PentaxForums.com - View Single Post

mkcmcuh · 07-15-2008, 09:07 AM

Originally Posted by mkcmcuh

I recently purchased a B&W UV-Haze filter and a B&W Circular-Polarizer filter for my DA 18-55 II kit lens. I purchased these filters thru "The Filter Connection" (Camera Filters The Filter Connection 2filter.com for Hoya HD filters, Hoya Pro 1, Tiffen HT, Tiffen 4x4 Camera Filters, B+W filters and Canon Inks) and had very good service.
I keep the UV filter on the lens all the time for protection of the lens.
Can I place the Cir-Pol filter on over the UV filter (it is threaded to take a filter) or would it be better to use the Cir-Pol and UV filters separately?
Charlie

I want to thank everyone for their input.
I tried the test recommended by "Venturi". "You can find out pretty easily by putting the CP on with the UV and taking a bright daylight shot at 18mm. If you see shadow around the edges of the pic then you have your definitive answer. " and found no difference using the filters in combination.
I could detect no difference in the image using a UV filter versus no UV filter. At least to these old eyes.
Using only the Cir-Pol filter I found that the image was more natural with the darker part of the filter at the bottom. I am assuming that is the way it should be?
Using both the UV & Cir-Pol filter together showed the image to be almost the same as using just the Cir-Pol filter. I could not detect any shadows.
These tests were conducted at 18mm in bright Sun with a temp of 99.7ºF and saved as .jpeg. Needless to say the tests did not last long, as the temp eventually reached 101º F here in the Texas Hill Country.
At the present time I prefer to keep a UV filter over my lens for protection. Maybe as I become more proficient I will remove it.

07-15-2008, 09:07 AM	#9
mkcmcuh New Member Join Date: May 2008 Location: Texas Hill Country Gallery Photos: 0 Posts: 5	Originally Posted by mkcmcuh I recently purchased a B&W UV-Haze filter and a B&W Circular-Polarizer filter for my DA 18-55 II kit lens. I purchased these filters thru "The Filter Connection" (Camera Filters The Filter Connection 2filter.com for Hoya HD filters, Hoya Pro 1, Tiffen HT, Tiffen 4x4 Camera Filters, B+W filters and Canon Inks) and had very good service. I keep the UV filter on the lens all the time for protection of the lens. Can I place the Cir-Pol filter on over the UV filter (it is threaded to take a filter) or would it be better to use the Cir-Pol and UV filters separately? Charlie I want to thank everyone for their input. I tried the test recommended by "Venturi". "You can find out pretty easily by putting the CP on with the UV and taking a bright daylight shot at 18mm. If you see shadow around the edges of the pic then you have your definitive answer. " and found no difference using the filters in combination. I could detect no difference in the image using a UV filter versus no UV filter. At least to these old eyes. Using only the Cir-Pol filter I found that the image was more natural with the darker part of the filter at the bottom. I am assuming that is the way it should be? Using both the UV & Cir-Pol filter together showed the image to be almost the same as using just the Cir-Pol filter. I could not detect any shadows. These tests were conducted at 18mm in bright Sun with a temp of 99.7ºF and saved as .jpeg. Needless to say the tests did not last long, as the temp eventually reached 101º F here in the Texas Hill Country. At the present time I prefer to keep a UV filter over my lens for protection. Maybe as I become more proficient I will remove it.