What's your dream lens

[Mendolera]

300 F2.0L

[crasher8]

EF 200 f/2

[Zv]

I'd like a 16-135 f/2L with hybrid IS and a some kind of laser assisted USM that can AF in a black hole if needed.   

[K-amps]

EF 50-250mm f/2L  I would be willing to spend about $4500 for it.

All I would need is a couple of TC's and a UWA and I am all set.

[ScottyP]

A 50mm lens at f/1.4 or f/1.2 which is sharp at wider than f/2.  Can be metal or plastic.  Weather sealed or not.  Image stabilized would be nice, but not necessary.  EF mount.

And here comes the dreaming part: 
No more than $500.00 (the price of the Sigma 50, which is not especially cheap).

[AprilForever]

600 f2...

[picturesbyme]

10-500mm f/1.2 IS II in the 24-70 size around $100
..at least this was my dream lens, then I woke up...
 

[Zv]

Seems like f/2 is the new f/2.8, how long before we see an f/2 zoom? Has it ever been done? Is it feasible?

[sdcoffey]

8-600 f/1.0L

[picturesbyme]

Seems like f/2 is the new f/2.8, how long before we see an f/2 zoom? Has it ever been done? Is it feasible?

Oly.. but that's 4/3rds so....
http://www.adorama.com/IOM35100.html?gclid=CNDRh5CggbQCFQSf4AodJ3kAyA
..still, Zuikos were/are pretty awesome quality..

[EYEONE]

I know this probably seems crazy but I wouldn't mind seeing some zoom ranges between the 24-70 and 70-200mm. Maybe a good 50-135mm f2.8L or f2.0

I'd also like to see some wider aperture zooms. I'd  trade zoom range for light any day. Maybe a 24-55mm f2.0L or even 24-55mm f2.0-2.8L.

[michi]

22-90mm f2.4 IS

[Ricku]

14-24L - Razor sharp across the frame.

or..

16-35L III - Razor sharp across the frame.

or..

17-40L II -  Razor sharp across the frame.

Point is: I just want a razor sharp wide angle zoom from canon, specifically designed for landscape photographers. Is that too much to ask for? 

[candyman]

I'd like a 16-135 f/2L with hybrid IS and a some kind of laser assisted USM that can AF in a black hole if needed.   

this

[Zv]

Seems like f/2 is the new f/2.8, how long before we see an f/2 zoom? Has it ever been done? Is it feasible?

Oly.. but that's 4/3rds so....
http://www.adorama.com/IOM35100.html?gclid=CNDRh5CggbQCFQSf4AodJ3kAyA
..still, Zuikos were/are pretty awesome quality..

So the depth of field would be more like f4 on full frame? I Wonder if Canon would make an f2 EF-S zoom? Maybe the rumoured 17-55  replacement?