A new Irix lens in the Dragonfly specification joins the 11mm f/4, 15mm f/2.4 and 150mm f/2.8 Macro lenses. These have already impressed us with their high quality, both optically and in terms of construction. Now we have the 45mm f/1.4, a fast slightly wider than normal standard lens, manual focus only, that sits to make more complete the range of primes from 11mm through to 150mm. Let’s see how the 45mm focal length appeals in actual use and how the new lens performs, using the 50MP Canon EOS 5DS R DSLR body.
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https://www.ephotozine.com/article/irix-45mm-f-1-4-dragonfly-review-34668