K-mount adapters for Pentax new-mount cameras

Started 11 months ago | Discussions thread
DougOB
DougOB Senior Member • Posts: 1,081
Re: The size and weight of an adapter

Barry Pearson wrote:

In order to get a feel for the size and weight of the Nikon FTZ Mount Adapter, I've compared it with something I know, the Pentax DA 1.4x Rear Converter.

Nikon FTZ Mount Adapter

Diameter: 70mm (?)
Height: 80mm
Casing size, front to back: about 30mm
Weight: 135 grams

Pentax DA 1.4x Rear Converter

Diameter: 65mm
Casing size, front to back: 20mm
Weight: 126 grams

(I'm not making a particular point here!)

A naive, and possibly stupid,  question... does a mount adapter need to have any glass in it?  Or simply Mount A to mount B, a bit of a spacer, and circuit/control pass though?

Having said that I believe that my K-to-Q converter is much more complicated than that...

Doug

 DougOB's gear list:DougOB's gear list
Pentax K-01 Pentax K-3 Pentax Q-S1 Pentax KP Pentax smc DA 15mm F4 ED AL Limited +30 more
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