Free Shipping on ALL Products
camera reviewsbest cameraslens reviewsphotography tipscamera forumvideo toursphotography bookssupport me
It is currently Fri Aug 22, 2014 10:35 am

All times are UTC




Post new topic Reply to topic  [ 5 posts ] 
Author Message
PostPosted: Tue Apr 17, 2007 6:05 pm 
Good Evening

I been planning to take the plunge and upgrade from the kit lens (that I mastered haha)

I am just wondering how this lens would respond/work on a XTi body

Canon 28-135/3.5-5.6 IS USM

1.6xcrop factor on it ?

I can get it used for 400$ canadian, which I think is a decent deal.


Top
  
 
 Post subject:
PostPosted: Tue Apr 17, 2007 9:18 pm 
Offline
Site Admin
User avatar

Joined: Tue Nov 08, 2005 3:32 pm
Posts: 9975
Location: Queenstown, New Zealand
Hi jimmy, well you've hit the nail on the head - multiply the focal length by 1.6 times and ask yourself if it's the right range for you.

Personally speaking, it wouldn't be wide enough for me, but many people aren't bothered, or would supplement it with a wider lens...

Gordon


Top
 Profile  
 
 Post subject:
PostPosted: Wed Apr 18, 2007 9:22 pm 
thanks for the reply, I hate to ask a silly question, but I just dont know the answer to. Does the kit lens have the same crop factor ?


Top
  
 
 Post subject:
PostPosted: Wed Apr 18, 2007 9:26 pm 
Offline
Site Admin
User avatar

Joined: Tue Nov 08, 2005 3:32 pm
Posts: 9975
Location: Queenstown, New Zealand
Hi Jimmy, yes, the crop factor is applied by the DSLR itself becuase of the size of its sensor.

So the 400D / XTi will effectively multiply the focal length of ALL lenses attached by 1.6 times. That's why you need a lens with a focal length around 17 or 18mm in order to deliver a wide angle that's equivalent to about 28mm.

The situation's the same with most other DSLRs too though, except they generally have 1.5x factors. Nikon, Pentax and Sony all have 1.5x factors.

Four Thirds DSLRs like the Olympus models have 2.0x factors.

Gordon


Top
 Profile  
 
 Post subject:
PostPosted: Thu Apr 19, 2007 5:21 am 
Thank you very much Gordon !


Top
  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC


Who is online

Users browsing this forum: Bing [Bot] and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  

All words, images, videos and layout, copyright 2005-2012 Gordon Laing. May not be used without permission.
/ How we test / Best Cameras / Advertising / Camera reviews / Supporting Camera Labs

Webdesign by Alphabase IT
Powered by phpBB® Forum Software © phpBB Group