Recommend a 28-200/300 zoom for MZ5N

Posted 13/01/2008 - 11:39 Link
I have an old autofocus Sigma 28-200 zoom for my MZ5N.

The trouble is when I open it up to maximum aperture, f3.5, it is very soft.

I want a new lens in the same range or similar (28-200/300), but with a much sharper image at maximum apertures.

I've seen a Sigma 28-300mm F3.5-6.3 DG Macro and a Tamron AF 28-300mm XR Di LD Aspherical Macro IF f3.5-6.3 (62mm), and was wondering if anyone had any recommendations or thoughts on these.

I need the lens to be compatible with film (obviously) and ideally want the range to be 28-200/300 in 35mm not digital (I believe focal lengths for digital are different).

I'm also happy to buy second-hand if people could recommend a decent (not soft) lens.

Many thanks
niblue
Posted 13/01/2008 - 11:45 Link
I think you'll probably find that none of these sorts of lenses will be really sharp wide open - needing stopping down to F8 or so for that.

I had the Pentax 28-200 and found that a pretty decent performer, however I've heard that the later Tamron (not the one the Pentax is based on) is a bit better.

Given that none of these lenses are likely to be mind-blowing wide open it might be an option to consider keeping the one you've got an adding a prime or two (even manual focus ones) for when you need real sharpness and larger apertures.
niblue
Posted 15/01/2008 - 10:21 Link
To give an idea of what might be a reasonable price for the Pentax 28-200 - I just sold mine (excellent condition with the original box, caps, hood and a 77mm UV filter) on Ebay and it made just under £100.

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