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Old Nov 14, 2006, 6:37 PM   #1
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Join Date: Mar 2006
Posts: 373

This is something I feel every lens technical specs sheet should include yet it is not being provided by either manufacturers or reviewers. I am sure there is a rationale for it yet I feel it is not in the consumer's best interest.

I think it will be useful to have a place where we can refer to when looking into a zoom lens.

Please, share with us the values for the Pentax mount zoom lenses you own.

Here is some for the lenses I own:

Sigma 18-125mm F3.5-5.6
18-19mm: F3.5
20-29mm: F4
30-69mm: F4.5
70-125mm: F5.6

Pentax DA 18-55mm F3.5-5.6
18-19mm: F3.5
20-34mm: F4
35-49mm: F4.5
50-55mm: F5.6

(this is from another forum)
Sigma 17-70mm F2.8-4.5 DC Macro
17-23mm: F2.8
24-35mm: F3.5
35-65mm: F4.0
65-70mm: F4.5

And here are some I would like to know of:
Pentax FA 28-105mm F3.2-4.5 AL IF
Pentax DA 50-200mm F4-5.6
Tamron 70-300mm F4-5.6
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