24-840mm zoom

[bopie]

I want a Canon 10-5000mm F1.2 L IS USM

 

[epsiloneri]

I want a Canon 10-5000mm F1.2 L IS USM

In principle, you could build such a lens. Unfortunately it would have to be >4m in diameter.

The longest lens I've used was a 123000mm f/15 IS prime It wasn't either very portable, though (and didn't have an EF mount). The longest lens I've connected to an EF camera was an 11000mm f/11 prime. Biggest IQ limitation was the atmosphere. I probably don't have to add that those lenses dwarf even an EOS 1Ds mkIII.

 

[Jan]

I decided to get Nikon D3100

Good choice!