I hope Canon comes out with a RF 40mm. When I had micro four-thirds the 20mm f1.7 was one of my favorite lenses. I like the balance of slightly zoomed in from the 35 and a good bit wider than the 50. I forgot all about the 24mm they came out with, I need to check it out. I’m done buying lenses for a minute though.What's funny is that my pancake 40 was my favorite lens on my 5d3, but not so much on this R8, which is tiny in comparison. I think i need lenses on it that extrude a little more. I placed my control ring adapter on it the other day to simulate a pancake and it didn't feel very comfortable to me. It did feel damn near perfect however after I attached the 40mm to it. I'm actually leaning towards picking up the 24mm 1.8 for this this upcoming trip to use as a nighttime street lens. The wider fov, speed and image stabilization will probably trump the form factor of the 28 during this trip for me.
The 14-35 balances really well without any grip issues for me, but I do have a JJC extension plate coming in the mail for it right now just to try out. I like the fact that it gives the body a touch more real estate, as well as including a built-in arca tripod mount, which the canon ones don't. I am returning a knock off version of the JJC to amazon today as the pinky part is a bit more vertical and dug into my finger if I held it too tight. The jjc also includes a folding strap attachment point which I like along with the cold shoe portion being flush with the body unlike the amazon version. I also like that this plate sits the camera flat which some of the others do not. The JJC is a half ounce heavier and a smidge shorter from what I'm looking at the spec sheets posted online fwiw.
Here's the plate:
Product Description – JJC
www.jjc.cc
Looking forward to pictures from the trip if you end up wanting to post any.