Pentax K1 at APSC use
Oiche
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Senior Member
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Posts: 2,045
Re: Pentax K1 at APSC use
Plakanina wrote:
Oiche wrote:
Plakanina wrote:
using APSC lens the 12-24mm will functions like composition adjustment and pixel shift still work
Just use FF mode and crop if and when required to your liking, many DA lenses will go bigger than the crop mode.
For example, the HD DA 20-40 f2.8-f4 Limited works on full frame from 23mm-37mm without hard vignetting and the IQ is amazing. Therefore you'll get more out of your DA lenses although some like the DA15 not so much.
PentaxForums has a FF compatibility chart for every DA lens grading them from A - D, even zooms at varying focal lengths.
😉
Super. Now the 12-24mm seems ok at 18mm and 23mm is this in full frame terms? 18mm in APSC is about 27mm in full frame equivalent.
Yes 23mm - 37mm on FF without hard vignetting, you will still have normal vignetting and more pronounced than a FF lens and varies with focal length and aperture. I think 30mm is the best FF coverage bang in the middle of the zoom range and obviously stopping down helps get rid of normal vignetting too. You probably will have to crop slightly to get totally rid of vignetting too depending on focal length.
Pentax K-70
Pentax smc DA* 60-250mm F4.0 ED (IF) SDM
Pentax smc DA 40mm F2.8 Limited
Samyang 14mm F2.8 ED AS IF UMC
HD Pentax DA 15mm F4 ED AL Limited
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