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

9 comments

1. Looks interesting! I wonder what the IQ will be like. I want a UWA prime for when I travel and the Samyang AF 14mm is my current top option but this could change that.

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2. Having the same filter thread as the RF 24mm-240mm is pretty convenient. I’ll have to watch for reviews and be a good boy this year.

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3. Having the same filter thread as the RF 24mm-240mm is pretty convenient. I’ll have to watch for reviews and be a good boy this year.

   
   I made it one of my goals to control my GAS this year and only get a UWA prime but I’m already looking at other lenses too. There’s no hope at resisting GAS haha

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4. 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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5. 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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6. Interesting how the market is shrinking, but new players join the game, e.g. NiSi, Yongnuo, and Laowa.
   
   Yes, I know NiSi aren't new to making lens filters.

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7. 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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8. 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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9. 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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