Minolta MD to SONY E helicoid adapter

Minolta MD to SONY-E lens mount adapter arrived from Taiwan 3 weeks after ordering

There was concern about backlash and backlash generated from the interな helicoid structure, but it was unexpectedly small and within the practical allowable range.

It's like a dream that a standard lens that he can only approach up to 45 cm will allow him to shoot up to 1/2x like a macro lens.

In particular, the 50mm standard lens is carefully designed with the technology that can be possessed, so the effect of spherical aberration due to the lens barrel extension is not seen, and images that can withstand practical use can be obtained.

Since the reflective surface of the incident light was seen on the inner surface of the adapter, a brushed non-reflective cloth was attached.

Then, when the reflection state of the incident light of MD Rokkor 50 / 1.4 was investigated, he found shiny reflection on the inner surface of the spacer of the rearmost lens of the Gaussian rear group. I pasted a brushed non-reflective cloth and assembled it. In addition, black coating work was done on the circular surfaces for all the lens element.

The reflective surface existing in the lens incident light path should be removed without any good thing other than the generation of light noise that interferes with the image with good omission.