Walimex 500/6.3 DSLR Mirror Samsung NX

Typically, a long focal length of 500 mm is housed in a 500 mm long casing. To achieve a handy, versatile, and compact solution, a trick has been applied in this lens. The light path is folded using two high-precision ground ring mirrors. This results in a compact design and an aperture that is more than 50% larger than that of a lens with 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 in aperture priority or manual mode, depending on the camera. Technically, it is not possible to insert an aperture blade into the folded light path. If light reduction is required, this can be achieved with gray filters (not included) that screw onto the rear of the lens. There is an M34x0.5 thread for this purpose. The lens does not have a fixed infinity stop. Focusing is done oscillating, securely finding the focus point from out of focus to sharp and back to out of focus.

For the T2 connection, the T2 adapter is screwed onto the optics, and then the lens is locked in place. After loosening the side screws on the T2 adapter, the lens can be aligned straight to position the index upwards. Retightening the screws reliably secures the lens and the adapter.

The advantages of a full-frame lens on a camera with an APS-C sensor include time savings in post-processing. Many lens errors such as distortions, edge softness, or vignetting occur in the outer areas of the image. Using a lens designed for full-frame on a camera with an APS-C sensor means that these areas are not utilized, resulting in maximum quality. Additional post-processing time for correcting lens errors is therefore not necessary.