- Messages
- 669
- Name
- Tony
- Edit My Images
- Yes
Hi can i have 2 filters on a lens at the same time at the moment i have a uv filter on can i put cir-polarizing one on also or which will be better in sunlight
Two filters on a lens
- Thread starter cruncher75
- Start date
- Messages
- 7,168
- Name
- Phil
- Edit My Images
- Yes
You can, but you might not want to.
1) More glass = lower quality
2) Using Wide angle lenses might show darkening at the edge of the frame.
For best effect from a CPL, remove the UV first!
Phil
1) More glass = lower quality
2) Using Wide angle lenses might show darkening at the edge of the frame.
For best effect from a CPL, remove the UV first!
Phil
OP
- Messages
- 669
- Name
- Tony
- Edit My Images
- Yes
Ok thanks this will be on a 24-105 lens
- Messages
- 7,168
- Name
- Phil
- Edit My Images
- Yes
Then it depends on the body, but at the wide end on FF you could well see some vignetting on stacked filters. Either way, just use a CPL on its own!
Phil
- Messages
- 1,781
- Name
- Shayne
- Edit My Images
- No
Haha I was just going to say that Hoppy.
Just wondering why anyone would want to do that.
- Messages
- 2,529
- Edit My Images
- No
Haha I was just going to say that Hoppy.
Just wondering why anyone would want to do that.
Purely lazy to take the Uv off and screw the CPL on.
For me, when I put the UV filter on, I make sure everything is absolutely dust free, clean, etc on the inside.
Once I have it on, I never want to take it off. For that reason, it might make sense to stick a CPL on top rather than swapping them.
- Messages
- 2,599
- Name
- Ricky
- Edit My Images
- Yes
you know dust can get into the lens in ways other than the front element?
also lenses come out of the factory with quite a lot of dust in them it's just generally not flocculated
Wasn't really talking about INTO the lens, but more about on the lens (dirt/fingerprints etc). They may not show up in the prints but you never know when you might smudge your filter by accident when you're taking it off on the go or get dirt trapped inside...
- Messages
- 1,781
- Name
- Shayne
- Edit My Images
- No
Uneducated_Rick said:
With all do respect it really does not. People have been using hoods with no filter to protect their lenses for years with out problems. That's kinda like saying not to change lenses because you might get dust in it. If precautions are taken everything will be fine.
Opps I just realized that I quoted the wrong post in my reply. Sorry about that. I really need to stop using my phone on this forum.:bonk:
Last edited:
- Messages
- 26,490
- Name
- Phil
- Edit My Images
- No
Then the best way to avoid a dirty filter is to leave it off. Problem solved.
So the best way to keep your gear clean is to just do that 'clean it', when you've had a shoot, whilst your pictures are downloading (and backing up) give everything an inspect and a clean and it'll be ready for next time you want it. If you really want to avoid all dust and fingerprints you could just leave it all at home packed in the boxes (does wonders for resale value too). But this ought to be general advice for photographers not gear dealers.
That's obviously not the only consideration for using a filter, and also not what this thread is about.
Walking through crowded areas when on holiday, lots of reasons to have a filter. Put it on once perfectly without dust and smudges etc in a clean environment where you have the time. Once that's on perfectly and you know you're not going to be back somewhere clean or have time to sit there etc... it might make sense to stack the CPL on top
Walking through crowded areas when on holiday, lots of reasons to have a filter. Put it on once perfectly without dust and smudges etc in a clean environment where you have the time. Once that's on perfectly and you know you're not going to be back somewhere clean or have time to sit there etc... it might make sense to stack the CPL on top
- Messages
- 2,599
- Name
- Ricky
- Edit My Images
- Yes
I think you may need to read what I said again - I was saying filters don't offer protection again dust
Why not put the CPL on and forget the other filter?
This way your filter is on without dust and smudges etc in a clean environment.
As for dust on front, inside, or on the rear of a lens the closer it is to the sensor the greater the effect - dust on the front element isn't really noticeable
http://www.kenrockwell.com/tech/flashlight-test.htm
Thanks for the link, that's quite interesting.
I don't keep a CPL on there all the time because I like to do night shots without flash. Wouldn't want to have to increase the ISO an extra stop just because I have a CPL on there.
- Messages
- 26,490
- Name
- Phil
- Edit My Images
- No
But why is keeping a filter clean easier than keeping a lens clean?
You jump straight to how it's obvious to put the filter on in a clean place and the lens stays clean, but the filter still needs looking after. Why not just look after the lens instead? It's the same amount of looking after but without adding the extra glass surfaces.
My rationale for having a filter is not to keep the lens clean. My rationale for having a filter is to keep the front element from getting damaged.
For example, walking through a crowded market in Thailand. People bumping into you and slipping past you in inevitable, but would I rather someone's zipper rub against my front element or my lens filter? I'd take lens filter any day. Some people prefer hoods for this purpose, but I find the extra protrusion as another part of my camera people might bump into.
Also, if I'm on a beach, for example, and sand gets on my filter and I need to wipe it off quickly. If it scratches my filter, I can replace it, but if it scratches my front element I'm out of luck. This example ignores the fact that I'd be getting sand on other parts of my camera-- obviously I'm more careful than this, but I can think of numerous examples, personally where I'd like my front element protected.