I'm definitely hoping that it gets replaced with a 400mm f4 IS lens at an affordable price.
I realise that both the 400mm f2.8 and 500mm f4 are really expensive, but the 300mm f4 is under £1000, so shurely a 400mm f4 could be made that isn't that expensive.
A 400mm f/4 will be about the same size and weight as a 300mm f/2.8, unless it is a DO version, which is already available at an even higher price than the £5000 300mm f/2.8. So, I don't think a 400mm f/4 will be cheap.
If Canon is going to make something the size of 400mm f/4, my dream would be a super sharp f/5.6 500mm as a lightweight supertele that could combined with 1.4xTC.
« Last Edit: December 27, 2013, 08:41:20 AM by AlanF »
5DS R, 7D II, EOS-M, Powershot G3 X, 300/2.8 II, 1.4xTC III, 2xTC III, EF 1.8 STM, EF 70-200/4 IS, EF 24-105, 15-85, 100-400 II, Sigma 10-20, Sigma 150-600mm C, EOS-M 18-55, f/2 22, 11-22