When you say "the review of the supplied lens is poor", that refers to the review and not to the lens about which you say nothing.I always find it difficult to compare "make a guess" with something else...
Ok,Forget the review part of the question..
If I take a photograph and print it out using the standard lens issued with the D400 and then take another photograph using the Sigma 18-200mm dc os lens using the same settings and print it out will there be any noticeable diffrence to the naked eye between the 2 photographs..
You may be able to see the difference, there are just too many variables to say yes or no. I would say probably not, although Sigma's lenses tend to have better contrast than the 18-55 kit lens..
You will see a lot of poor reviews of the 18-55 kit, but it can take good pictures. Sure there are better lenses out there, but don't give up on the kit lens until you've tried it! Unless of course you can replace it with L glass..
Crime Scene PhotographyA small gallery of personal work: http://picasaweb.google.com/PID885..
Maybe a stupid question - but what do you mean by L glass, a lens filter to increase the contrast of the kit lens?..
'L glass' means the expensive and very good Canon L-series lenses - the white ones that you see pros using....
The Canon 18-55 standard lens does have a fairly poor reputation; look at the review onhttp://www.photozone.de. But the image quality (as with all zooms) varies with f-stop and focal length. At f/8 and away from the extremes it is OK. So you can't say that it will always produce a worse image than another lens: at it's best it will outperform another lens at it's worst. Whether the difference is apparent in a print will depend on the size of the print. For 4x6 prints for the family album, almost certainly not.
If you are serious about image quality and want to be able to get sharp, big prints then a better lens than the Canon 18-55 is advisable - obvious possibilities are the Tamron 18-50 and the Sigma 17-70, as well as some of the better Canon lenses. If your requirements for image quality are not critical (i.e. smallish prints) a lens like the Tamron 18-250 could be a good versatile solution..
Many thanks for your help. Its given me something to think about !.
I mentioned the sigma dc os 18-200mm as my line of thinking was I could fit & forget it..
By that I mean it would be an all rounder...I do a lot of Fell walking (English Lake District) & I wanted a lens that would give me the widest possible scope for my money. I specifically wanted to avoid buying several diffrent lens (mainly due to cost).
Although I am aware that a general purpose lens can never match the well known brands made to cover a specific area.l..
Re>If I take a photograph and print it out using the standard lens issued with the D400 and then take another photograph using the Sigma 18-200mm dc os lens using the same settings and print it out will there be any noticeable diffrence to the naked eye between the 2 photographs<.
No difference, as long as the shutter speed chosen for the kit lens shot is fast enough to avoid camera shake. The Sigma has image stabilization that allows it to be used at a lower shutter speed and still yield a sharp photo..
But in general, there will be no difference..
The big advantage of the Sigma is the wide range of focal lengths..