Manual variable aperture zoom on a digital Pentax

Started 3 months ago | Questions thread
Roland Karlsson Forum Pro • Posts: 29,605
Re: Manual variable aperture zoom on a digital Pentax

OK, the behavior for those A lenses seems weird.

I got a little curious and tested with my modern D FA 28-105 1:3.5-5.6

First I put it at wide and and F3.5. Then zooming back and forth the aperture was changing between 3.5 and 5.6.

Then I put it at the tele end and F5.6. Then the aperture stayed at 5.6 when zooming.

So, the camera (or lens) have some memory. It remembers where it all started. Because in the first case, when zooming from tele to wide, it changed from 5.6 to 3.5, but in the other case it kept 5.6.

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