Tamron XRDi lens problem with Canon 350D

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Andy - 27 Mar 2006 22:29 GMT

I recently bought a Tamron "SP AF28-75mm F/2.8 XRDi LD Aspherical IF Macro"
to use with my 350D to replace the 18-55 kit lens as I had read some very
good reviews on websites and in magazines. The lecturer of my photography
course has pointed out that several pics in my assignments are fairly soft.
The confusing aspect is that this problem is a lot more evident on some
shots than on others (even when the subject matter is the same). I cant see
any common trends, the problem seems to randomly occur at a variety of
aperture settings, focal lengths and shutter speads and when the camera is
on a tripod. I dont see the same problem when using a Canon or Sigma lens.

The following suggestions have been put forward:

1. It is a "defective" lens
2. These lenses dont work properly with Canon cameras (Auto Focus not
compatible)
3. I should avoid this brand at all cost

Any other ideas? Anyone else seen a similar problem?

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tomm42 - 28 Mar 2006 15:08 GMT

> I recently bought a Tamron "SP AF28-75mm F/2.8 XRDi LD Aspherical IF Macro"
> to use with my 350D to replace the 18-55 kit lens as I had read some very
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>
> Any other ideas? Anyone else seen a similar problem?

Don't own the lens but did a lot of research on it. Problem is the same
with a lot of off brand lenses. Quality control is not up to OEM
standards. There is a lot of variability in the lenses. If you haven't
had the lens too long I'd take it back to your dealer. Just tell them
that for whatever you paid for it it is not a good lens and that you
want a replacement. Did that twice on a Sigma lens, the third copy was
a very good lens, but I was a known pro at a pro dealer. One notable
message about this lens on Fred Miranda's evaluation site "Hard to find
a good copy", otherwise most reviewer thought it was a great lens. Good
luck

Tom

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