This might not be news but some might find the video comparison useful.
I know the crop at 4k is a PITA at the wide end, but it can be mega useful at the long end.
Using one body and one lens - Canon 5D4 and 200-400/1.4x - gives an effective "reach" of a 200-1,904mm f/5.6 lens on the 5D4, assuming final output is at 1920x1080.
40,000 ISO comparison here: https://vimeo.com/206155690
Using a Sigma/Tamron 150-600 in place of the Canon 200-400 would give you 150-2,040mm for a fraction of the cost, with more range in a single zoom action but with a 1/3 stop loss (and inferior image stabilisation IMO).
Of course you can't zoom through the entire range in one shot. Still, very useful.
I know the crop at 4k is a PITA at the wide end, but it can be mega useful at the long end.
Using one body and one lens - Canon 5D4 and 200-400/1.4x - gives an effective "reach" of a 200-1,904mm f/5.6 lens on the 5D4, assuming final output is at 1920x1080.
40,000 ISO comparison here: https://vimeo.com/206155690
Using a Sigma/Tamron 150-600 in place of the Canon 200-400 would give you 150-2,040mm for a fraction of the cost, with more range in a single zoom action but with a 1/3 stop loss (and inferior image stabilisation IMO).
Of course you can't zoom through the entire range in one shot. Still, very useful.