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Voigtl nder super wide heliar 15mm f 4 5 aspherical iii vs laowa 14mm f 4 ff rl zero d?

Both are manual-focus, unstabilised full-frame primes, and they sit very close together. The Laowa 14mm f/4 FF RL Zero-D is the one I'd pick for most people. It's a stop-ish brighter at f/4 and a touch wider at 14mm, and it fits five mounts, including Canon RF and L-Mount, where the Voigtländer doesn't.

The Voigtländer Super Wide-Heliar 15mm f/4.5 Aspherical III makes sense if you shoot Sony E, Leica M or Nikon Z and specifically want 15mm. It's a slightly slower, slightly tighter view.

If you're new to ultra-wide, the focal length guide explains where 14 to 15mm sits in the range.

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