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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 22 Mar 2009 (Sunday) 05:40
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Is 70-200mm f4L IS - a dust sucker??

 
borj_joss
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Mar 22, 2009 05:40 |  #1

if so, base on your replies, then i'll definitely put on a B&W UV filter...


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TaDa
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Mar 22, 2009 06:08 |  #2

I never got a spec of dust in mine when I had it. My 70-2 2.8 IS is free of dust as well. They're internal focusing, so that helps reduce any "dust sucking"


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Sean
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Mar 22, 2009 06:37 |  #3

It's weather sealed, so dust cannot get into it.


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rral22
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Mar 22, 2009 09:29 |  #4

You want to take one of Canon's sharpest, most well built, and weather sealed lenses and stick another piece of glass onto the front to "protect" it? Why would you want to degrade the images of a lens for which you paid so much?

I see no problem with having a filter to put on it when you are in honestly dangerous environments, but you don't buy a race horse and then make it pull a wagon all the time.




  
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nureality
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Mar 22, 2009 09:45 |  #5

I have HOYA SuperHMC Pro1 on my f/4L IS USM. The lens is one of the most solidly envoronmentally sealed lenses in the line - possibly of any lens ever made.

Highest quality filters DO NOT degrade IQ. HOYA SuperHMC and SuperHMC Pro1's transmit 99.7% of the light spectrum. Anyone who **** and moans about putting another layer of glass in front of their lenses needs to differentiate between cheap GARBAGE filters - which DO degrade, and highest quality filter - which DO NOT degrade.


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condyk
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Mar 22, 2009 09:53 as a reply to  @ nureality's post |  #6

borj_joss wrote in post #7572802 (external link)
if so, base on your replies, then i'll definitely put on a B&W UV filter...

My own experience is that there's no problem. I don't normally use UV's.

I used my ex copy in Namibia and Botswana during dry season over three weeks of heavy use each day and I did use a Pro1 or B&W UV mainly to keep the front element clean and protect it from sand/dust scratches. Otherwise no dust problems.

So the answer for me is ... it depends. Sometimes a good UV is valuable and sometimes not.


https://photography-on-the.net …/showthread.php​?t=1203740

  
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ed ­ rader
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Mar 22, 2009 12:03 |  #7

rral22 wrote in post #7573411 (external link)
You want to take one of Canon's sharpest, most well built, and weather sealed lenses and stick another piece of glass onto the front to "protect" it? Why would you want to degrade the images of a lens for which you paid so much?

I see no problem with having a filter to put on it when you are in honestly dangerous environments, but you don't buy a race horse and then make it pull a wagon all the time.

you're being a bit dramatic ... don't you think :D?

ed rader


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RDKirk
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Mar 22, 2009 13:11 |  #8

borj_joss wrote in post #7572802 (external link)
if so, base on your replies, then i'll definitely put on a B&W UV filter...

Unlike the 16-35 zoom, the mechanism of the 20-200 is not open to the elements (either internal or natural) from the front of the lens...so all this discussion about filters is irrelevant to the question at hand.

No, it's not a "dust sucker" as has been alledged for some kinds of "push-pull" telephoto lenses.


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rral22
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Mar 22, 2009 13:52 |  #9

ed rader wrote in post #7574141 (external link)
you're being a bit dramatic ... don't you think :D?

ed rader


Maybe.

A little. What's your point? ;)




  
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sonofjesse
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Mar 22, 2009 14:14 |  #10

I don't use pledge or dust mops anymore. I mount this lens and briefly go into a room to get any dust out of the air or on any shelf!!!

In all seriousness its a great lens..I run a SHMC filter on mine....for other reasons...anway good luck you will love it


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ed ­ rader
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Mar 22, 2009 14:19 |  #11

rral22 wrote in post #7574628 (external link)
Maybe.

A little. What's your point? ;)

"filters suck" would be sufficient :D.

ed rader


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gdl357
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Mar 22, 2009 14:38 |  #12

rral22 wrote in post #7573411 (external link)
You want to take one of Canon's sharpest, most well built, and weather sealed lenses and stick another piece of glass onto the front to "protect" it? Why would you want to degrade the images of a lens for which you paid so much?

I see no problem with having a filter to put on it when you are in honestly dangerous environments, but you don't buy a race horse and then make it pull a wagon all the time.

HAHA scratch your front lens and see how much it costs to replace it. Much less than a Hoya filter??? NO...


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sf_loft
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Mar 22, 2009 15:03 |  #13

gdl357 wrote in post #7574822 (external link)
HAHA scratch your front lens and see how much it costs to replace it. Much less than a Hoya filter??? NO...

True... I always have a filter on my lenses more for protecting my investment. When I went to India, my camera took a beating from the heat, dust, and high winds which slams debris against the lens. At the end of the trip, my brand new UV filter had fine pit marks in some areas from the elements. This could have been your lens.


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Denny ­ G
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Mar 22, 2009 15:26 |  #14

sf_loft wrote in post #7574948 (external link)
True... I always have a filter on my lenses more for protecting my investment. When I went to India, my camera took a beating from the heat, dust, and high winds which slams debris against the lens. At the end of the trip, my brand new UV filter had fine pit marks in some areas from the elements. This could have been your lens.

That's awful, What kind of filter was it\?




  
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mattia
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Mar 22, 2009 15:43 |  #15

gdl357 wrote in post #7574822 (external link)
HAHA scratch your front lens and see how much it costs to replace it. Much less than a Hoya filter??? NO...

...that's what that big, nice lens hood that came with the lens is for.


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Is 70-200mm f4L IS - a dust sucker??
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