Upcoming Easter Holiday Closing

Our office will close in observance of the Easter Holiday from Friday, April 18 through Morning, April 21. We will resume on Tuesday, April 22.

Place your order by Sunday, April 16 in order to ship before the Holiday.
Orders placed after this time will be processed when we reopen.

We apologize for the inconvenience and appreciate your patronage.

Mounted between a mirrorless camera and a SLR lens, Speed Booster® increases maximum aperture by 1 stop (hence its name), increases MTF and makes lens wider by a factor of 0.71x. Optics designed by Caldwell Photographic in the USA (patent pending).

Sony NEX Speed Booster® Adapters are NOT fully compatible with full-frame Sony A7 or A7R. When the Speed Booster® are used with Sony A7 or A7R, the camera is required to be used in the "APS-C Size Capture" mode.

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