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Old Jun 2, 2005, 1:53 PM   #1
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Hi, my new sigma 28-300mm I discovered a dot of dust and few particles but when I try to clean they are under the lens, how I can unscrew the lens to clean ?

the help is appreciate

amatheu
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Old Jun 2, 2005, 2:08 PM   #2
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No buddy you don't do that. Take the front element off, that is.

That dust wont harm your photographs at all. I understand it may be annoying you, especially as you don't expect it to be there after paying your money. If its really bothering you take the lens back, try to get a replacement. You might find they will send it off, leaving you without your lens for a time though.

Lenses that move externally when zooming can take in a certain amount of dust. Try to live with it, as it wont be the only time you´ll come across this.
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Old Jun 2, 2005, 2:14 PM   #3
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Ps..

also. If that just a new lens (old or new actually), try to avoid actual cleaning of it unless really required. Unlike cars and windows, lenses shouldn´t need a whole lot of cleaning. A large bulb blower is quite good at blowing away dust if your perturbed about stuff like that.

Don't scrutinize the front elements. This will only drive you nuts and make you more picky.

Lens hoods are good, but generally try not to touch the glass, which will mean no cleaning required.
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Old Jun 3, 2005, 9:54 AM   #4
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Thanks for the advice, that really make me crazy, but I going to try not look the the lens until I see something in the picture.

thanks
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