Probably that is why they recommend it. It is not easy with my 200. I wonder what those people with a 500mm lens and a 1.4 TC do? 115 feet. I don't think my lot is that deep and I'd have to move the garage over.
Hey lady. Sorry about the the tripod in the back lane. Can you go the other way today? I guess I better stop saving for one
I know Lens Align and a few others recommend a minimum of 25X. Not sure what Focal recommends.
Or, how about the 600 + 2x?
I'm still curious as to the 'why' of that distance.