Anyone care to try and make sense of this?!

[PureClassA]

http://www.canonwatch.com/sigma-announces-2-new-150-600mm-f5-6-3-dg-os-hsm-lenses-sport-contemporary/#disqus_thread

Sigma announces two new lenses .... they are damn near identical in every way...

 

[EOS AE1]

http://www.canonwatch.com/sigma-announces-2-new-150-600mm-f5-6-3-dg-os-hsm-lenses-sport-contemporary/#disqus_thread

Sigma announces two new lenses .... they are damn near identical in every way...

they are not and we have a few threads about them already.

 

[AcutancePhotography]

The article seems to do a pretty good job identifying what is different between the lenses.