A winter day at the lake and a few words about my new filter holder

Lonely tree around the Lac des Escarcets

Yesterday in the afternoon i left my office under a beautiful blue sky and drove to one of my favorite places in winter  : the Lac des Escarcets.
Arrived at the lake, no more blue sky but some uniform white clouds. I thought to go back immediately but perharps because i started to feel lonely without my daughter or perharps because i wanted to test my new filter holder with a very wide angle lens, i went for a little walk around the place.

Regular readers may know that i have recently renewed my graduated ND filters. With them i've bought one new filter holder designed to work with wide angle lenses.
That's a Hitech MK4 wide angle with 2 slots for filters.
The most common problem when using filter olders with a wide angle lens is vignetting. So i tested my new one with my Sigma 10-20 and i'm very happy with the results : at 10 mm there is some vignetting (i can see the holder in the corners of the viewfinder :)), from 11.5 mm no more vignetting, the images are perfect.
Note for photographers : i use 100 mm wide filters and can't say about the holder designed for 85 mm wide filters.

The photo above was done with a 0.3 soft filter. That means that the darkerst part is one stop darker than the clearest one. That's a perfect example of an image i could have done without any filter but where using filter really increase the file quality : without the filter i should have underexpose the photo to keep the sky perfect and some part of the tree trunk and the vegetation all around would have been a little noisy. Of course, one stop underexposure is not a very big issue when you shoot raw but the fact is that the filter really gives a better file and makes post processing easier.