Just Checking...corner performance 17-35/28-70 vs. 17-55

Discussion in 'Lens Lust' started by AFS, Jul 4, 2005.

  1. I'm pretty much decided on the 17-35/28-70 over a 17-55 DX for a few reasons, but I wanted to check something.
    On a DSLR, due to the cropping out of the corners by the smaller sensor, do the 17-35 and 28-70 have superior corner performance over the 17-55 DX due to its being designed for the smaller sensor?
    I'm already worried about the 17-55 due to the focus problems i've heard about lately. I also prefer teh looks and feel of the 17-35 and 28-70.
  2. nfoto

    nfoto Guest

    Why would you think a 17-35, designed to cover 24x36 format, would perform better in the corners of the DX frame? It is in fact the other way around, the 17-55 *because* of its DX construction, implying it is telecentric, is equal or better.

    I have all three (17-35, 17-55, 28-70) and cannot really see any practical difference between them in the way they handle and "feel". It is true that the workmanship of the 17-35 is superior to the two other lenses, numerals being engraved not printed for example, but this won't show up in the pictures. Also a fact to consider is that the 17-35, belonging to first generation of AFS lenses, does have a tendency to develop a squaking focusing motor, which is costly to repair. It also has a sunshade which is ineffective when the lens is used on a DX DSLR. It flares however much less than the 17-55, that is, as long as it is clean inside (mine isn't anymore).

    All three of them are professional lenses able to withstand heavy use including the occasional involuntary drop onto concrete and suchlike substrates.
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