K1 with DA 55-300 f4-5.8 (Mark II) & AF 1.7x converter

Started 11 months ago | Discussions thread
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KPM2 Contributing Member • Posts: 625
K1 with DA 55-300 f4-5.8 (Mark II) & AF 1.7x converter


I miss a little that I can not use my longest lens, the DA 55-300 (Mark II) f4-5.8 in the FF mode of the K1.

I tried therefore my old AF 1.7x converter with it, so that I simulate for the lens a ca APS-C camera. (because I crop 1.7 and not 1.5 and have now a kind of 510mm lens for the FF mode of the K1).

I get no vignetting:

a test picture with a small 1/2 L bottle:

the lens was full open, @ 300mm and it's ca. the closes distance I can get

I will take such pictures with it, where I need the FF view for to get the manual focusing better for me as in the smaller crop view frame.

OK, I got only the nose in focus....but let's hope I get in right in the next tries

It's no crop, it's at the ca. min. distance I can get now at 300mm and AF 1.7x converter in the FF mode of the K1.

IQ wise: I took the picture through a double glass window....and the noise and grain comes from my PP and not so much from the ISO12800 ... I have to wait for a sunny day.

best regards KPM2

Pentax K-1
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