Pentax 8-48mm f/1.0-1.2 C-Mount (Modded for m4/3)

            This is a modified C-mount lens allowing it to focus to infinity. It looks really rough since I just winged it with a Dremel, but it works extremely well.

Using a Dremel cutting blade, I cut the back of the C to m4/3 adapter off, screw it on to the C-mount, cut about 1mm off the back of the C-mount (brass coloured area) and cut a groove for the lens locking pin.

I then removed the mount from the lens and cut another 1mm off the back of the lens housing. Shimmed it with rings of paper until it focused exactly to infinity. You can see the paper shims sticking out a bit from the side of the lens

Taken on: February 7, 2021

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Sets appears in: • DIY Camera Equipment • Olympus 14-150mm F4.0-5.6 more » • OMD E-M1 II « less

Camera: Olympus E-M1MarkII, f/5.6, 1/60 sec, 150mm, ISO 200 (more info) (hide info)

Camera:	Olympus E-M1MarkII
Aperture:	f/5.6
Exposure Time:	0.017 sec (1/60)
Focal Length:	150mm
ISO:	200
Exposure Bias:	-1 EV
Flash:	On, Fired
Exposure Program:	Program AE
Exposure Mode:	Manual
Metering Mode:	Multi-segment
White Balance:	Auto
Color Space:	sRGB
Software:	Version 3.4
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