whappeh
Posts: 1058
Joined: Sun Mar 05, 2006 4:47 am

Soft Lenses?

Tue Mar 04, 2008 8:35 pm

I've been having a conundrum lately with one of my new lenses. I got the 18-200VR at Christmas, and was very happy to pick it up. However, it seems EVERYTHING I shoot with it is soft as soft can be. Far much more so then my 18-70 that was the kit lens I was using before hand. I'm just curious, how can you really tell if its a lens problem, or is the lens naturally soft? If it is a problem with a specific lens, can you do anything about it? Send it to Nikon? Warranty?
-Travel now, journey infinitely.
 
ruudb
Posts: 144
Joined: Sun Jun 05, 2005 4:21 am

RE: Soft Lenses?

Tue Mar 04, 2008 9:37 pm

I think it is typical for these kind of lenses with a long reach, also it has a lot of vignetting, at least the sample I used. To be honest that was a bigger problem to me as being soft.
 
whappeh
Posts: 1058
Joined: Sun Mar 05, 2006 4:47 am

RE: Soft Lenses?

Tue Mar 04, 2008 9:41 pm

I haven't had much vignetting issues, atleast none that stood out worse to me then the overall softness. I'm having to do so much extra sharpening to my photos in post-processing, its damn near making them unusable.
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777MechSys
Posts: 336
Joined: Sun Apr 30, 2006 5:49 am

RE: Soft Lenses?

Tue Mar 04, 2008 11:40 pm



Quoting Whappeh (Thread starter):
how can you really tell if its a lens problem, or is the lens naturally soft?

The first 18-200 lenses are supposed to be good. After that they pretty much suck. I tried it out on two different bodies and noticed the same soft issues.

The 18-70 was a descent lens. I liked it better than the 18-200.
 
whappeh
Posts: 1058
Joined: Sun Mar 05, 2006 4:47 am

RE: Soft Lenses?

Wed Mar 05, 2008 12:01 am

I'm really surprised by the softness... I'm going to have to do some tests in good light tomorrow with some letters and text from fixed positions and find out.
-Travel now, journey infinitely.
 
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JeffM
Posts: 7569
Joined: Sat May 07, 2005 3:32 am

RE: Soft Lenses?

Wed Mar 05, 2008 12:33 am

How do your prints come out? If they are acceptable at around 11x14 or slightly larger, I wouldn't worry unless you primarily display your images on the web. Trying to judge an image on a screen can be futile.
 
whappeh
Posts: 1058
Joined: Sun Mar 05, 2006 4:47 am

RE: Soft Lenses?

Wed Mar 05, 2008 12:57 am

I haven't done any print work since I got the lens, only been working on shooting for anet and other digital medium. I may go make a print and find out, that could be good advice. Thanks.
-Travel now, journey infinitely.
 
preelude
Posts: 16
Joined: Mon Dec 11, 2006 12:00 pm

RE: Soft Lenses?

Fri Mar 07, 2008 10:05 pm

It's a general rule that the more range a lens covers, the poorer the optical performance will be, however there are exceptions. 18-200 = 11.1 zoom. Also if you want sharp images you usually have to step down the lens, typical sweet spot is around f/8 to f/9, at 500mm I have to shoot f/11 with my sigma 170-500. Prime lenses seem to be sharp at all f/stops...
 
whappeh
Posts: 1058
Joined: Sun Mar 05, 2006 4:47 am

RE: Soft Lenses?

Fri Mar 07, 2008 10:21 pm

With my 18-200 I always shoot at F/8 on Aperture priority (unless the situation warrants a change). I may do some jumping around the fstops and trying to find a sharper setting.
-Travel now, journey infinitely.
 
User avatar
Kereru
Posts: 596
Joined: Fri Jun 13, 2003 8:19 am

RE: Soft Lenses?

Sat Mar 08, 2008 5:43 am

Check this out.
http://www.dpreview.com/lensreviews/...8-200_3p5-5p6_vr_afs_n15/page4.asp


I use my 18-200 on mainly walk around or close stuff.

Cheers,

Colin  old 
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