Severice&Technical

HI sir

Thank you for visit my website.This is DAIN from OPTICAL LENS..If you are a personal buyer or a importer company overseas.I sinclly want to develop business relation with you or your comapny!

I hope you can find the right OPTICAL LENS AND STREET LAMP LENS..If you need any help ,pls chat with me on line.For service or technical are both Ok.I am waiting for your inquiry..

Our quality has reached the international standard and have obtained many certify .Our lens are made of glass and the diameter range from 4-120mm .Also the angel ranges from 10-120°.So we are sure you can find the right lens which you like to buy.

  We can send u free samples if you are not sure about the size..But pls kindly inform us your DHL/UPS account or pay the freight.We declare that the quantity of the samples can not be more than 5 pcs.
   About the payment,we would like to use T/T for the first time and we can trust with each other with this time too.CIF and FOB are both OK.


    Dain JZ wish you have a good shopping first.

MSn :glasslens@gmail.com Skype :jingzhengwang

How To Test A Lens

Lens testing is fun and informative. While it won't turn you into a Cartier-Bresson, it will have a visible impact on your photography too: if you understand the way your lenses behave, you'll be able to make the most of them under all circumstances. For example, you might have one lens that you know to work well across the entire aperture range, and another that's otherwise OK but starts to break down wide-open at maximum tele. Knowing this, you could make the intelligent decision to use the first lens wide-open for a shorter shutter speed, to minimize camera shake -- but stop down the second lens, risking camera shake to get rid of the lens softness, or bumping up the ISO a notch, knowing that the added noise will hurt less than the lens softness.

There are two sets of characteristics that you need to consider when examining a lens: build and optical. The build characteristics are too often ignored, although in my opinion they have much more of an immediate impact on photography than the optical ones -- they can either get or lose you the shot, while the optical quality only determines how the picture looks once it's in the box. And personally, I'd rather have the shot with a slightly lower quality than miss it altogether.