Kipon Baveyes Adapter
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Sample Images top
With the Canon EF 14mm f/2.8 L full-frame ultra-wide:
Whoa! A real 14mm-equivalnt lens on APS-C. This converter makes the 14/2.8 into a 10mm f/2.0!
With the Canon EF 50mm f/1.2 L full-frame lens:
This adapter makes the 50/1.2L into a 35mm f/0.85.
With the exotic Canon EF 50mm f/1 L:
This adapter makes the 50/1 L into a 35mm f/0.7!
This is what astronomers call a telecompressor: it reduces the effective focal length of your lens, and adds one stop of speed in the process.
I call it a wide-converter: it compresses a full-frame image onto an APS-C sensor to show the full-frame complete image on APS-C instead of cropping it!
It lets us use full-frame lenses on APS-C cameras. It really does make APS-C cameras work like full-frame cameras!
It lets APS-C sensors use the entire field of full-frame lenses, and adds one f/stop of effective speed in the process.
To keep this very simple, imagine this as a magnifying glass that makes the sensor look bigger to the lens. This magnifying glass also concentrates the light to become twice as bright in the smaller area in which it's concentrated.
These come in at least 20 versions to adapt just about any kind of lens to Fuji, Sony or micro 4/3.
This converter really works, giving us full autofocus, electronic diaphragm control, auto exposure, EXIF data and image stabilization.
For sanities' sake, the EXIF data records the actual focal length and aperture of the lens, not the converted values.
Even the exotic electronic manual focus of the Canon EF 50mm f/1 L really works with this adapter.
It really does let us use full-frame lenses on APS-C, and they retain their full-frame field of view.
Really does gives us an extra stop of speed.
Autofocus is very slower, and hunts or gets lost or stuck a lot.
There may be strong corner falloff on some lenses, but none on others.
Auto White Balance may not work as well.
Exposure may be off by a stop or more.
Resultant optical quality can be poor.
No automatic correction of distortion or lateral color fringes.
Tripod socket, Kipon Baveyes. bigger.
Tripod socket on bottom.
Kipon Baveyes. bigger.
Adapts from these lenses:
Nikon F; works with G lenses.
Sony Alpha (same as Minolta MAXXUM).
Contax & Yashica SLR
To these cameras:
5.485 oz. (155.5 g), Canon EF to Sony NEX version.
$310, September 2015.
Kipon Baveyes box. bigger.
Optical quality isn't great, but it really does work. It's worse than if you used an adapter that's just an empty tube.
If you count pixels, this isn't for you, but if you want to use a unique lens that simply doesn't exist for Fuji, Sony or micro 4/3, this is much better than no picture at all.
Resultant quality depends on your source lens; just like with teleconverters, there's no way to tell how well any particular lens works with other than to try it.
Here's the best part: unlike teleconverters that don't really work at fast apertures, I tried this with the exotic Canon EF 50mm f/1 L at f/1, and I kid you not, it really gets all the light to the sensor even at the full f/1 aperture.
It records everything from the lens as if it weren't converted; a 50mm f/2 lens gets recorded as 50mmm f/2, not the effective 35mm f/1.4 to which it's converted.
I'm impressed that I can see f/1.0 and f/1.1 as legitimate settings in the Sony A6000 with used with the Canon EF 50mm f/1 L!
The Canon EF 50mm f/1.2 L is shown as f/1.3.
Sony uses displayed values of f/1.0, 1.1, 1.2, 1.3 and f/1.4 to cover that range unambiguously.
AF performance is horrible.
Forget this for sports, but it works for landscapes or things that hold still.
Kipon Baveyes. bigger.
Mechanical quality is very nice; it's all very solid metal and feels very precisely made.
This is a fun gizmo for people who want to use oddball lenses on APS-C and micro 4/3 cameras.
It can be useful for using ultrawide or ultraspeed full-frame lenses on these formats.
The resulting optical quality is usually pretty bad; don't use this if you're trying to save yourself from buying the correct lenses for your camera.
Use this if you want to use your existing ultra-ultra wides or other exotic lenses on your toy cameras, but seriously folks, if you want good results, just shoot your Nikon, Canon and LEICA lenses on a full-frame Nikon, Canon or LEICA cameras for superior results.
This converter really does convert, but loses a lot of ergonomic and optical quality in the process.
This ad-free website's biggest source of support is when you get yours via these links to it at Adorama, at Amazon or at B&H. When you use those or any of these links to approved sources when you get anything, regardless of the country in which you live, it helps me keep adding to this free website — but I receive nothing for my efforts if you take the chance of buying elsewhere. Unlike a bottle of milk or a CD, Kipon doesn't seal its boxes, so you have no idea if you're getting a used, returned, incomplete or damaged product if you risk buying at retail. Never buy at retail. I use the sources I do because they have the best prices, service, return policies and selection— and they ship from secure remote warehouses where no customers or salesmen can get their sticky hands on your new camera before you do.
Thanks for helping me help you!
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