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TTArtisan 11mm f2.8 Fisheye Sample Images

I got my copy, but unfortunately focusing scale or lens calibration is totally incorrect. When I get sharp focus in infinity, the focus scale shows 0.3m. The images are sharp at that point, but I will still return the lens and maybe try some other time again.

Anyways, here are some samples:

P1000224.jpg by Johannes Koskinen, on Flickr
P1000239.jpg by Johannes Koskinen, on Flickr
P1000246.jpg by Johannes Koskinen, on Flickr
P1000248.jpg by Johannes Koskinen, on Flickr
P1000230.jpg by Johannes Koskinen, on Flickr
P1000233_DxO by Johannes Koskinen, on Flickr
P1000227.jpg by Johannes Koskinen, on Flickr
 
That’s a shame. I had a Samyang FE for m43 many years ago with the same problem. In that case, there was an easy DIY fix available which involved taking off the mount, undoing a little lock screw, and then rotating the rear element in its housing. It was a bit trial and error, but you could get it to be properly calibrated. I’m not suggesting that here, but mention it out of interest. It’s frustrating that these things are let through QC at manufacture.
 
The funny thing is that the closest focus distance (17 cm) seems still to be valid, so you adjust focus from 0.17..0.3.
Maybe I just keep my M43 fisheye and go for S14-28
 
jomppak said:
The funny thing is that the closest focus distance (17 cm) seems still to be valid, so you adjust focus from 0.17..0.3.
Maybe I just keep my M43 fisheye and go for S14-28
Click to expand...
That is normal behavior! If the mount is to short to the sensor, you maybe need 1 or 2 additional mm to go to infinity. But 1 or 2 mm at minimum distance are nearly not notable, only with exact measurements (maybe it is now 17,5cm …)
 
I would love an L-mount equivalent of my 8mm Olympus FE. It’s a major reason for me to keep an MFT camera when I jump to L-mount!
 
RBecker said:
I think the special feature of the Olympus Fisheye is not the angle, it is the aperture! The Laowa ultra wide angle lenses are awesome, but big aperture is not the strength of these lenses.
For astrophotography the Olympus is unique…
Click to expand...
Going off-topic, but you're quite right, of course: on micro four thirds it'd be equivalent to a 16mm f/1.8.

The closest equivalent for L-Mount would be the Sigma 14mm f/1.8 DG HSM Art.
 
Yeah, I had the Oly 8mm FE when I was running Olympus gear. It's quite the lens really.
 
AlanC said:
Going off-topic, but you're quite right, of course: on micro four thirds it'd be equivalent to a 16mm f/1.8.

The closest equivalent for L-Mount would be the Sigma 14mm f/1.8 DG HSM Art.
Click to expand...
That comparison is not really correct: The Sigma is an rectilinear lens (without distortion), the Olympus is a fisheye with huge distortion. Also the Olympus has an angle of view of a typical fish eye with 180 degrees diagonal. The Sigma as a classical ultra wide angle has "only" 114 degrees. Any fisheye will offer a much wider field of view even with longer focal length...
But you are right: for l-mount the Sigma 1.8/14 is still the the biggest aperture with the shortest focal length.
 
RBecker said:
That comparison is not really correct: The Sigma is an rectilinear lens (without distortion), the Olympus is a fisheye with huge distortion. Also the Olympus has an angle of view of a typical fish eye with 180 degrees diagonal. The Sigma as a classical ultra wide angle has "only" 114 degrees. Any fisheye will offer a much wider field of view even with longer focal length...
But you are right: for l-mount the Sigma 1.8/14 is still the the biggest aperture with the shortest focal length.
Click to expand...
Also, the connection between FOV and focal length sort of breaks down with fisheyes. So, an 8mm m43 fisheye is not necessarily a 16mm FF fisheye.
 
RBecker said:
That comparison is not really correct: The Sigma is an rectilinear lens (without distortion), the Olympus is a fisheye with huge distortion. Also the Olympus has an angle of view of a typical fish eye with 180 degrees diagonal. The Sigma as a classical ultra wide angle has "only" 114 degrees. Any fisheye will offer a much wider field of view even with longer focal length...
But you are right: for l-mount the Sigma 1.8/14 is still the the biggest aperture with the shortest focal length.
Click to expand...
Now that was something I didn't know: in addition to the circular and full frame fisheye variants there are different forms of projection (Equidistant, Equisolid angle, Stereographic and Orthographic), each with their own formula to calculate the focal length, and that focal length cannot be compared to the equivalent for a rectilinear lens.

There doesn't seem to be anything close to the Olympus for L-Mount.
 
AlanC said:
There doesn't seem to be anything close to the Olympus for L-Mount.
Click to expand...
The TTArtisan in terms of FOV and projection is close to the Oly fisheye, but it's slower and only as sharp at the edges at f5.6 as the Oly is at f1.8. The Oly lens is quite an amazing piece of glass actually.
 
I haven't owned a fisheye lens since Pentax 645 film days, but I ordered one of these today in L-mount. I have plans for this summer in Maine involving astro, and various reviews show this to be quite decent, and especially for the price. An easy decision.
 
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