As background, I own two other Canon macro lenses: the 100 mm L IS model and the MP-E 65 1-5x model. Plus, I use the 70-300 mm L telephoto model also for "close shots" of dragonflies and butterflies. These bugs are what I'm currently focused on (excuse the pun). Well the rental equipment was...incredible!!! Some comparison shots (uncropped and unprocessed except for conversion from RAW to jpeg) are below, caveat none of these photos were controlled in an exacting measure except all were taken using a tripod.
Initial impressions, the 100 mm macro and telephoto take sharp photos, but don't fill the crop sensor frame (yes, it's dependent on distance, etc...in many cases these critters cannot be approached with camera/tripod in hand). Note the 180 mm, very sharp and large image...what's not to like? I'm going to have to buy this lens; you should too :-) BTW, the rental experience was excellent.
|Cherry-faced Meadowhawk (ad. male) - 100 mm macro|
|Striped Meadowhawk (ad. male) - 70-300 mm telephoto|
|Striped Meadowhawk (ad. male) - 180 mm macro|