Manual variable aperture zoom on a digital Pentax

Started 3 months ago | Questions thread
James O'Neill Veteran Member • Posts: 5,751
Re: Manual variable aperture zoom on a digital Pentax

Roland Karlsson wrote:

alex_virt wrote:

James O'Neill wrote:

Lenses don't all work with older bodies. The aperture ring was removed from DA and D-FA lenses so you can't use those on a Pre "A" film camera (not that DA would cover the whole image).

I successfully use DA 35/2.4, 50/1.8 and 70/2.4 on film. Of course, full frame digital is more demanding.

What does successfully use mean? What camera? Could you set aperture?

It depends on the lens and how much vignetting you get in the corners of the film frame, but everything back to the Super-A should see a DA lens as a lens with the ring positioned at "A" (obviously there is no ring), and read the aperture range from the contacts.  If you try to use them on something older (K1000) there is no way to control the aperture from the body.

 James O'Neill's gear list:James O'Neill's gear list
Pentax K-5 IIs Pentax K-1 Pentax smc FA 50mm F1.4 Pentax smc DA 18-250mm F3.5-6.3 Pentax smc FA 43mm F1.9 Limited +3 more
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