2020年10月20日火曜日
Acquired close up capability on M Summilux 50/1.4 2nd
2020年10月11日日曜日
Leica M Summilux 50mm/1.4 on Hexanon 52mm/1.8 helicoid
Not a few photographer might feel some inconvenience to make use of old range-finder camera lens on recent digital mirror-less format, because of lack of close-up capability. For example, most of Leica M lenses were so made to focus up in the range of infinity and 1 m, the nearest position for the standard lenses are not enough especially when used on a recent designed digital camera body. Ordinary 50 mm lenses produced for SLR in silver salt period have 45 cm close up capability, there exists some big difference between them for usual conveniences. The same opinion could be declared on Leica M Summilux 50 mm/1.4 second generation. It is true that it could be used on SONY E-mount body without any Physical problem except the close-up capability. On the other hand, the possibility to brought out side is reduced because of the dictated problem.
I caught my eyes on the fact that the lens module including iris construction and helicoid mechanical moving part can be separated, then, what will happen if the module could be put in an another helicoid mechanism with close up possibility? Just conveniently could I obtain Konica 52 mm/1.8 SLR lens at only 1 yen from Yahoo auction, my idea should be realistic at all so I determined. The helicoid extension of Konica 52 mm is 45 cm and Summilux lens module is acceptable diameter with the least modification on Hexanon lens case.
I must declare here why I insist on Leica M Summilux 50 mm/1.4, it is the extraordinary correction of spherical aberration, S shape curve correction is done between 1.4 and 2.0, this method has not be came across with in the field, no other one has such a way like this lens. Of course Summicron has outstanding character in any performances, sharpness and resolution, but if the title comes to "lens taste", my ranking is changed immediately, Summilux 50 mm/1.4 is the second to none, especially on the resolution of atmosphere at the moment. According to my long lasting distinction on that, I came to the conclusion to proceed to operate on this case as a matter of fact.
Because my Leica M Summilux 50mm /1.4 has acquired the capability of close-up shooting 45 cm at the minimum distance, I will make it a rule to bring out whenever I do it keeping it at the corner of my C-bag.
2020年10月1日木曜日
Standard lenses I'm keeping
Not a few standard lenses are here, all of them can be applicable on SONY E-mount. I got stuck in a swamp of lenses for about 2 years recently. Some of them were produced over 30 years ago and another were done more than half a century ago. Thank to the development of the technology in Digital Imaging sensors, we can see their Physical capability at that time so clearly on our LCD, it's a great fun for me at all. Utilizing our Digital camera as a Lens Optical measuring equipment, so apparently we can see the performance in stead of some expensive dedicated experimental equipment. Every produced lens product has their own character that differs each other.
On the other hand, recent lens production has the least disadvantage reducing lack of edge light source, resolution and sharpness with some high price. Lens Baby is a extraordinary character to show far inferior edge resolution, this is an intentional design. The specific design to reproduce only the central area is the way to be invited by some photographers for consolidation of central area in the picture.
As for my own opinion, concepts that form the basis of lens design had been established over 50 years ago and they are prevailing even now. I have no idea to purchase high priced lensed produced recently.