In reply to balmybaldwin:
I have used both home made bag and off the shelf versions and they both work well. First of all, all waterproof kit makes your camera a pain to use. Home made kit tends to be an absolute faff to put on so only really works well if it’s put on the camera in the hotel first anticipating rain, the benefits are that you can completely customise it to your own needs, it’s also very cheap. Off the shelf kits are much easier to whip on or off, but to get versions that are user friendly means going up the price range, they tend to be much more robust.
We now use the think tank hydrophobia. The one in the link below fits my Cannon 5D mk IV with an 1.4 extender and 100-400mm fitted( with shade at max extension) as well as my smaller lenses and 70D. It’s never failed me in driving rain, blizzards, and sand I get when doing wildlife photography. The extra eyepiece needed can be bought for a fraction of the price if you hunt out generic brands.
https://www.wexphotovideo.com/think-tank-hydrophobia-70-200mm-lens-rain-cov...
Post edited at 23:31