logitech c920 software download for windows 7

It generates a 'logi capture' virtual input that I see in Isadora. The only solution I found is to install the last version of the logitech 'capture' software, in which I can visualize a fluid 720p image. The UVC driver doesn't provide a fluid 720p image I can't find why (I've been trying an other C920 that I bought last month : same problem, I resent it thinking the webcam had a problem but with this new trial it seems the webcam isn't the problem).

for an unknown reason I can't install these 2012 drivers : the logitech 2012 installer tells me that an 'incompatible webcam is detected'. When I bought my first 2 C920 I had to install specific logitech drivers in order to have a real 30 frames per sec, which wasn't a problem last year : with the 'lws280.exe' from logitech (old logitech capture software) I could install drivers from and obtain a fluid signal. It still works with both webcams I've bought last year, but when I connect my new C920 : I've just bought 1 new logitech C920 and I can't obtain a fluid signal in 720p. I've been working succesfully with 2 logitech C920 on isadora 3.0.7 for 2 years.

Logitech c920 software download for windows 7