Robert Blom Posted October 28, 2016 Posted October 28, 2016 Hi. I'm testing some spherical primes made by Technovision and I'm wondering if anyone here knows what lenses their conversions were based on? The T-stop is 1.4 on all of them and they cover Full Frame. Zeiss? K35, but the T-stop doesn't match? The 25mm confuses me. Thanks, Robert Blom
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