1.4 TC

markm
Posted 21/10/2026 - 15:47 Link
Pulled the trigger on a 1.4 TC. Used it with my150-450 lens & 55-300. Works very well; no autofocus issues on either lens.
Pentax KP Body, K70 Body. Lens 18-135 55-300 50-200 17-70 USM 100mm Macro Pentax 150 - 450 & Samyang 10mm
LennyBloke
Posted 22/10/2026 - 11:23 Link
The best Pentax converter produced IMO - have fun with it
LennyBloke
Lubbyman
Posted 22/10/2026 - 12:12 Link
Definitely an excellent TC, well worth having in the bag. Surprising that it works very well with the 55-300mm, I've never tried it, perhaps I should.

Try it with the 100mm macro that's in your sign-off. You'll get more magnification, no change in minimum working distance and to my eye no loss of image quality. Seeing little things even bigger through the viewfinder is always fun (for me, at least).

Steve
markm
Posted 23/10/2026 - 12:24 Link
Lubbyman wrote:
Definitely an excellent TC, well worth having in the bag. Surprising that it works very well with the 55-300mm, I've never tried it, perhaps I should.

Try it with the 100mm macro that's in your sign-off. You'll get more magnification, no change in minimum working distance and to my eye no loss of image quality. Seeing little things even bigger through the viewfinder is always fun (for me, at least).

Steve
My 55-300 is the older non-PLM version; perhaps that makes the difference. I have used the 100mm Macro lens with the 1.4TC; need to have a proper go with it.
Pentax KP Body, K70 Body. Lens 18-135 55-300 50-200 17-70 USM 100mm Macro Pentax 150 - 450 & Samyang 10mm

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