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Open full-size image in new tab. Same image at f/2.8 with 200% zoomed-in crop boxes showing star performance. Significant coma and loss of sharpness in corners. Some chromatic abberation. Open full-size image in new tab. 2 min. single exposure at f/3.5, ISO 1600, Canon EOS Ra, Bortle 3 sky. When you adapt it to a medium forma (55mm sensor), this lens is a beautiful portrait fisheye. The built-in lens hood is removed. Also similar to the Voigtlander UWA primes and some of the wide Laowa primes ( 12mm 2.8 and 15mm 2.0) this lens shows some slight green color cast in the corners which can become visible with bright or evenly lit skies. Sharpness infinity (42mp Sony A7rII) The thing that most obviously lets the TTArtisan 11mm f/2.8 fisheye lens down – or at least my particular copy – is the decentered optics. Shooting at f/2.8 it is a little disappointing to see some softness toward the right hand side fo the frame. This isn’t the first time I have seen or heard of this when talking about the new “Artisan/s” brands of lens coming out of China either. Would this put me off buying this lens? I’m not sure. I really do think it would depend on my goals.
I have shortly been using this lens on my Nikon DSLRs and via adapter on a 24mp Sony camera. It is similarly good optically (with less field curavture though) while being much bigger and also more expensive. The lens seems to be mostly made from metal and a metal slip on lens cap is included as well. My lens also shipped with an 11mm optical viewfinder, which will be useful for Leica M users, but I am not sure whether it is an optional accessory, so if you need it be sure to get it with the lens. Vignetting and colorcast What confused me while I was browsing through the various discussions and articles is that while the manufacturer is stating that the lens is 11mm, which should be pretty ultra wide on a full-frame lens, that in reality it is more like 15.6mm, which suggests that it actually was meant for a DX/APS-C "crop factor" lens. If I were buying a lens that was supposed to be 11mm on full frame I would want it to be just that rather than 15.6mm. Then again I suppose when one gets into the wide angle realm it really doesn't make that much difference; I really don't know, as wide angle/ultrawide angle/fisheye has not been something I've explored much through the years. The video portion of this review along with a different selection of photos and short videos can be seen in this video: TTArtisans 11mm f2.8 fisheye on Leica M10 Fujifilm X-T3 and GFXA fish-eye is also great for taking in the Milky Way from horizon to horizon and for circumpolar star trails. I’ve also used such lenses during total solar eclipses to capture the passage of the Moon’s shadow across the sky. Les principales différences sont expliqués ci dessous. : caractéristiques, angle de vue, piqué et bokeh So yeah, a potentially optically imperfect fisheye lens designed to mount to a camera system that’s arguably almost entirely unsuitable for fisheye photography. Sound pointless? Well, maybe, but if I’ve not made it clear already, I have had a lot of fun with this lens so far. Focusing and aperture rings are smooth but a little bit too tight for my taste (some like it that way), I have the feeling they will loosen in the future The bad news begins when you mount it on an M. TT Artisans left out rangefinder coupling. Therefore, if you have a film M, or a CCD digital M, you’ll have to guess your way to focus along hyperlocal lines. Even if your M does the live view or EVF thing, it renders the included framing finder pointless, not to mention, relies on the digital M’s terrible live view system. Yes, I understand that its field of view is too wide for the M’s focus/framing window. Yes, I understand that, as a super wide-angle fisheye lens, most things are in focus anyway. But a lens made for a mount should support the most basic function set of that mount. I am disappointed.
As long as you can keep the horizon flat, and keep focus in the centre of the frame, this lens is sharp. The edge of the frame is fraught with softness, colour smears, and vignetting, but nothing that a little stopping down doesn’t mostly fix. And, nothing that users of ultra wide angle lenses aren’t used to anyway.very simply do first all your exposure/color correction and then Export to Fisheye-Hemi plugin using the “full frame” option Le plugin corrige votre image fisheye avec un algorithme complexe en minimisant la distorsion et en maximisant la preservation des détails de l’image The AstrHori 12mm 2.8 is way bigger and heavier. It has better flare resistance and CA correction but performs similar in terms of sharpness and coma correction.
The lens comes with an external 11mm metal viewfinder (very helpful if you don’t have live view, no frame lines in the viewfinder):
Open full-size image in new tab. Same image at f/3.5 with 200% zoomed-in crop boxes showing star performance. Huge improvement in sharpness of stars in corners/edge. Still some chromatic abberation and coma, but not obtrusive. Open full-size image in new tab. 2 min. single exposure at f/4, ISO 1600, Canon EOS Ra, Bortle 3 sky. With our usual approach we cannot get decent values on the vignetting of fish-eye lenses. What I can tell you is that the vignetting figures are significantly lower than those of rectilinear ultra wide angle lenses, especially compact ones. Sony A7rII | AstrHori 12mm 2.8 Fisheye | f/2.8
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