, for a Super > Program, MX, etc. > > Thanks for your suggestions. > > __________________________________________________ > Do you Yahoo!? > Yahoo! Mail Plus - Powerful. Affordable. Sign up now. > http://mailplus.yahoo.com >
