Sigma 135-400mm f/4.5-5.6
| Focusing distance: | 200cm / 78.7in |
| Magnification: | 0.19x |
| Filter size: | 77mm |
| Lens size: | ø83.5mm x 189mm / ø32.9in x 74.4in |
| Weight: | 1280g / 45.2oz |
| Construction: | 13 elements in 11 groups |
| Accessories: | Detachable Tripod adapter, Hood, Case |
Eddie's take on it
Users report sample variation, back/front focus problems. Pictures at 400mm are pretty soft. It is also slightly soft wide open at all focal lengths, needs to be stopped down.
If you need a long range telephoto, I'd pick up the Olympus 70-300mm instead.
Because the Olympus alternative is so good, not many people bought this for 4/3 and it's hard to find it used.