There are a lot of them, but....
First, this means manual-focusing ONLY lenses. I know that auto-focusing lenses can be used in manual-focus mode, but that's not the point of this discussion. If you want to discuss them -- start your own thread.
This also means let's NOT talk about EOM super-wide-angle lenses. Sure, Minolta, Pentax, Canon, Yashica, Contax, Nikon, Olympus and other camera manufacturers made super-wide-angle lenses, but if you want to discuss them -- start your own thread. Camera manufacturers' lenses are made to fit on their cameras, while 3rd party lenses are made to fit on multiple cameras.
This thread is about independent lens manufacturers' manual-focusing, super-wide-angle lenses. By "Super-Wide-Angle", I mean anything wider than 24mm -- and NON-FISHEYE lenses. If you want to discuss them -- start your own thread. I also don't mean wide-angle adapters. If you want to discuss them -- start your own thread.
I had the opportunity to examine five 3rd-Party, super-wide-angle lenses, but this is not meant to cover the entire range available. There are other 3rd-Party companies that made super-wide-angle lenses, and there are other super-wide-angle lenses in other focal lengths than the five I had access to.
I did not have the opportunity to test these lenses – just to look at their features –- but perhaps some of you have.
Tokina 21mm – I’ll start with a Vivitar 21mm f3.8, made by Tokina. This one has an interchangeable TX lens mount, and Vivitar may have sold other 21mm lenses with other interchangeable mounts or fixed mount – from Tokina or other lens makers.
This Tokina 21mm f3.8 that I examined has a 72mm filter thread, stops down to f16, and focuses to 11 inches.with a 225° turn for very precise focusing. Heavy, all-metal contruction.
Kino 20mm – Next up is a Vivitar 20mm f3.8, made by Kino of Kiro fame. This one has a fixed mount and may only have been available under the Vivitar label – I don’t know.
This Kino 20mm f3.8 that I examined has an extra-wide 82mm filter thread, stops down to f22, and focuses to 6 inches.with a 225° turn for very precise focusing. Heavy, all-metal contruction.
Vivitar 19mm – I have no idea who made this 19mm f3.8 lens -- there is no serial #. A guess would be Cosina. This one has a fixed mount and may only have been available under the Vivitar label – I don’t know.
This “Vivitar” 19mm f3.8 that I examined has an 62mm filter thread, stops down to f22, and focuses to 8 inches.with a 90° turn. It’s the smallest of these five.
Sigma 18mm – Sigma made different 18mm lenses with different maximum apertures – and features. I believe some had the interchangeable YS mount. This one has a fixed mount, a fast f2.8 aperture and four built-in filters.
This Sigma 18mm f2.8 that I examined has an 62mm filter thread, stops down to f22, and focuses to 8 inches.with a 180° turn.
Tamron 17mm -- Tamron probably made more 17mm models that anyone else – varying in the filter size, the maximum aperture, the lens mount, and other features.
The Tamron 17mm f3.5 that I examined has an 67mm front -- but no filter thread, and no built-in filters -- stops down to f32, and focuses to 10 inches.with a 180° turn.
Unlike some super-wide-angle lenses, all of these lenses allow filters on the front of the lens, but vignetting has to be watched carefully.
There are several of other super-wide-angle lenses that were made by Tokina, Kino, Tamron, and Sigma. Some of these were probably sold under other names.
And there were other 3rd Party super-wide-angle lenses, too, such as Asanuma. I don’t know much about them – but I bet some of you do.
First, this means manual-focusing ONLY lenses. I know that auto-focusing lenses can be used in manual-focus mode, but that's not the point of this discussion. If you want to discuss them -- start your own thread.
This also means let's NOT talk about EOM super-wide-angle lenses. Sure, Minolta, Pentax, Canon, Yashica, Contax, Nikon, Olympus and other camera manufacturers made super-wide-angle lenses, but if you want to discuss them -- start your own thread. Camera manufacturers' lenses are made to fit on their cameras, while 3rd party lenses are made to fit on multiple cameras.
This thread is about independent lens manufacturers' manual-focusing, super-wide-angle lenses. By "Super-Wide-Angle", I mean anything wider than 24mm -- and NON-FISHEYE lenses. If you want to discuss them -- start your own thread. I also don't mean wide-angle adapters. If you want to discuss them -- start your own thread.
I had the opportunity to examine five 3rd-Party, super-wide-angle lenses, but this is not meant to cover the entire range available. There are other 3rd-Party companies that made super-wide-angle lenses, and there are other super-wide-angle lenses in other focal lengths than the five I had access to.
I did not have the opportunity to test these lenses – just to look at their features –- but perhaps some of you have.
Tokina 21mm – I’ll start with a Vivitar 21mm f3.8, made by Tokina. This one has an interchangeable TX lens mount, and Vivitar may have sold other 21mm lenses with other interchangeable mounts or fixed mount – from Tokina or other lens makers.
This Tokina 21mm f3.8 that I examined has a 72mm filter thread, stops down to f16, and focuses to 11 inches.with a 225° turn for very precise focusing. Heavy, all-metal contruction.
Kino 20mm – Next up is a Vivitar 20mm f3.8, made by Kino of Kiro fame. This one has a fixed mount and may only have been available under the Vivitar label – I don’t know.
This Kino 20mm f3.8 that I examined has an extra-wide 82mm filter thread, stops down to f22, and focuses to 6 inches.with a 225° turn for very precise focusing. Heavy, all-metal contruction.
Vivitar 19mm – I have no idea who made this 19mm f3.8 lens -- there is no serial #. A guess would be Cosina. This one has a fixed mount and may only have been available under the Vivitar label – I don’t know.
This “Vivitar” 19mm f3.8 that I examined has an 62mm filter thread, stops down to f22, and focuses to 8 inches.with a 90° turn. It’s the smallest of these five.
Sigma 18mm – Sigma made different 18mm lenses with different maximum apertures – and features. I believe some had the interchangeable YS mount. This one has a fixed mount, a fast f2.8 aperture and four built-in filters.
This Sigma 18mm f2.8 that I examined has an 62mm filter thread, stops down to f22, and focuses to 8 inches.with a 180° turn.
Tamron 17mm -- Tamron probably made more 17mm models that anyone else – varying in the filter size, the maximum aperture, the lens mount, and other features.
The Tamron 17mm f3.5 that I examined has an 67mm front -- but no filter thread, and no built-in filters -- stops down to f32, and focuses to 10 inches.with a 180° turn.
Unlike some super-wide-angle lenses, all of these lenses allow filters on the front of the lens, but vignetting has to be watched carefully.
There are several of other super-wide-angle lenses that were made by Tokina, Kino, Tamron, and Sigma. Some of these were probably sold under other names.
And there were other 3rd Party super-wide-angle lenses, too, such as Asanuma. I don’t know much about them – but I bet some of you do.