The Australian site Photoreview tested the new Panasonic 100-400mm lens:
Subjective assessment of images taken at other focal lengths implied image sharpness was maintained up to about 250mm, after which it began to tail off a little. However, images were still nice and sharp at 400mm and judicious application of unsharp masking before printing yielded excellent results.
Some people may think AU$2199 is a lot to pay for a fairly specialised lens. However, we feel this lens represents excellent value for money, particularly when compared with similar lenses for DSLR cameras, which weight several kilograms more and cost at least four times the price of Panasonic’s 100-400mm f/4.0-6.3 lens.
Mirrorlessons writes:
I’ll say it up-front: the Panasonic 100-400mm really surprised me. I wasn’t expecting the lens to be that sharp at all focal lengths and the fastest apertures. Although I used 300mm and 400mm most of the time for my wildlife photos, I also found it helpful to be able to pull back to 100mm. It can be an excellent choice not only for birds and wildlife but also for outdoor sports and other applications where a long lens is required.
Camerastuffreview writes:
The resolution (in lp/mm) of the Panasonic 100-400 mm is so high that a 24-megapixel camera with a larger sensor takes pictures that aren’t any sharper. You will not be bothered by vignetting and distortion. Thanks to the built-in image stabilization, you have a quiet viewfinder image when you shoot by hand, are less likely to get a motion-blurred shot in low light and get quiet video recordings. The robust construction and the extra sealing against dust and splashwater make this super-telephoto zoom perfectly suited for use under the most extreme conditions. Micro-43 users had to wait a long time for this lens, but it is worth the wait. This is an absolute winner.
Really a great lens!
Panasonic-Leica 100-400mm preorder links at Amazon, Adorama, BHphoto, FocusCamera and Panasonic. In EU at Technikdirekt, Cyberport, WexUK. Fotosidan.