Okay, I have been ALMOST but not quite as bad as Guy when it comes to lenses.
I've finally started trimming back to what I really use and also like from the ergonomics, size, and rendition.
My kit has finally shaped into the 28 Cron ASPH, 35 Cron ASPH, 50 Lux ASPH, and 90 Elmarit for the M8.
The only one which is still on the blocks is the 35 Cron ASPH as this is my least used lens, and for which I would trade out in a heartbeat if I could have a 35 Lux ASPH that did not focus shift between 2.0 - 5.6 aperture. The 35 Cron can be just a little too contrasty for me still. The 35 Cron IV has strange or Nocti type "bokeh" at times which I just don't get along with. The 35 Biogon is nice from the standpoint of rendering but is even more contrasty than the 35 Cron ASPH. The Summarit has a fingerprint that I have trouble describing but leaves me still preferring the Cron. Leica please reformulate the 35 Lux ASPH so that it does not have the focus shift.
The funny thing about my lens choices is that it is basically still the same as it was on film. I still like the same lenses for the same reasons as I did before. I just adjust to the crop factor by being a couple steps farther away than before.
The 28 Cron is a marvel in how well it handles everything. The 50 Lux is truly what I think to be the best 50 in existence. The 90 Elmarit renders sharply but smooth, which is exactly what I want out of a 90.
The 90 Elmarit ended up in the bag after buying it from Guy, when we were shooting both it and his 90 Cron ASPH together. I found that I liked the handling of the Elmarit better, the gear ratio for focusing was easier for me to snap things into focus, the Cron only has a marginal sharpness edge at 2.8, I don't need the 2.0 or size in a 90, and I preferred the smoother rendering of the Elmarit.
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The WATE is a nice lens but is going away as I don't really need all three focal lengths, the cost, the huge but excellent finder, and I REALLY want a faster wide prime for interior work. (A fast 16 on the M8 or a fast 21 on a FF would be ideal for me.)
The 75 Cron is another marvel based on its brother the 50 Lux, but I prefer the 50 focal length so it got virtually no use. 75 is in between for me, so I tended more towards the 50 or the 90. The other issue I had was the 75 frame line inaccuracy and also being so close in the VF to the 50, just did not work for me.
24 Elmarit ASPH, is another great lens and would have been my choice vs. the 28 Cron if I used the 35 focal length more than the 50. However, I prefer the 28, 50, 90 steps vs. 24, 35, 75 steps. Since, I wear glasses the 24 is also difficult for me to see on the M8.
My next logical step down from the 28 is a 21, for which I'm trying out the Zeiss 21 4.5 C Biogon. It is mostly seeing duty on film with the Zeiss 21 mm finder. 21 is wider than what I normally shot in the past, but is turning out to be very useful. This lens is also killer sharp, virtually no distortion, and compact. However, it is slow. To use it on the M8 is a PAIN. The mount is wrong and must be changed by Zeiss as this one requires recalibration when changing. That leaves a problem of how to code it with anything other than markers. I have been using it on the M8 with Cornerfix.
I'll skip mentioning all of the other Leica lenses that I have owned over the years on previous film Ms.
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So at the moment, I'm happy with my lens line-up based on what is currently available.
However, I would really love to see a reformulated 35 Lux and 21 Cron ASPH. Those I would trade up into, in a heartbeat.
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Best,
Ray