Canon 15-85 try

First, pictures were taken with Eod-50D, optiomal settings ; all taken with good sun, F8. Airctaft are moving slowly (about 10-20-30 km/h). Of course, these pictures were not processed, except to lighten them (jpeg quality of 70%).

Every picture has a dark corner on the right up corner, look at other corners, the dark is less visible. Vignetting should be the same at every corner, and low(er?) especially at 40-60 mm.
On half of the pictures, the right border seems a bit blur, and the other sode seems good. look at top of tails on every picture ... you vcan hardly see the electric static lines.

The other problem is that pictures seems over exposed. Look at picture 1 taken (Exif time should be +1) taken at 8:00 (sun appeared at 06:30). Few minutes later, picture 2) was taken, also the problem. Pictures taken during the day were also bright but okay. On picture 5), the orange colour is too light (see http://www.airliners.net/photo/EasyJet-Airline/Airbus-A319-111/1690257/L/ with many other pictures).

Also with picture 3) and 4) and 5), the light (see the sky) is very different. Is it a lens issue or a body camera issue ? Pictures were taken at same settings, a few minutes later.
It seems that ligh vary depending of the focal lenght used ... small = blue sky, mid lenght, light blue sky

Any feedback very welcomed at laurent . vlieghe @ skynet . be (please of course remove the spaces)

Picture 1)

Picture 2)

Picture 3)

Picture 4)

Picture 5)