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6 Days Ago   #1
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Join Date: Sep 2017
Posts: 3
Better for manual zooming FA80-160 or F80-160mm

Hello,
i want to buy a 80-160mm Zoom for manual zooming. Which is the better one:
* FA80-160
or
* F80-160mm

Is the screw degree the same on the FA to F lens?
Thank you.

5 Days Ago - 1 Like   #2
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Join Date: Mar 2007
Location: Christchurch, New Zealand
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Posts: 470
If you are referring to the Pentax 645 medium format lenses, then there are two versions of this lens. The A (manual focus but auto exposure) and the FA ( auto focus and auto exposure). There is no F version.

The A version gets a rating of 9 and the FA version a rating of 9.5 from users here at PentaxForums. The FA version is about three times the price of the A version.

So either would do for you if you want manual zooming. Assuming you mean zooming and not focusing. If you mean manual focusing, then again either would do, because you can switch the FA version to manual focus by shifting the focusing ring.

Regards

Chris
5 Days Ago   #3
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Join Date: Sep 2017
Posts: 3
Original Poster
Thank you Chris,

yes i mean the A version. I am wrong with the "F".
This means the degree for adjusting the focus ring of the FA and F is similar or the same...?
Thank you.
5 Days Ago - 1 Like   #4
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Join Date: Jul 2017
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Posts: 15
I have tried both and did not notice any significant difference in manual focusing. I purchased the FA version.

5 Days Ago   #5
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Join Date: Sep 2017
Posts: 3
Original Poster
Thank you.
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