Uv filter
Oct 22, 2017 07:38:50 #
What is the best way to protect a lens? To be careful with it when you use it and when you store it. I "protect" my lenses with a lens shade and a body cap. I have never used a UV filter.
If you have a good quality polarizer it should not degrade the image to the point that you could see it. Do you know how to use a polarizer?
NEVER use a polarizer with matrix, evaluative or multi-pattern metering and I mean NEVER. Instead use center weighted or spot and remember that polarizers at maximum polarization require two stops MORE of light so you will loose two stops of light when you use it. If the shutter speed is too slow and the camera is not on a tripod you could see the effect in your files.
If you have a good quality polarizer it should not degrade the image to the point that you could see it. Do you know how to use a polarizer?
NEVER use a polarizer with matrix, evaluative or multi-pattern metering and I mean NEVER. Instead use center weighted or spot and remember that polarizers at maximum polarization require two stops MORE of light so you will loose two stops of light when you use it. If the shutter speed is too slow and the camera is not on a tripod you could see the effect in your files.
Oct 22, 2017 07:51:56 #
Yes: "invest in UV filter for protection of lens."
I agree so from experience. Two or three times now, my camera lens has sustained a blow to its face. The UV filter cracked or shattered from the blow to it.
The lens face remained intact. I presume that without the filter, the front lens element would have received damage.
Let the contrarians have their say. Maybe they have something useful to offer for protection of the lens minus a filter. I want to read it.
I agree so from experience. Two or three times now, my camera lens has sustained a blow to its face. The UV filter cracked or shattered from the blow to it.
The lens face remained intact. I presume that without the filter, the front lens element would have received damage.
Let the contrarians have their say. Maybe they have something useful to offer for protection of the lens minus a filter. I want to read it.
SHK5796 wrote:
What is the best way to protect lens? Like UV filter? I have Tameron 150-600mm lens. Polarizing filter I have bought degrades the picture, when I enlarge/crop he jpeg pictures. Should I invest in UV filter for protection of lens?
Oct 22, 2017 08:11:04 #
SHK5796 wrote:
What is the best way to protect lens? Like UV filter? I have Tameron 150-600mm lens. Polarizing filter I have bought degrades the picture, when I enlarge/crop he jpeg pictures. Should I invest in UV filter for protection of lens?
Yes.
They do protect and unless you enlarge to 2 pixels on the screen it will make no difference.
Unfortunately the polarizer cuts light as well and has 2 pieces of glass.
Usually though the better ones also should not be so noticeable when cropping unless it is to the extreme. Also there could be other factors that could be degrading at extreme crops like unseen camera movement or the lens needs adjusting to your camera.
But overall the UV works great for me.
Oct 22, 2017 08:12:06 #
cthahn wrote:
That is up to you. A polarizing filter does not degrade the photo.
But a polarizing filter requires a few more stops of light, so it would severely limit the use of a 150-600mm lens, especially without a tripod being used!
Oct 22, 2017 08:42:56 #
I have a B&H or Hoya UV filter on all of my lenses because I would much rather clean the front surface of a filter than clean the front element of the lens element every time there is a bit of dust or contaminant on it. Most UV filters are also designed to reduce haze. $20 is a small price to pay for protecting my expensive lenses. For those who say a filter will degrade your image, I have seen no valid evidence that any such degradation is significant. In any case, I don't expect to have any of my priceless masterpieces on display at the Louvre any time in the future so I don't worry about that. 
Oct 22, 2017 08:44:41 #
Oct 22, 2017 08:45:26 #
Oct 22, 2017 08:52:45 #
billnikon wrote:
1. Any filter degrades IQ of your lens. br 2. Filt... (show quote)
I use a protective filter on each and every lens I own. I have a huge collection of vintage lenses and many have numerous "cleaning marks" and scratches on both front and back elements from repeated wiping. The fact is this--unless you take pictures in a clean room you WILL need to clean your lens, and eventually you WILL scratch it, as much dust is abrasive.
I have done extensive tests on my own with both expensive and mid-priced multi-coated protective filters. In 99% of the cases, there is no perceptible difference between the shots with and without the filter, carefully examined at 100%. I have seen a slight increase in flare around very bright light sources when using a filter in a small number of cases. Yes, any filter degrades the IQ, but if the degradation is so slight as not to be noticeable then it hardly matters that that statement is true. It's all a matter of degree.
Oct 22, 2017 08:59:58 #
To me it also depends on what you are trying to protect it from too. If you are at the beach with salt air and blowing sand then a glass filter probably is a good idea. I don't use a filter for protection otherwise but depend on a lens hood to take any bumps and bangs the lens may encounter in use.. When off the camera I make sure to put lens caps on both ends of the lens as soon as I change lenses and put the lens away in my bag. I believe that I have read that scratches on the front element of a lens have little effect on the resulting image. I am not sure this is true but it seems to make some sense that it would be better than anything on the rear of the lens or inside. Anyone have any experience with that issue?
Best,
Todd Ferguson
Best,
Todd Ferguson
Oct 22, 2017 09:10:15 #
Ditto: "For those who say a filter will degrade your image, I have seen no valid evidence that any such degradation is significant."
lamontcranston wrote:
I have a B&H or Hoya UV filter on all of my le... (show quote)
Oct 22, 2017 09:26:25 #
Oct 22, 2017 09:30:29 #
Notorious T.O.D. wrote:
I believe that I have read that scratches on the front element of a lens have little effect on the resulting image. Todd Ferguson
No way am I going to scratch my lens to find out!!!!!!!
But watch the first video on my post earlier in this thread.
Oct 22, 2017 10:01:49 #
Interesting video...thanks for sharing...
Best,
Todd Ferguson
Best,
Todd Ferguson
Hank Radt wrote:
No way am I going to scratch my lens to find out!!!!!!!
But watch the first video on my post earlier in this thread.
But watch the first video on my post earlier in this thread.
Oct 22, 2017 10:12:20 #
rmalarz wrote:
I use B+W filters on every one of my lenses.
--Bob
--Bob
Ditto That!
Oct 22, 2017 10:16:35 #
SHK5796 wrote:
What is the best way to protect lens? Like UV filter? I have Tameron 150-600mm lens. Polarizing filter I have bought degrades the picture, when I enlarge/crop he jpeg pictures. Should I invest in UV filter for protection of lens?
The lens hood
If you are going to use a filter get a good one. Don't but a cheap filter in front of your $2000.00 lens. The cheap filters don't have anti reflective coatings. We were leading a workshop and one of the students had a no name 10 stop filter and when we reviewed the photos. You could see the printing on the bezel of the lens reflecting back off the filter into the sensor
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.