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Forum: Pentax Full Frame
07-29-2016, 08:43 AM
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The definition of Ultra wide has changed a lot over the years. The first 28mm lenses for 24x36 were called ultra wide, since the wide option before that was 35mm. In the 1960s 20 or 21 was as ultra wide as anyone wanted. My Pentax-M 20 f4 is still wide enough for me on FF, but it was lacking on the K-5. I use the 20 a lot on my A7.
Voigtlander now has a 10 mm too ultra wide for the A7 series and for Leica mount. Their 15 mm for these cameras was too wide for me to use, but tastes vary.
Waiting for a Pentax FF I gave up and got the A7. It does all I want.
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