What filter is attached to the lenses that you are using now?
Ever wonder what is the difference between a high-grade UV filter and a low-grade UV filter? Have you ever find out?
Here is a simple experiment you can do it at home.
Objective: To compare the quality of the available protective filter and rank them accordingly
1. One piece of white paper (a regular A4 paper will do)
2. Choice of your UV filters
1. Put all the filters on top of a piece of white paper.
2. Check the clarity visually to get a visual confirmation
3. Snap a photo of the filters arranged
4. transfer the photo into your Photo processing software (ACDSee pro will do)
5. Increase the Level and Contrast until you tell the difference.
Refer to the picture #1 attached. The one left is Nikon NC Filter (worth RM230), on the right is Hoya UV Filter (worth RM120), and on the top is Marumi UV Filter (worth RM30 at most).
You will find that the Nikon NC Filter is the clearest among all three, Hoya UV Filter is slightly darker with a little yellowish, and the Marumi UV Filter is the darkest. Yes, I know it rather difficult to tell the difference especially based on a picture, but trust me, it is very clear if you see the experiment right before you.
In case you still can’t tell the difference, Picture #2 I attached is the same photo with high contrast to help you see better.
The type of materials that called thin glass may not look as simple as you might think of. The thin glass itself will affect the penetration of light.
So do you still think the simple UV/NC filters are made equally? Think again, what lenses are you using now? Perhaps it is time to evaluate your filters attached with it.
Full report of Filter comparison is posted in: http://www.calvinstudio.net/?p=523 "