1. Did you get yours converted at PetaPixel? I have been looking into IR conversion and would be interested in your experience.
2. I use the website Kolari as a reference and will share their data here.
RF 85 f1.2: Good. It handles IR without significant hotspot issues
RF 50mm f1.2: Bad. It has a distinct center hotspot that becomes visible beyond f4. It can be useable wide open.
RF35mm f1.4, RF 24mm f1.4, RF 50mm f1.4 and RF 135mm f1.8, I haven't seen any testing for the hyrid VCM primes. I would expect the 135 to be hotspot prone as telephoto primes can struggle.
RF 100-400mm: Great. Performs great in all conditions with no hotspots.
RF 100-500mm: Great. Only starts to show center issues past f11.
RF 24-240mm: Mixed. A hotspot develops aound f8 and is most pronounced on the 24mm end.
If you perform any testing I would also be very interested in seeing your results. I think you are in a small category of people with a full spectrum R5ii with a nice lineup of RF primes.
Sep 08, 2026 at 05:26 PM
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