Nikon DK-17M magnifying eyepiece for Contax RTS III and AX !!!

The DK-17M is bolted to the Kameraokular and enlarges the viewfinder image by a factor of 1.2. Here one must not expect miracles. Nevertheless, the use of the DK-17M brings a noticeable improvement when focusing from Manual Focus lenses, such. As those of Zeiss. Especially on the D800 which is useful because there is still no frame lenses with focusing aid as average picture Stretcher and microprisms. But even stand on cameras for such field lenses available such. As Nikon F6, assessing the adjusted sharpness is further improved.
People wearing glasses will possibly can no longer see the whole viewfinder image to the outer corners. But the eyepiece rubber jacket and you can close rangehen to fear on the glasses without scratching even with glasses. The rule is: just try and occasionally clean the glasses when you were with the eye too close to the glass.
I use the magnifying eyepiece on my Contax RTS III. The original Gummieaugenmuschel must remain as a spacer on Kameraokular. Only the bolting Unscrew and screw the magnifying eyepiece firmly. The metal adapter from the DK-17M should not be omitted, otherwise the rubber coating of the eyepiece can be lost! The magnifying stands, due to design, a piece on the camera body beyond what could slung around his neck, possibly disturbing when worn. Here a compromise is to respond - as so often in life. Mir is the gain in setting accuracy worth it and I'm glad that such a remedy is available. Therefore, five stars.