Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Canon Lenses

Thread Tools Search this Thread
Old Apr 17, 2008, 11:54 AM   #1
Senior Member
Join Date: Oct 2004
Posts: 278

Is it possible to make a lens of this type. As a example lets say 70-200mm f 2.0. or is this type of lens technically impossible or financially not worth it for most users, hence no finacial gain for Canon, Sigma, etc... thanks
garman is offline   Reply With Quote
Sponsored Links
Old Apr 17, 2008, 12:02 PM   #2
Join Date: Jun 2003
Location: Savannah, GA (USA)
Posts: 22,378

In general, an f/2 zoom is going to be too large to be practical.

Olympus is the only manufacturer with f/2 zooms for DSLR models right now. But, it's a bit more practical to do this with the 4/3's system cameras (since their sensors are smaller than the APS-C size sensors found in competing DSLR models, a lens doesn't need to project an image circle as large to cover it).

This also makes lenses appear to be longer. For example, a 35-100mm lens on an Olympus dSLR would give you the same angle of view you'd have using a 70-200mm lens on a 35mm camera (multiply by 2x to see how they compare).

Here are listings for the two f/2 zooms for these cameras (the 14-35mm is not yet in stock with most vendors in the U.S.).

Olympus Zuiko 14-35mm f/2 listing at B&H for $2299.95

Olympus Zuiko 35-100mm f/2 at B&H for $2199.95

JimC is offline   Reply With Quote
Old Apr 17, 2008, 6:18 PM   #3
Super Moderator
Mark1616's Avatar
Join Date: Oct 2005
Posts: 7,451

Possible, but not plausible or really valuable.

Weight is going to be really silly for such a lens. Let's take a look at the closest comparisons we can get.

Canon 200mm f2.8 = 800g

Canon 70-200mm f2.8 (non IS) = 1300g

This makes the zoom 62.5% heavier. Now I'm not saying this is a hard and fast percentage but a zoom is always noticeably heavier than a prime.

The new 200mm f2 from Canon is 2520g so if it where the same % to take to a zoom then we get to 4095g not light. Then we get to price....... are you sitting comfortably?? I wouldn't like to guess but I wouldn't be surprised at $12,000+

There is only a very specialist market for the 200mm f2 let alone a zoom at f2. Not saying it wouldn't be nice just not likely.

Mark1616 is offline   Reply With Quote
Old Apr 17, 2008, 9:38 PM   #4
Senior Member
Join Date: Oct 2004
Posts: 278

Yeah thanks guys. I was looking at the weight of the Zuiko lens. The 35-100 is 1650g, can only imagine if that was 200mm. The weight of the lens does not bother me, but the obvious price is a death sentence for my mortgage payments. But they do exist, the 35-100 would be a dream in my camera bag.
Thanks Jim and Mark
garman is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 12:16 PM.