08-25-2010, 12:43 PM
Sorry, I dont know about that better ask MArkus. But all lenses, even if not weather sealed, withstand a slight drizzle or light snow without any problems, if you wipe the barrel before putting the lens back into your bag. Only if you intend to shoot in pourring rain for a prolonged period of time do you need weather sealed lenses. And dont forget, if your body isnt sealed, there is no point having a sealed lens.
For example I have been shooting with the canon 17-85 for years in misty , rainy weather and never had a problem. Of couse you have to take a little bit care and wipe any drops of rain from the barrel, particularly if the barrel extends and drops may get sucked into it. But I never found this to be a problem. Really weather sealed lenses are mostly used by professional sport or wildlife shooters who cant their camera into the bag between shots and keep them exposed to the elements for hours without protection.
For example I have been shooting with the canon 17-85 for years in misty , rainy weather and never had a problem. Of couse you have to take a little bit care and wipe any drops of rain from the barrel, particularly if the barrel extends and drops may get sucked into it. But I never found this to be a problem. Really weather sealed lenses are mostly used by professional sport or wildlife shooters who cant their camera into the bag between shots and keep them exposed to the elements for hours without protection.