Kinebohのブログ一覧

Whenever I come across with some reports or impressions on old lenses especially made by Ernst Leitz Solms GMBh, I mourn and lament. The condition of object are not always well settled and maintained, they were not estimated their original and innate capability and potentials.
Mold and dust particles causing cloudiness and peeling of the edge lacquer can lead to poor image quality and the occurrence of flare and ghosting.
Consequently, we should restore them as original condition if we try to know their potentials fairly, of course the best care must be paied especially not to wipe out delicat and sbtle coating layer---difficult for layman.
The subtle differences in spherical aberration correction should be discussed under fair and correct establishment of any conditions. It is not an area that amateurs can easily enter.

Cold air pressure comes down from the Western Continent and cold weather are lasting in our country these days. On frozen road surface must be paid attention. Once start to slip all the vehicle fall into uncontrol.

My photo shooting hobby is inhibited this coldest season. Newly obtained equipment, Elmar 90mm/f4.0-Black lacquer painted no coating, Summitar 50mm/f2.0-square iris shape and M Rokkor 40mm/f2.0-similar with Summicron M 40mm/f2.0.

When it get warmer and the flowers bloom, things get busy.

Raised edge on edge painting causes reduction of resolution especially in lower frequency. Half a century after its production might such a change over time. Silver circle is observed the phenomena, just removing original painting without hesitation however looked no problem. New black painting will show you apparent improvement in image quality especially when iris is fully opened. Then a bad reputation because of Whitening image would be thoroughly wiped out as a matter of fact.