A Tamron patent highlighting an autofocus (AF) 75mm f/1.4 prime lens for full-frame cameras came to light not too long ago – and the compact design combined with the low competition for this focal length has me thinking that, if the lens comes to fruition, it could do rather well.
Patent 2026-016892 was published in February on the Japan Patent Office platform and reveals a full-frame 75mm f/1.4 prime lens, with an optical design consisting of 8 elements arranged in 2 groups. This is a more refined approach to 75mm prime lenses, as you typically see primes covering this focal length made up of at least 10 optical elements.
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