Disclaimer: the picture above exhibits a generic entrance teleconverter, for illustration functions solely. There are presently no pictures of the Viltrox teleconverter or wide-angle conversion lens.
In accordance with a Reddit put up from a Viltrox consultant, the corporate will quickly be launching a front-mounted 1.4x teleconverter, together with a 0.8x wide-angle conversion lens. “With these, you possibly can immediately unlock new focal lengths with out altering your digital camera” says the poster.
Sony Alpha Rumors has a useful listing of Sony lenses and what focal lengths may be achieved had been you to connect the teleconverter or vast conversion lens. Nevertheless, take this with a pinch of salt. Any front-mounted lens adaptor will in fact be designed for a selected filter thread diameter, so it will solely match appropriate lenses. Moreover, you in all probability will not be capable of use a front-mounted teleconverter on a lens with a focal size wider than about 85mm, as relying on the bodily depth of the converter, it’d probably trigger apparent vignetting if fitted to a wide-angle lens. That stated, there’s little sensible motive to make use of any type of teleconverter on a lens of a short-to-medium focal size, when the purpose is to maximise telephoto attain.
It stays to be seen what sort of impression these conversion lenses could have on picture high quality. I’ve lab examined bona-fide rear-mounted 1.4x and 2x teleconverters from Canon, Nikon, Fujifilm and Sony for our information to one of the best teleconverters, but even these high-profile choices nonetheless noticeably scale back picture sharpness and improve chromatic aberration. I stay to be satisfied {that a} (presumably) low-cost front-mounted teleconverter can present acceptable picture high quality and will not detrimentally scale back the efficiency of the host lens.
We await particulars of pricing and availability for each Viltrox conversion lenses.