Rol Lei Nut

I've heard reports of zoom creep, even when the tightening ring is fully tightened. Have you had any after extensive use?

In my second post from the top in this thread, I gave weights and appraisals of the Canon lenses....

A test like that is pretty much a close range test. At longer distances, the results could be quite different, or even switched!

If you mean the 28 2.8 M-Rokkor, nice lens, but all are affected by the "white spot" problem, unless already fixed. If light, the spots might only lower contrast a little. Even if fixed, some light ...

An APS-C sensor isn't a FF one. People who need to save size & weight can have just as high quality requirements as others. Given a small camera, you can always add grips/battery grips, bolt some ...

Some people have and use very compact lenses, just for those situations where size & weight matter. And, no, going to the gym is not a good solution for carrying overweight equipment on mountain ...

As per my other comments below: The Canon 70-200 4.0 L (non IS) is very good. Extreme corners aren't super sharp at full aperture (though more than usable). From f/5.6 nothing to complain about. Th ...

Have you considered reflections and/or light leaks introduced by a less than perfect adapter?

Canon EF 70-200 4.0 L IS (and probably also the non IS version).

Exactly, pretty good, not great, favored by people for whom convenience & AF speed are more important than IQ.

Just settle for a softer image at 200mm... :-P

f/2.8 or 4.0? How important is AF-C tracking (and on which camera body)? What subjects?

The 6x7 35mm is a Fisheye. The 6x7 45mm is a lovely lens, but I've never used it on formats smaller than 6x7, so can't rate it for that purpose. The last version 6x7 55mm is also stellar.

Have the Zeiss 200 4.0 in Rollei mount, not sure if it's really the same as the C/Y one, though. Mine is a solid very good, but not magical. More or less in the same category as the Nikkor 200 4.0 ...

Horses for courses: it depends on one's individual workflow. I will often set up the camera before bringling up to my eye. See my other answer, it's possible with coaxial dials and combining the ...

5 actually: shutter modes and self-timers can be on the same dial (which could be combined with the on-off switch). Some could be coaxial. The Fuji X-H1 has 4 dials (2 coaxial) and a separate ...

I also took the leap into digital in 2012 with m4/3, with pretty much the same reasoning. But it wasn't my dream camera: I still wanted to use my many film era lenses, keeping their proper field of ...

Dials provide immediate feedback, without looking at a display somewhere else. I also like adjusting from above, not "chimping" the back display. Habit, and it can also be more discreet. A back ...

Lesser sensor, no IBIS, no built in EVF, outrageous price. But I would love it if Sony "copied" the M as far as format and the control layout are concerned.

Eliminate the hump, but not the EVF (aka "rangefinder style"). Makes it a lot easier to put and remove the camera from the bag.