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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 12 Aug 2009 (Wednesday) 14:12
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Why you should never use a Canon UV Filter...

 
DDCSD
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Aug 13, 2009 13:10 |  #46

oaktree wrote in post #8453535 (external link)
BTW, the UV filter really helps when I put my camera + lens back in the bag (lens down) without putting the lens cover on. :(:(


Do you go through a lot of scratched filters because of that?


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_aravena
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Aug 13, 2009 13:45 |  #47

I don't...


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weedwhackers
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Aug 13, 2009 18:12 |  #48

wow can't belive the diff


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John7
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Aug 13, 2009 18:13 as a reply to  @ _aravena's post |  #49

I really can't see why people put these filters on their lenses. If they were required, surely the lens manufacturer would build this in?

As for the "protection" argument, what are they protecting against? Your hood (which should always be mounted) will protect against most things. Dust, spray, sand etc can all be blown/wiped off the lens with no residue. Lens front elements are tough old things you know!

I opted out of this moneymaking nonesense years ago and I have never had a damged lens as a result - maybe I'm lucky?




  
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HappySnapper90
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Aug 13, 2009 18:30 |  #50

oaktree wrote in post #8453535 (external link)
I'm doubly protected: UV filter and hood.

BTW, the UV filter really helps when I put my camera + lens back in the bag (lens down) without putting the lens cover on. :(:(

All you need is the lend hood. UV filters won't protect you unless you have a rock thrown in your front element. Learn to take care of your lenses, always put the lens cap back on when you are done using the lens.




  
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wimg
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Aug 13, 2009 18:42 |  #51

HappySnapper90 wrote in post #8455366 (external link)
All you need is the lend hood. UV filters won't protect you unless you have a rock thrown in your front element. Learn to take care of your lenses, always put the lens cap back on when you are done using the lens.

That first statement is not entirely true.

A filter will protect in a different, unexpected way as well (apart from sniffing/licking dogs, small kids pointing fingers, sand, dust, spray, and oneself when putting the lens cap on wrongly :D) and that is added rigidity of the lens barrel. Often the front, even of L-lenses, is some high grade plastic (or even lesser grade), or light metal. The metal ring of the filter actually makes it more rigid and hence sturdier.

My local retailer regularly (several times a month) gets a customer in with a lens that was bashed into something, dropped, etc. With no filter on, they all had to go to customer service of the brand, with a filter they only needed a new filter, although it sometimes was difficult to take the remains of the filter off. None of the broken filters mounted to a lens he has seen has ever damaged the lens, in his 25+ years as a camera salesperson.

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Mi6
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Aug 13, 2009 18:46 as a reply to  @ wimg's post |  #52

I use filters when I can and when I do, the HOYA UV HD filter is my choice.




  
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Aug 13, 2009 18:53 |  #53

For those who say they can't or don't understand why people put filters on there lenses. Canon even says in some of the lens instruction books that a filter must be attached for protection!
Here is how Canon words it in there 17-40 f/4L manual on page 1

5. Sealed construction for higher dust- and water-
resistance compared to previous lenses. (For
maximum protection, a filter must also be
attached to the front of the lens.)


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DDCSD
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Aug 13, 2009 19:30 |  #54

John_B wrote in post #8455465 (external link)
For those who say they can't or don't understand why people put filters on there lenses. Canon even says in some of the lens instruction books that a filter must be attached for protection!
Here is how Canon words it in there 17-40 f/4L manual on page 1

5. Sealed construction for higher dust- and water-
resistance compared to previous lenses. (For
maximum protection, a filter must also be
attached to the front of the lens.)


Imagine that, a company recommends buying and using a product that they sell...


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Aug 13, 2009 19:40 as a reply to  @ DDCSD's post |  #55

Years ago, in the era of film when digital imaging was science fiction, had a 75-300mm lens, topped by a UV filter, mounted to a Rebel XS 35mm SLR. Dropped the combination right on the front element and came up with cracked glass. The damage was to the UV filter and not to the lens. Unscrewed the remains of the filter and kept shooting. Got a replacement filter.




  
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Mike ­ Deep
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Aug 13, 2009 19:41 |  #56

Procedure for starting a thread of excessive length and repetition on POTN:

1. Mention filters.


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RDKirk
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Aug 13, 2009 20:27 as a reply to  @ Mike Deep's post |  #57

For those who say they can't or don't understand why people put filters on there lenses. Canon even says in some of the lens instruction books that a filter must be attached for protection!
Here is how Canon words it in there 17-40 f/4L manual on page 1

That is only for certain specific Canon L lenses (the 17-40L being one) that are not fully weather sealed without a filter on the front. That is not a requirement for all lenses or even all Canon lenses or even all Canon L lenses.


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HappySnapper90
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Aug 13, 2009 20:40 |  #58

wimg wrote in post #8455421 (external link)
My local retailer regularly (several times a month) gets a customer in with a lens that was bashed into something, dropped, etc. With no filter on, they all had to go to customer service of the brand, with a filter they only needed a new filter, although it sometimes was difficult to take the remains of the filter off. None of the broken filters mounted to a lens he has seen has ever damaged the lens, in his 25+ years as a camera salesperson.

No matter what product you have, there are always people who don't know how to use a product with care so it lasts without needing repair or replacement.

It's a fact that a lens hood will offer more protection than a UV filter. Lens hoods help protect a lens during falls on hard surfaces by not letting the lens hit on the front edge. A UV filter on the same lens will to nothing to prevent a hard hit on the edge of a lens. For those that are aware of what is going on around them, use a lens hood and forget the UV filter. UV filters are more likely to ruin photos with filter flare than to actually do something positive to prevent damage to your lens.

But if you're accident prone, do whatever you need to make up for your shortcomings. :rolleyes:




  
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pixel_junkie
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Aug 13, 2009 21:31 |  #59

HappySnapper90 wrote in post #8455933 (external link)
No matter what product you have, there are always people who don't know how to use a product with care so it lasts without needing repair or replacement.

It's a fact that a lens hood will offer more protection than a UV filter. Lens hoods help protect a lens during falls on hard surfaces by not letting the lens hit on the front edge. A UV filter on the same lens will to nothing to prevent a hard hit on the edge of a lens. For those that are aware of what is going on around them, use a lens hood and forget the UV filter. UV filters are more likely to ruin photos with filter flare than to actually do something positive to prevent damage to your lens.

But if you're accident prone, do whatever you need to make up for your shortcomings. :rolleyes:

Not true at all. I wish I kept that UV filter I used on my 85 f/1.8 in Costa Rica to show you the damage. Slipped on a rock while crossing a river and nailed my lens with such force that I was certain I had mangled it before I got up and looked at it. Neither the lens or the filter were destroyed. The filter has a massive scrape on its side but the glass lived. The lens .. as if nothing happened, perfect. But outside of that, so many times people have thrown water at me while I'm shooting (good luck getting watter out of your lens) and there have been other things that you just can't foresee. But if you think your UV filter may distort your image, why not do what I did (or what the OP did) and test your filters. Put your camera on a tripod and shoot with and without a filter and look at the images. I did that with one of my lenses and a Hoya and there was ZERO difference in IQ... I believe myself most.


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Underscore
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Aug 13, 2009 21:47 |  #60

I do not put glass between my GLASS and my subject; else, I might as well stick with nonL lenses.




  
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Why you should never use a Canon UV Filter...
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