Zooms that start at 20mm are amazing. Literally two lenses in one. The CR's cropping with the 20-70s wonderful range sounds amazing.Good to know.
Size is a factor. But focal length is more so for this lens. In Greece, I had the 8-25 & 12-100 f/4 Pros with 20 f/1.4 Pro. There are about 30 images I like that fall into the 21-70mme range. Beyond 70mm maybe 5-6 images would be impacted by cropping with only 1 or 2 that I would have had to cropped below APSC.
Given the aspect ratio 4:3 vs 3:2 I might get away with 20mm on the wide end. I do have a couple dozen shots at 16-18mme, but many had a little cropping or wouldn't be impacted by a little.
The Tamron 24mm will probably be my first lens.
in blue English, en noir en Français All photos , taken with Sony A7RIV are available in full size (61Mpix) in the following Flickr album : Tamron 24mm F2.8 AF Toutes les photos de l’article,…sonyalpha.blog
If I go for a telephoto it would probably be the Sony 70-200 f/4 macro. It's about the same size as the Tamron 70-180mm f/2.8. The Sony is just a little smaller/lighter and with the grip on the A7CR, it should be fine. I got to play around with gripped A7CR and the Tamron 35-150mm, that thing's a beast.
If I were still shooting events it would have to be dual slots. As for the EVF, I enjoyed the Fuji X70s I've owned and enjoy my E-P7, neither have EVFs. I'm also not sure how far off the A7CR's EVF is from the E-M1.2 I had. Having an EVF is good, but how good it is or isn't has never been a issue for me.
I've swapped out my fast 35 prime for the 40mm 2.8 end of the Tamron so it's doing triple duty for me.
When I had a C, I used the EVF very little, relying on the effectiveness of the AF. When I did, I found it work just fine. Just thought I'd mention the 7R5's EVF since it's fully spec'd out.