NiSi to announced the RF 15mm f/4 on January 8, 2021

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NiSi is getting into the RF mount lens game with their first lens for Canon in the form of an RF 15mm f/4. The new lens will be officially announced on January 8, 2021, and will cost $539 USD / £419 / €459 at launch.
NiSi 15mm f/4 Specifications






Focal Length(full frame)

15mm



Focal Length(APS-C)

22mm



Lens Mount

SONY E/CANON RF/NIKON Z/FUJIFILM X...

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I'm curious how it will stack up against the Laowa 15mm F2. Both are manual focus 15mm with filter threads, but one is bigger and heavier for 2 extra stops, now we need to see about IQ.
 
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Certainly interesting. I am a little surprised at the weight though, when you compare to lenses such as the Samyang 18mm f/2.8. Still, this is 15mm (albeit f/4) rather than 18mm, and we will have to see about IQ.
 
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Too slow for Astro, one of the use cases for this focal length. Could be useful for landscape, but frequently that is covered with a wide zoom. So, not seeing a big demand for this lens. I’m sure some forum members will enlighten me.
 
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Too slow for Astro, one of the use cases for this focal length. Could be useful for landscape, but frequently that is covered with a wide zoom. So, not seeing a big demand for this lens. I’m sure some forum members will enlighten me.
Maybe architecture but I agree that it is too slow for astro and hard to beat the Samyang 14mm/2.8 in the cheaper end of the market. 15mm is covered by the Tamron 15-30mm or Irix so hard to see where it would compete.
 
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WOW! That size is amazing! With an native RF mount, its a super compact package that we get here on an R5/6 camera! Thats nice for travel (aaah, damn corona).
I think F4 on ultra wide lenses is totaly fine, and the sice is great. For landscape and architecture but especialy travel this looks promising. Though I wonder how well the image quality can be.
 
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