Yes the test have been done by many people, but this is a hard choice. Personally I couldn’t decide for a long time, after reading reviews and trying them both out. I preferred one, then changed opinion, then changed back again. Therefore here is another comparison of the two lenses.
Size and stealth factor, XF 50mm f2 wins: It’s small and light, even walking close up to people they won’t notice you, and if they do they won’t care with such a small camera and lens. Not only is the 56mm lens much bigger but add the difference in their lens hood, and the 50mm comes out much much smaller. If you are still new to street photography, this lens together with a flipscreen camera is awesome. Of cause if you plan to shoot weddings or portraits, this dosen’t matter.
Focal length, XF 56mm f1.2 wins: this is a very small thing and very personal but there is a noticeable difference between 50mm and 56mm. Personally I like the 56mm better.
Price, XF 50mm f2 wins: 449$ (50mm) vs 899$ (56mm), that’s a big difference.
Fast aperture, XF 56mm f1.2 wins: this is obvious, but it matters. Fast aperture f1.2 means more light for low light situations, it means smoother bokeh and to get better separation between objects in and out of focus. In low light situations you need a high shutterspeed for longer lenses (1/120) so you will need that f1.2 for night shooting, that made my 50mm unusable for me.
Closer focus, XF 50mm f2.0 wins: It’s not that it focuses super close, it’s more the 56mm that can only focus at long distance. If you want to take closer up shots of objects or closer portraits of part of the face, you can’t do it with the 56mm. Not a big deal for many people since they often carry two or more lenses.
Rendition, XF 56mm f1.2 wins: this is very subjective, but there is a clear difference in the look of photos from the two lenses. And I don’t just mean the look resulting from the different aperture. The 50mm has a more clear generic hard look, where the 56mm has more clarity/micro-contrast and has better colors. And the 56mm has some kind of softness (but still sharp) that can’t only be from the different aperture, try comparing this 50mm photo and this 56mm photo zoomed in. I heard lens guru The Angry Photographer say that both lenses are great without commenting on this, but I have also heard other people make the exact same observations as me.
Other notes (that doesen’t matter): the 50mm focuses a tiny bit faster, the 50mm is a tiny bit lens noisy when focusing, the 50mm is weather resists, 50mm has more rounded aperture blades. There’s also a APD version of the 56mm with better bokeh, but it’s more expensive and let’s in less light, don’t think it’s worth it.
- If you are a chicken, then size and stealth factor will matter for you. It matters more that you bring your camera and get the shot than if the lens rendition is perfect. Get the 50mm.
- If price matters to you, you could get almost get 2 lenses with the 50mm.
- What matters to me is that very characteristic rendition, almost unique like an old vintage lens but still sharp and with spot on colors. The XF 56mm f1.2 is my favorite lens.