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Lens focus The place to talk about your camera's glassware.

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Old 11th October 2017
RobEW RobEW is offline
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Nice possible sequence: 7.5, 15, 30, 60

I find the Oly 60 2.8 macro makes an excellent all round prime for its focal length, as well as being a great macro.

I recently acquired cheaply a used copy of the excellent Sigma 30 f/1.4 as a near standard focal length lens.

While idly considering something wider angled, I wondered about the Panasonic 15 f/1.7 among others. And then noticed a sort of geometric sequence of focal lengths. And if one were taking it further (and adding a fourth manufacturer) I guess the Samyang 7.5mm fisheye would continue the sequence as follows: .

Samyang 7.5mm f/3.5 fisheye
Panasonic 15mm f/1.7
Sigma 30mm f/1.4
Olympus 60mm f/2.8 macro

So - speculating further - there's no native 120mm for M43 as far as I know. Maybe something like this https://www.pentaxuser.com/forum/top...0mm-f2-8-19124 could be used with a suitable adapter?

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