Irix 15mm on A7iii Performance

Started 1 month ago | Questions thread
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Bill Zidis Junior Member • Posts: 31
Irix 15mm on A7iii Performance

Just got a crazy deal on eBay and bought the Irix 15mm 2.4 Firefly Canon EF for around £250 like new (literally,new not even a mark anywhere).

I used to own the Irix 11mm Blackstone when I had Nikon and I loved it.

I adapt it using my Sigma MC11 on my Sony A7iii.

I don't know if it's my idea but I find the lens slightly soft overall at F2.5 especially pointing bright signs.

When I look the whole image looking great but soft when you zoom in 100% (maybe my Sigma art lenses really spoiled me ).

I calibrated the focus of course using the screw on the lens.

At F3.5 is starting to become very sharp indeed.

Although the reviews on the internet shows excellent sharpness and contrast from F2.5 (maybe only on dslr ?) (Common issue that when you adapt uwa on mirrorless getting bit soft) or maybe this copy of the lens.

Got the lens to use it with my Ronin S as a secondary camera alongside my cinema camera.

Anyone has this lens with the same combo ?

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Sony a7
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