Agreed that lens gathers the facts.

Thanks for your reminder. However, too many images to fit. I think the maximum is 8?

Ricoh GXR with A12/M
12MP, 23.6x15.7 mm CMOS (1.5X), no AA filter, mirrorless, view finder extra
Carl Zeiss Biogon ZM 25mm/f 2.8 – with Leica M mount

The specular reflections in the B & W image are from a chandelier.

This completes the set captured using the Ricoh.

Ricoh GXR with A12/M
12MP, 23.6x15.7 mm CMOS (1.5X), no AA filter, mirrorless, view finder extra
Leitz Summicron Symmetric IV, 35mm/f 2.0 – classic M mounted for Leica RF

The last two were in camera HDR captures (-4, 0, +4) used in-part to minimize noise in shadow areas. The last was taken next to the Peace Columns across the Invalides towards the Eiffel Tower. There stands a number of plexiglass panels with the word “PEACE” etched in all the written languages. The macro lens is at minimum focus, 1:1 magnification, hand held. During the three exposures, the color lights were constantly changing. The iris is composed of 11 curved blades so that the aperture is nearly a smooth circle projecting smooth bokeh. Given the distances involved, the lights all should appear as individual overlapping circles across the entire frame. There is notable fall-off near the bottom and to the right edge of this frame. This is a high resolution but soft lens with a reasonable uniformity across the field, edge to edge.

Ricoh GXR with A12/M 12MP, 23.6x15.7 mm CMOS (1.5X), no AA filter, mirrorless, view finder extra Using Kern macro Switar + Kipon Alpa to M mount, usually f5.6-f3.5

will post when ready

After reading and commented on a posting on lenses, Leitz vs. Zeiss, which is better? I thought of continuing the discussion from a different direction.

There have been numerous postings asking advice on the choice of a camera by beginners as well as more experienced photographer but few, far too few, about lenses. The lens must see the scene that we wish to record collects and projects the information/analog data on to the film plane to be recorded. If the details and nuances were not resolved by the lens, no amount of post processing will add to ground truth. Post processing enhances the data but cannot create new “facts”, although one can easily remove unwanted details.

The lens and camera sensor should form a partnership, be compatible. For example, it makes no sense to pair a high-resolution lens that can image over 40 line-pairs/mm with an AA filter (OLPF) mounted camera sensor. This low pass filter cuts off the fine details (high frequency) one paid for with the $$ lens then pay again in the camera to remove it!! Remember it wasn’t too long ago we were encouraged to trade-in 1970’s or earlier Zeiss or Leitz glass for digital-ready lenses – I sincerely hope that you did not.

I plan to post three sets of comparisons with images recorded in 12MP, 36MP, and 42MP mirrorless cameras using the following set of lenses:
Kern macro Switar, APO, 50mm/f 1.8 – lens for ALPA SLR, 1975
Leitz Summicron Symmetric IV, 35mm/f 2.0 – classic M mount for Leica RFMP
Carl Zeiss Planar ZM, 50mm/f 2.0 – with Leica M mount
Carl Zeiss Biogon ZM 25mm/f 2.8 – with Leica M mount

All the images were captured in RAW over 10+ years; edited using Lr and/or Ps, Adobe Flat Field correction for Biogon, and Nik plugin for B & W. FYI, no Leica cameras will be included.

Thank you for following the verb age so far, if you think these non-rigorous comparisons might amuse you please comment.
Gkl

Both Leitz and Carl Zeiss are pioneers in optics and their early 20th Century lens formulas; curvature, and placement of individual elements are stilled used today but modified while optical glass and coating technologies have improved by leaps and bounds.
Leitz and Zeiss lenses are designed with different emphasis in mind, resolution vs. acutance. Leitz Symmetric Summicron 50mm and 35mm, has a long history of use for street and news photography. These project a very high contrast (high acutance) image with good resolution. On-the-other hand, Zeiss Planar 50mm has better resolution but a “softer” appearance. Please refer to (cambridgeincolour) where tutorials are offered on optical performance. Sharpness as such, cannot be measured but it is used by many, I am also guilty.
Leitz and Zeiss each have their own particular draw, they have different nuances, it is your choice which suits your taste- difference not which is better.
FYI my collection:
ALPA 9D (SLR) and LEICA M6 (RF) keepsakes
RICOH GXR A12-M; only reasonably price modular digital camera without AA filter. The lens mount + sensor unit are an interchangeable unit. M means Leica M-lens mount and the Sony(?) sensor has a micro-lens layer to adjust for the short barrel Summicron lens and CA at the edges. Unfortunately, no longer manufactured for several years. The seals wear so had to replace.
SONY7aR; full frame and no AA filter, again soft seals wear and had to replace. CA issues with 25mm lens, had to use Photoshop Flatfield correction, a plug-in.
SONY7Rii; replaced Black Friday 2020. Aside from increased resolution, the CA issue seemed to have been resolved with new sensor. Flatfield correction no longer necessary.
Lenses collected since 1974 and continued to be used with adaptors.
Kern Macro-Switar APO; 50mm/f1.8, Meta-bones Alpa to E mount
Leitz Summicron 35mm/f2.0, symmetric IV, Voigtlander M to E mount
Carl Zeiss Planar 35mm/f2.0, ZM, Voigtlander M to E mount
Carl Zeiss Biogon, 25mm/f2.8, ZM, Voigtlander M to E mount
The 25mm Biogon is a special lens, twenty plus years ago it out resolved its siblings as well as Leitz lenses at f5.6.

Ansel Adams started out to be a concert pianist and Charlie Cramer has a graduate degree in piano teaching. Kodachrome process was invented by a physicist and chemist Mannes and Godowsky who were first class string players.

Security detail on a side street in Rome. Alpine female troopers? My grandchildren would love to have these hats for Christmas.

Not really a hat but......... Along the shores of Lake Victoria.

Bai minority people in Yunnan Providence

Here are some in monochrome

(Download)


(Download)




(Download)

This was taken some years ago. It was "easy" to scan. The Blue channel was relatively clean, low noise. I have one remaining 36 exposure roll in the freezer. Will be the last, scanning takes an effort....

The Beagle Channel

Scanned from Kodak Pro-Ektar 100. 35mm.

(Download)