 Matthew Cannedy |
Is there something wrong with my lens? Hi. I decided that I would fork up the big bucks to buy what is supposed to be an excellent lens- Nikon 28-70 2.8D AF-S ED-IF. I hoped that this heavyweight would be a great addition to my Nikon lens collection. However, I'm very disappointed with the results of the first 800 or so pictures. My problem- sharpness. Very few pictures I've taken have any sharpness. I have the much smaller less expensive 28-105 3.5-4.5D which takes much sharper images. I have tried both manual and AF operation, various ISO's,lighting conditions, subjects,etc...Nothing I do seems to help. I've spent a lot of time (unscientifically) experiementing with which f stop gives the best sharpness (about f5)but none match any of my other lenses. I have no problems with any other of my lenses. I know zooms aren't in general as sharp as primes, but I hoped this lens would at least outperform many of my other less expensive zooms. The only improvement seems to be that it transmits colors beautifully! Was this lens developed for some special purpose that I'm unaware of? Is this normal? I've read many reviews of people who swear by this lens. I use a Nikon D1X. Anyone have any suggestions on how to improve? Anyone had a similar problem with this lens? Any help appreciated! Thanks -Matt
|
|
|
|
||
|
Justin G. |
Matthew, I personally know nothing on Nikon but when buying lenses, there are possibilities to get "bad" copies. Maybe if your photoshop will allow you to return it and try again with another copy. I've read where people sometimes buy 3-4 copies before they get a "good" copy they like. just an idea.
|
|
|
|
||
|
Mark Feldstein |
Greetings Matt: While you may already be aware of this, sharpness is a result of numerous factors. These include the proper position of the film to the film plane, (excludes D-SLRs of course), the camera speed and whether it's appropriate with respect to the weight of the lens you're using; the optical qualities; the vision of the user; whether the auto-focus is working properly; and with slrs, whether the mirror is properly aligned; whether the camera is properly supported to prevent camera shake; and the resolution of your prints; among other factors. With film cameras, to check focus, always check the negatives for sharpness first. Apparently, some of your photos are turning out sharp. That can be a telling factor in all this, especially if those shots were made, for example at infinity and higher shutter speeds, say over 1/125. And, btw, every lens has a "sweet spot" like a golf ball. Yours sounds like it's f 5.0, whereas many of my Nikkor AI lenses are either at F8.0 or f11. But you should still get sharp images. So, what I'd do is first get the camera checked with both lenses you noted. If you only note this problem with the new lens. Although it could be operator error, vision and/or camera shake at slow shutter speeds, it may well be a problem with the lens itself (especially since you said it was soft in both manual and auto modes). This ought to help you narrow it down and get it checked while it's still under warranty. Take it light.
|
|
|
|
||
|
Craig m. Zacarelli |
you caan do a google search for lens test or focus test..something of that nature... print it out and test away! it sounds like its just a bad copy that might need to be recalibrated. -zacker-
|
|
|
|
||
|
This old forum is now archived. Use improved Forum here
Report this Thread |
||