Takes a lot of time to develop the skills to place an image you want to capture. Moving the lens to settle on something has you fighting with having the lens's mirror at a pretty precise 90 degrees from the horizon. If you tip the lens down a fraction, it goes astray.
But it's inexpensive, a frustration to use, fools few when they notice your antics trying to seem to be pointing the lens at something in front of you while rocking the camera body left and right to find your true subject. On Dec 24, 2013, at 21:36 , Stan Halpin wrote: > On Dec 24, 2013, at 9:46 PM, Igor Roshchin wrote: > >> >> Stan, >> A mirror is an optical element, isn't it? >> And the quality of mirrors can range widely. >> >> Igor >> > OK, sorry, When I think optics I think lenses. > The mirror in the 90° add-on I had was not very good. IIRC. You would not be > likely to get a sharp image. > I think 135mm was about the shortest lens you could use without heavy > vignetting. Joseph McAllister [email protected] -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
