New optical design: advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass to achieve extraordinary optical performance with improved corner sharpness, distortion and reduced vignetting.
Like the revolutionary original Metabones Speed Booster announced in January 2013, the Speed Booster ULTRA has a magnification of 0.71x, and so it effectively reduces the crop factor of mirrorless cameras with DX-sized sensors, such as Sony E-mount and Fuji X-mount cameras, from 1.5x to 1.07x. However, the new ULTRA design makes very effective use of exotic materials at the furthest limit of glassmaking technology, and as a result is well corrected for use with virtually all fullframe SLR lenses regardless of exit pupil distance. Thus, the Speed Booster ULTRA performs extremely well with professional-grade f/2.8 zoom lenses such as the 24-70mm f/2.8 and 70-200mm f/2.8 zooms by Canon and Nikon to produce 17-50mm f/2.0 and 50-142mm f/2.0 high-speed zooms, respectively. Similarly, high-speed fixed focal length lenses such as a 50mm f/1.2 will be transformed into a 35.5mm f/0.9 lens with excellent contrast and resolution from the center all the way to the edges of the image.
The following lens(es) have a protruding rear element and may not be compatible with or may require modification to fit the Speed Booster:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
You can return the purchase within 14 days of purchase provided that the following conditions are met.
If it's brand new and unopened, we'll give you a refund with with a 20% re-stocking fee deducted from the refund . The only times we don't accept a return is if it is used or damaged by you or if the product is returned incomplete.
If the fault is on us (mixed up, faulty on arrival), we'll pay for return shipping.
You can return a purchase if all of the followings are true:
Refund Requirements:
All of the following conditions must be met for us to issue you a refund (with 20% re-stocking fee deducted):
Free delivery
Free delivery for most orders