Pro-Optic Multi-Coated 2x Tele-Converter for Maxxum and Sony Autofocus SLR Cameras.

Pro Optic
Pro Optic : Picture 1 thumbnail Pro Optic : Picture 2 thumbnail Pro Optic : Picture 3 thumbnail

About Pro Optic

Placed between the camera body and lens, a teleconverter contains a set of optics that will effectively increase the focal length of a lens by a factor of 2x . Pro Optic converters are made with high quality multi coated optics and designed to electronically operate with the camera contacts. Designed specifically to be used with prime or zoom lenses of 100mm or above. 2x will increase a 300mm into 600 mm and will decrease the lens with 2 f/stop. Focusing manually is recommended when using a lens with a f/stop of f4 or slower. Longer exposures will require a tripod for stabilization
Quality optics Made in Japan.

Summary of Customer Reviews

Customers most agreed on the following attributes:
Durable (4)

Pro Optic Features

  • 4 Elements Multi-coated optics Made in Japan

Reviews about this item

Reviewed by 4 customers


Great piece for the price.


from Pittsburgh  -  Semi-pro Photographer

Have been using on scenery and wildlife as well as shots of the moon. It won't autofocus above 2.8 but has given a nice added bump to focal length of my lenses.


produces an ok picture.


from pontiac mi.  -  Casual Photographer

i use it to extend the range of my's easy to attatch,and solidly built.with careful focusing you get some sharp pictures.does not work in af with lenses that have an af switch. best used with these lenses in manual.does cut down the light on cloudy days.because i only use it on sunny days that's not a problem.there are better on the market but, this one does ok.

(2 of 4 customers found this review helpful)


auto focus dont works in most lens


from Danville, VA  -  Semi-Professional

The product is good quality and come very complete, is easy to install and works, but the main issue is the autofocus is void if your lens is 4 or higher, that means that only work if your lens are very light, and if you have expensive lens probably will not need converter. It is good for take pictures to static things.

(3 of 3 customers found this review helpful)


Good and easy TC for Sony Lenses


from Helena, MT  -  Hobbyist/Enthusiast

Takes a little getting used to using. So far all OK. Works well on the Sony 500 Reflex lens. Alpha 100 and the Alpha 350.


Questions & Answers Powered by TurnTo®

Questions about this item:

Shopper  I have Sony A330. I Wang to use this teleconverter for my Tamron AF 70-300 mm F-4-5.6 Di LD Macro 1:2 A17 and also for Pro-optic 500 mm F8 Mirror Lens. Please confirm if I can use this teleconverter for both the lenses? I am ok with manual focus! Thx in advance.
ARTHUR C. TEDES I  This teleconverter is specifically designed for Sony a-mount lenses, and I use it on my a700. If your Tamron and Pro-optic lenses are also a-mount, and used on your a330, then I would think everything will be fine. Just FYI, I tried using it on my Sony f8 500mm lens, using manual focal. Two things to consider. First, you'll lose a full f-stop with the 500, thereby requiring optimal lighting conditions. Second, the lens is very "unforgiving" with regard to the focus. It has to be dead-on for a decent picture, which is difficult because of the extremely shallow depth of focus. Especially at 2x lengths. Sony just came out with a new 500mm lens, f4, with a retail price of about $13,000. That's right, I said $13,000! We can dream, can't we? Good luck, Art
jeff p  will this converter work on the sony alpha dslr translucent camera ?
ARTHUR C. TEDES I  I wouldn't see why not. I use mine on the a700, and as long as you have a Sony A mount lens, it should be fine. I also use it with the Minolta a-mount lenses on the Sony camera, as well. Hope this helps.
douglas w  will this fit a sony a900?
RICHARD I  I used this adaptor successfully on my a55, so I have every reason to believe it would work on an a900. I used it with my Sony 70-300G and 70-400G lenses and frankly felt that it was not really useful. It would not autofocus reliably, and the results (with the excellent resolution of the sensor in the a55) were such that, frankly, cropping without the teleconverter produced sharper and better results than with it. I would expect the a900 results to be similar, but more so.
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