Fotasy 8mmFishEye f/3.8 MFT Mount 4/3" CCTV Lens for Micro 4/3 M4/3 MFT Camera (Black)
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- Mount: Micro Four Third mount; Focal length: 8mm; Aperture: F3.8-16
- Elements/group: 6/5
- Angle of view(AOV): 180 Degree
- Aperture blades: 6; Minimum focus distance: 100mm
- Fits MFt Mount Cameras, Panasonic G3 G5 G7 GH1 GH2 GH3 GH4 GF5 GF6 GF7 GF7K GM1K GM5 GX1 GX2 GX7 GX8 GM1 GM5; Olympus E-P1 E-P2 E-P3 E-P5 E-PL1 E-PL2 E-PL3 E-PL5 E-PL6 E-PL7 OM-D E-M1 E-M5 Mark II E-M10 E-PM2 E-PM1, BlackMagic Design MFT Mount Camera
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Fotasy 8mm f/3.8 MFT mount 4/3" Fisheye CCTV Lens for Micro 4/3 M4/3 MFT Camera, Panasonic G1 G2 G3 G5 G7 GH1 GH2 GH3 GH4 GF1 GF2 GF3 GF5 GF6 GF7 GF7K GM1K GM5 GX1 GX2 GX7 GX8 GM1 GM5; Olympus E-P1 E-P2 E-P3 E-P5 E-PL1 E-PL2 E-PL3 E-PL5 E-PL6 E-PL7 OM-D E-M1 E-M5 Mark II E-M10 E-PM2 E-PM1, BlackMagic Design MFT Mount Camera
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After using this for quite some time, and analyzing the photos quite a bit, I thought I'd further iterate my review.
This was the first time I've used a manual focus lens in decades. I was a bit worried as I have used cameras with a "focus by wire" system and I thought I lost the knack of manually focusing a lens. Turns out that "focus by wire" systems are just terrible. Focusing feels completely natural with this. My fears were also allayed by the fact the the DoF is immense on a lens with this short of a focal length. I set it to infinity (which is just slightly before the infinity mark on the focus ring) and even at f3.8, practically everything from 3 feet on out is focused reasonably well.
This lens is small. It's smaller around than my Panasonic 20mm f1.7 lens. It's just a bit longer, though that's due to the non-removable metal hood (there may be screws to remove the hood under the sticker on the front). Along with the hood, the mount is metal and fits the camera body firmly and snugly. The whole thing feels dense and I think it could take a beating. The focus ring is nicely damped, though it turns a bit too easily for my tastes as there there have been times I have brought the camera up to take a picture and found the lens focused all the way in. The aperture ring isn't indexed, but is even stiffer to turn than the focus ring, which is nice so you can immediately feel if you are turning the wrong ring. Both rings have a removable "knob". I removed the aperture knob so I don't accidentally move both at once. Over all, it doesn't look all that fantastic on my camera, and I doubt it will look good on yours either, though beauty is in the eye of the beholder. My camera body is a retro looking chrome and black rangefinder style, and this looks out of place on it, and I'm having a hard time imagining it looking good on any currently available body.
The image quality can be nice, especially away from the edges and stopped down a bit and the center can be quite sharp. The edges suffer from quite a bit of smearing, but after de-fishing, the worst of the smearing will have been cropped out. There is a ton of fringing when used on bright days (purple fringing really sticks out when it's around green leaves and a partly cloudy sky) This can be taken care of in post, but it's more work which means more time, and getting the fringe color right can be tricky sometimes. I've all but eliminated it on a few photos I've taken that I particularly like so I know it's possible, but again, it takes time.
I still give a 4 star rating, in part because this lens is so stinkin' cheap. Fisheye lenses used to be a pretty niche market back in the film days. Today, though, one can de-fisheye a photo acceptably with free software (Hugin is what I use) and effectively have an ultra-wide angle lens quite inexpensively.
If you are are on a budget and want to play with a fisheye/UWA lens, I would recommend this wholeheartedly. At worst you'll have a tiny lens with a crazy perspective rolling around in your camera bag that you can throw on your camera when you feel like you're in a slump. If you are on a budget and you are sure you want a fisheye, I would have to recommend spending up (as I did) to the 7.5mm f3.5 lens by Samyang/Rokinon/Bower. That lens is impressively sharp corner to corner and de-fishes incredibly well.
link to the test footage
Here's two examples - the lens is wide enough to shoot a full on double rainbow all the way across the sky. notice the lens hood on the sides of each photo.