You asked

What are the alternatives to the laowa 15mm f 5 cookie ff?

I don't have a list of other lenses to compare against the Laowa 15mm f/5 Cookie FF, so I can't name specific alternatives without guessing. What I can tell you is that it's a manual-focus, non-stabilised pancake ultra-wide at f/5, and it's designed for full-frame bodies. On APS-C it frames like about 22mm (or 24mm on Canon).

To compare lenses yourself, start with Lenses, which explains what the f-number means for light and background blur. If you're weighing a wider aperture or autofocus, that's the page to read first. For how crop size changes the field of view, see Sensor sizes. The Laowa 15mm f/5 Cookie FF page also lists every camera it fits, if you want to check compatibility with your body.

Written by Claude from this site's pages.

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