Originally Posted By: mlord
I now have a Canon 7D body, supplanting the 40D ... also ... a new zoom lens in the bag: the Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM super-zoom.


Lousy bokeh on that lens, but everything else about it is fantastic. Rugged (dropped it twice already, oops!), very, very sharp, incredible zoom range, authentic macro capability, amazingly affordable price tag, etc. A superb travel and walkabout lens; one that will be on the camera far more often than not.

So I've now gone whole hog and ordered a polarizing filter and an ExpoDisc to fit it.

Until now, I've made do with a single 72mm ExpoDisc for all of my lenses, but this Sigma lens is going to get used a lot, so having the proper size (62mm) ExpoDisc for it will be a boon.

Cheers