Originally posted by boyscout Any one knows the true difference between the 10/20/30? The Kata site has the same slid show for all three bags.
Dont know the actual measures, but had the change to compare them in a store. size 10 is a nice bag but definitely too small to my use, I prefer a common shoulder bag in that size.
20 and 30 seem to be otherwise practically the same size but 30 is good two inches wider than 20.
I was to purchase the 20 but took the 30 instead for the single reason that I could just put my Sigma 100-300mm attached to the body in the intended place for a quick grab. Sigma also goes nicely in the upper compartment if I choose to have another lens in my body in the prime compartment.
Earlier I left the Sigma too often home because I did not have a good bag.
If I did not have that big Sigma I would choose the 20.
Size 30 sure is rather big, but amazingly easy to carry, and the sling really works, even when I ware it with my thick winter coat.
I recommend either 20 or 30 if you want a convenient bag that works both as a sling or as usual back bag. If I have more load to carry a longer time I simply take the other strap and use this as a back bag. Very convenient!