2013年1月22日火曜日

Unexpected result



Basically I have been looking down on the physical performance of any variable focus length lenses, but my persistent perception was overturned with some regret on my own smug perceived notion.
Minolta MD ZOOM 35-105 was used as a control when two 200 mm TELE Photo lenses were test shot yesterday comparing the resolutions and sharpness under various iris opening conditions.
The Macro adjusting ring on MD ZOOM lens was not set at correct position by mistake, then I could recognized some incredible performance of the property. Further experiments and researches should be done from now, how this unexpected had been obtained. Depending on the future courses, more research subjects might be necessary with various covering ranges.

By the way, the ZOOM picture is shot by ancient Elmar 50/3,5 at 5,6 aperture with modification adopting on Canon EOS Digital mount. 11,5 mm anterior extension utilizing original lens barrel made it possible to close up till 1/4, as the lens element of this lens positions at relatively frontal position, this kind of unusual modification is possible on a SLR camera body.
Though irreversible modification is done on this historic work at art, but I didn't do this intentionally. This lens had been thrown away into a trash in some Leica shop because of distorted frontal identification flange by falling down by mistake, so I picked it up and survived marvelous Elmar as a lens that can work in the modern world. So, I should not be in impeached but be praised as a good craftsman. I'm not a person with shallow thoughtful nor without common senses.

0 件のコメント:

コメントを投稿