What are your favourite lenses, and why are these lenses special to you?
Here to hopefully start the ball rolling, these are my choices, both past and present.
Starting back in the film era, the Tamron 300 2.8 was my standard jazz lens. I still have it as it it is too battered and bruised to have nay meaningful SH value. I could not afford the original Nikon 300 2.8. This lens allowed me to get photographs, that I believe I have never bettered. The lens was constantly set to 2.8
Another old lens I valued was the Nikon Ai 180 2.8. This was my dance and theatre lens. It was considered to be bery good optically in its day
When I used M43, the Panasonic 100-300 was a favourite lens that let me do really long lens pictures without al the bulk of a larger format lens. The little 12-35 2.8 was another favourite. I was never interested in the bulky heavy Olympus 2.8 zooms. The Olympus 7-14 was one of my biggest purchasing mistakes.
My current favourite lens is the Nikon 24 PC. This lens really opened up the world of architectural photography for me. It also has a rendering that none of my other lenses can match. It is my most used Architectural photography lens.
A few weeks ago I would have put the Nikon 24-200 here, not for any optical merit, but for the sheer usefulness and practicality of this lens. The 28-400 has replaced the 24-200 as a generally practical lightweight option for travel and hiking. It is also good for architectural details. Coupled with the 14-35, I have a huge range of FL options that fits into my little rucksack when I hike in the mountains, or do some casual tourism. It also helps to keep the weight of my camera bag down when I do a Architectural photographic expedition with my shift lenses. For details the 400mm long end help cut down of keystone distortion
All my choices are about the usefulness of a certain lens and how it allowed me to do things I could not do before. Sharpness and other optical factors have never been paramount in the choice of a favourite lens.