K-mount adapters for Pentax new-mount cameras

Started 11 months ago | Discussions thread
Barry Pearson
OP Barry Pearson Veteran Member • Posts: 8,723
Re: Speculation: a combined adapter and teleconverter

Heritage Cameras wrote:

Barry Pearson wrote:

Consider an extra item: a new-mount combined adapter and teleconverter.

That wouldn't be any use as a teleconverter for new-mount lenses. But I don't believe Pentax should bother developing the sort of new-mount lenses for which teleconverters are applicable. Teleconverters tend to most useful for longer lenses. And those should be K-mount lenses, suitable for SLRs as well as new-mount cameras.

A combined adapter and FF teleconverter might be about 25mm front to back, whereas a separate FF teleconverter attached to an adapter might total 45mm front to back. The combined item would be lighter and cheaper.

A tele converter could also allow APS-C lenses to cover full frame...

Yes. Good point!

My experience with the current Pentax DA 1.4x Rear Converter is that it is typically more than an "ASP-C teleconverter", but less than an "FF teleconverter".

It typically does enable my APS-C lenses to cover more of an FF frame, but often not all of it. A true FF teleconverter should do a much better job.

 Barry Pearson's gear list:Barry Pearson's gear list
Ricoh WG-6 Panasonic LX100 Ricoh GR III Pentax K-7 Pentax K-3 II +27 more
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