Mac users, Macphun's all-in-one photo editor Luminar is available for just $69£52 for new users, or $59£44 for existing Macphun users. We rated Luminar as "Highly Recommended". Visit the Luminar web site to try it for free.
Use coupon code "PHOTOBLOG" to save another $10 on Luminar.
Windows users, Macphun's all-in-one photo editor Luminar is now available in beta for free ahead of the full release late 2017.
We rated Luminar for Mac as "Highly Recommended". Visit the Luminar web site to try the beta for free.
Mounting between a mirrorless camera and an SLR lens, the Speed Booster adapter from Metabones and Caldwell Photographic increases maximum aperture by a full stop (hence its name) and has a focal length multiplier of 0.71x. This essentially means that full-frame SLR lenses can be used on a compact system camera with an APS-C sized sensor with (almost) the same angle-of-view coverage as originally designed. For example, a 28mm lens becomes a 19.9mm with the Speed Booster - if you then mount it on a camera with a 1.5x “crop factor” you’ll end up with a 29.8mm equivalent solution. The first Speed Booster enables users to mount Canon EF lenses to Sony NEX bodies, with auto-aperture, image stablisation, EXIF and (slow) autofocus support for post-2006 Canon-brand lenses. It will be available in later this month from Metabones’ website and its worldwide dealer network for $599 plus shipping and applicable taxes and duties.
Metabones Press Release
Metabones and Caldwell Photographic Introduce Speed Booster
Petersburg, VA, USA, January 14, 2013 - Metabones® and Caldwell Photographic jointly announce a revolutionary accessory called Speed Booster™, which mounts between a mirrorless camera and a SLR lens. It increases maximum aperture by 1 stop (hence its name), increases MTF and has a focal length multiplier of 0.71x. For example, the Canon EF 85mm f/1.2L II lens becomes a 59mm f/0.9 lens on a Sony NEX camera, with increased sharpness. The faster F-stop allows for shallow depth-of-field and a lower ISO setting for decreased noise.
Speed Booster is also particularly pertinent to ultra-wide-angle SLR lenses. The combined focal length multiplier of Speed Booster and an APS-C mirrorless camera is approximately 1.09x, making the combination almost “full-frame”. Full-frame ultra-wide-angle SLR lenses largely retain their angle-of-view on an APS-C mirrorless camera when Speed Booster is used.
The optics of Speed Booster is designed by Brian Caldwell, PhD, a veteran of highly-corrected lens designs such as the Coastal Optics 60mm f/4 UV-VIS-IR APO Macro lens with exemplary MTF performance (focusing done with visible light requires no correction whatsoever for the full spectrum from UV to IR).
Speed Booster serves double-duty as a lens mount adapter, from Canon EF lens (but not EF-S) to Sony NEX, with auto-aperture, image stablization, EXIF and (slow) autofocus support for late-model (post-2006) Canon-brand lenses. It will be available in January 2013 from Metabones’ web site and its worldwide dealer network for US$599 plus shipping and applicable taxes and duties.
Other mount combinations will follow shortly afterwards. Leica R, ALPA, Contarex, Contax C/Y and Nikon F (with aperture control for G lenses) will be supported, as will Micro 4/3 and Fuji X-mount cameras. Support for other mounts will be added in the future.
To learn more details about this revolutionary technology, read the Speed Booster White Paper on Metabones’ web site.