LHSebi From Germany, joined Jan 2004, 1049 posts, RR: 9 Reply 13, posted (8 years 7 months 6 days 7 hours ago) and read 4201 times:
"Canon technician Seiji Matsushita observes life on a distant planet. Throwing aside all inhibitions, we've added a 2x extender, which you can see between the back end of the lens and the EOS adapter. This doubles the effective focal length to a 35mm equivalent of 17280mm, yes, there are five digits in that number, which of course is utterly insane."
17,280mm...What the hell would you use that for? Portraits of the astronauts on the ISS? Crazy!
I guess that's what happens in the end, you start thinking about the beginning.
Maiznblu_757 From United States of America, joined Mar 2002, 5112 posts, RR: 52 Reply 16, posted (8 years 7 months 6 days 6 hours ago) and read 4125 times:
The biggest I have seen is the Canon 600mm F/4L IS.
If all goes well, I will be owning the 500mm F/4L IS by the end of 2005, with a 1.4x extender. Might even go for the 2x. (1400mm) I think it would be pretty sweet to shoot High flyers on a cold, clear Michigan winter day (Tripod obviously)
Photopilot From Cuba, joined Jul 2002, 2439 posts, RR: 20 Reply 18, posted (8 years 7 months 6 days 3 hours ago) and read 4008 times:
The biggest I've ever used (or seen) as a single prime lens, no extenders is the old Nikon 2000mm f:11 Mirror Lens. It's a big slow lens from long before the time of today's fast ED glass. But what a monster and the one thing that is amazing about using mirror lenses is the "doughnut" shaped spectral highlights. Awesome.