After a long hiatus from my photography hobby and RT I recently rebooted both interests and installed RT 5.11. My gear consists of an Olympus E-M1 Mark II and several older Zuiko Digital (ZD) lenses which I fit with the Olympus MMF-3 adapter.
If anyone else here shoots with a similar combination of gear I’d be interested in hearing if your experience mirrors or differs from what I see from the Profiled Lens Corrections settings in the Transform tab.
Firstly, if I select the ‘Automatically selected’ option the ‘E-M1MkII’ profile is activated for the camera; but, the lens profile is not populated. This is despite all my ZD lenses being in the lensfun database for some years now. Any idea why these lenses are not automatically detected from the metadata?
Secondly, if I select the ‘Manually selected’ option for the lens, and select the matching profile from those on offer, that profile does populate the lens profile box. However; a warning icon (‘exclamation point inside triangle’') also appears next to the lens profile box which, when I hover over it, states: “Warning: the crop factor used for lens profiling is larger than the crop factor of the camera. The results might be wrong.” I don’t recall seeing this warning before now. Is there some way to determine what crop factor was used to create the profile? I’d ignore the warning but for the fact the three possible corrections that come with these profiles are now disabled (grayed out). What’s your experience?
Appreciate the response, @HIRAM . In my case the crop factor of the camera and that of the older Four Thirds lenses likely used to profile the ZD lenses are ‘identical’, nominally 2x. That’s one source of my bafflement. More importantly, selecting the lens manually, as I said, disables any corrections that the profile might have offered.
I’m sure this worked in the (distant?) past; but, hopefully some Olympus / OM System users can shed further light on all this. Fingers crossed.