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02-15-2008, 02:32 PM   #1
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FA77 Limited focusing ring

Has any one notice that the FA77 focusing ring is not as smooth as the FA31 Limited? I'm definitely spoiled, as I was really impressed with the focusing feel of the FA31. For example, I can easily focus with just one finger with the FA31; there's just slightly too much resistance on the FA77 to be able to do this comfortably.

02-15-2008, 03:00 PM   #2
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Fa77 focusing ring is not bad but the travel is a bit short. I preferred manual focus from voigtlander 125mm macro which has a very smooth and beautiful manual focus.
02-15-2008, 06:00 PM   #3
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QuoteOriginally posted by twinda1 Quote
Has any one notice that the FA77 focusing ring is not as smooth as the FA31 Limited? I'm definitely spoiled, as I was really impressed with the focusing feel of the FA31. For example, I can easily focus with just one finger with the FA31; there's just slightly too much resistance on the FA77 to be able to do this comfortably.
There are 2 revisions of FA77. The front barrel of the 1st rev is supported and guided by 2 brass plates (but lean toward on side of the lens) and the focus ring can get a little heavy depends on the angles. If you mount a metal hood on it, it will get worse. The 2nd rev has 3 brass plates to spread the weight evenly and the focus ring feels lighter and will stay smooth even with a metal hood on it. However, due to the structural differences, the FA43/77 do have heavier focus ring than the FA31 (which is not a helicoil design but barrels with rollers so there is simply no resistance on the focus ring). If you bought it new recently, you have the rev2. If you bought it used (especially with the green pouch), you probably have the rev1.
02-17-2008, 07:43 AM   #4
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QuoteOriginally posted by wlachan Quote
..However, due to the structural differences, the FA43/77 do have heavier focus ring than the FA31 (which is not a helicoil design but barrels with rollers so there is simply no resistance on the focus ring).
Thanks, that explains the different focusing feel. I also found an old post on the pentax mailing list where someone noticed a change in the resistance as you change the orientation of the camera. Surprisingly, mine (a newer copy) behaves the same way -- it's slight but noticeable. Definitely not a big deal.

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