I want to find the data about Pentax 28-200 lens:
minimal aperture values for different focus disctances.
I know this data for FA 35-80:
35-80 fmin: 4.0
43-55 fmin: 4.5
55-80 fmin: 5.6
I didn't find this data on www.phred.org/pentax/k :-(
How looks this data for Pentax 28-200 ?
BTW, is there some data that Pentax 28-80 is more
"sharp" than Pentax 28-200 ?
The data I have from russian Foto&Video journal:
Pentax 28-200
> 60 lpm (center) and >45 lpm (edge) - for short focuses
> 40 lpm (center) and >30 lpm (edge) - for long focuses
For comparison, for Nikkor 28-80 (from the same source)
which must be 'sharp' :
> 50 lpm (center) and >45 lpm (edge) - for short focuses
> 40 lpm (center) and >40 lpm (edge) - for 80 mm
Thanks for your help !
Mikhail Kuzminsky
ComputerWorld/Russia
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