William Robb wrote: > Actually, I don't really do a lot of formal lens testing. Just > go out and take pictures with it.
That's essentially what I did when I got my 6x7 Tak 300mm f/4. I tried lens-test charts a year or two ago with some 35mm lenses; they're a bit fiddly to use and don't tell you much anyway. > If you want to compare it for resolution, contrast, et. al., > photograph some tree branches that are far away and see if they > are resolved equally. This is as good a test as I have ever > found. I took a few frames of a local high school building which turned out to be the perfect subject. It has a small clock tower in the middle, a good contrast test. Red bricks, ivy growing on it, and some carved stonework for checking detail. High-contrast borders around the windows for checking colour fringing at the edges of the frame. The building faces the cricket field which gives me heaps of space for testing long lenses while getting the whole clock tower in-frame. If I ever regain access to my web account I might show a picture of this building. Cheers, - Dave http://www.digistar.com/~dmann/ (out of date) - This message is from the Pentax-Discuss Mail List.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 .
