| Joined: | Mon Apr 2nd, 2012 |
| Location: | Carthew, Cornwall, United Kingdom |
| Posts: | 6874 |
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Perhaps stating the obvious but zooms are renowned for more variability. I tried three 17-35 f2.8 (£1500 lenses) before getting one that was the same quality across its range. And that was only a 2x zoom! The infamous 18-200mm DX lens suffered at one end or the other. Mine was soft at 200mm ...other people said theirs was soft at 18mm. What I learnt was ....
1) You have to try the lens you intend to buy to ensure THAT lens is good.
2) Avoid zooms with more than 4/5 x range, the risk of variable quality appears to increase with zoom range
That said, the 28-70 range should be sufficiently far away from wide angle to avoid edge exposure drop off and distortion. And if you intend to use it on a DX camera you will be using the centre of the lens which is invariably the best.
But taking Jonathan's point, trying to get AFS lenses is a better strategy. Changing your camera to a more modern model will make a significant improvement to your photos ....add AFS lenses and the camera will feel more responsive, even though the IQ of AFD lenses may be just as good.
Agree with Eric.
You need to try before you buy which isnt possible if you cant find it locally or it is on eBay.
My reason to move to AFS for any new lenses is because. I love my 85 f1.4 but it is only AFD.
Yes I know there is now an AFS version but it is very expensive and I already have the AFD version which is very good.
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Still learning after all these years!
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