Walimex 500/6.3 DSLR mirror Sony E

Normally, a long focal length of 500 mm is housed in a mount that is also 500 mm long. To achieve a handy, universally applicable, and compact solution, this lens employs a clever trick. The light path is simply folded using two high-precision ground mirrors. This results in a compact design and an aperture that is over 50% larger compared to a lens of the same focal length, as well as a very short minimum focusing distance of just 2 meters. Focusing is done manually. The lens can be used with either automatic exposure or manual exposure settings, depending on the camera. It is technically not possible to incorporate an iris diaphragm into the folded light path. If light reduction is necessary, this can easily be achieved with neutral density filters that screw onto the rear lens. There is a thread M34x0.5 available for this purpose. Practically, the lens does not have a fixed infinity stop. Focusing is done by swinging the focus point from out of focus to sharp and back to out of focus to find it reliably. T2 connection, operating tip: The T2 adapter is screwed onto the lens, and then the lens is locked in place. The side screws on the T2 adapter allow for the lens to be uprighted after loosening, aligning the index upwards. Retightening the screws secures the optics and adapter reliably. Advantages of a full-frame lens on a camera with an APS-C sensor: Save time in post-processing. Many lens errors such as distortion, edge softness, or vignetting occur at the outer areas of the image. When using a lens designed for full-frame on a camera with an APS-C sensor, these areas are not utilized. Thus, you achieve maximum quality, eliminating additional post-processing time for correcting lens errors.