Free Shipping on ALL Products
camera reviewsbest cameraslens reviewsphotography tipscamera forumvideo toursphotography bookssupport me
It is currently Wed Nov 26, 2014 9:58 pm

All times are UTC




Post new topic Reply to topic  [ 2 posts ] 
Author Message
PostPosted: Tue Dec 20, 2011 8:50 am 
Hi all,

Alot of questions already regarding these two but none very conclusive for me. I've a nikon D3100 and going to replace my default kit lens with any of the below two -

1. Tamron SP AF 17-50 mm f/2.8 XR Di II LD Aspherical (IF)
2. Sigma 17-70 mm f/2.8-4.0 DC Macro OS HSM

I hear the old tamron (non VC) is alot better in terms of sharpness than the new VC one. Also hear the sigma does a front/back focus on canon mount...what about nikon mount..any experience?

My requirement is to have a good general purpose lens which can product very sharp images with decent focus.

Below are the pros and cons..I picked up from lenstip (I know people can check themselves but seeing in one place makes for better understanding. Plus these two lens seem to be hard choice for most users)

Tamron SP AF 17-50 mm f/2.8 XR Di II LD Aspherical (IF)
Pros:
great sharpness in the middle of the frame at all focal lengths and diaphragm ranges
very good picture quality on the edge of the frame (except f2.8 )
small astigmatism
good performance against bright light
good autofocus work
good build quality
small size

Cons:
visible chromatic aberration
vignetting at the whole focal length range (although the vignetting is even bigger for competitors at the same price range,)
visible coma at f/2.8

Sigma 17-70 mm f/2.8-4.0 DC Macro OS HSM
Pros:
decent quality of build,
sensational image quality in the frame centre in the 17-28 mm focal lengths range,
very good image quality in the frame centre at longer focal lengths,
useful image quality at the frame edge,
efficient image stabilization,
chromatic aberration well corrected in the middle of the range and at longer focal lengths,
low astigmatism,
quite well corrected coma,
correct work against bright light,
relatively silent and efficient autofocus.

Cons:
combination of maximum relative aperture and maximum focal length is not very useful,
visible vignetting in the whole focal lengths range.


Even with all this, I still cant make up my mind.
For me the OS seems to make a bit of difference effecting my decision...
But would like to hear your opinions based on your usage regarding these two lens.

These two lens seem to be the most widely preferred cheap upgrade from kit lens and lets put some perspective on them..

Cheers!
Arun


Top
  
 
 Post subject:
PostPosted: Tue Dec 20, 2011 9:18 am 
I see some comments that the tamron (non VC) is not sharp at f2.8 - than there is no point is it...If you have f2.8 than you want to use it....


Top
  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 1 guest


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