Further to someone's suggestion about *not* using a UV filter on a digital SLR,(I don't remember in which forum), I had requested information on what would happen if one were to use a UV filter on a digital SLR instead of a plain glass filter as recommended by Nikon. Would there be any negative effects? It seems no one noticed the question and hence I am asking again. I have been using a UV filter instead of a plain glass filter. Will this in any way, affect the image quality? Thanks in advance.
#1. "RE: UV filter or plain glass filter?" In response to Reply # 0
Bay Area, US
It greatly depends on the quality of the filter. If you are using an UV filter from B+W or Heliopan, you'll be ok. There is nothing wrong with an UV filter per se. All filters degrade the image quality somewhat, it's only a question how much.
It's easy to test if you have any doubt about your filter: Put the camera on a tripod, focus on something and take two pictures, one with filter on, one without. Then review both at your computer at 100%. This will tell you more about your filter in one minute than anybody in this forum could ever tell you.
#3. "RE: UV filter or plain glass filter?" In response to Reply # 0
Key West, US
This needs to be posted in the filters forum _and_ needs to be better worded if you want accurate answers. Are you asking about any IQ loss from using filters or are you asking about any differences between using a "plain glass" filter compared to using a "UV filter" of otherwise identical characteristics?
#4. "RE: UV filter or plain glass filter?" In response to Reply # 0
Do try the filters forum for the specifics of different filters but in terms of filter or no filter on a digital body, loss of image quality on light transmission is only one issue: introducing an additional (and most likely inferior) glass surface adds to the risk of unwanted internal reflections as well. Aparently its worse for digital because the sensor is more reflective than film (?)
I have seen this with night-time exposures where I got ghostly reflections from neon lights. I had forgotten to remove the filter after being to the beach earlier in the day and I blame the filter more than the lens (but unfortunately I have no way of proving this)
I would only use a filter where you definately need the protection: next to the beach or in a dusty environment. Anywhere where you might pick up grit or salt which might scratch the lens if you clean it off in a hurry.