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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 16 Nov 2017 (Thursday) 12:29
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renew youre lenses every 3 years?

 
ed ­ rader
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Nov 16, 2017 15:51 as a reply to  @ post 18497982 |  #16

humor doesn't suit you man  :p


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CyberDyneSystems
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Nov 16, 2017 15:51 |  #17

Guardijan wrote in post #18497881 (external link)
Hello all,

I had a conversation with my sister in law which is a excellent photographer.
She stated that lenses are not as sharp anymore after say 3 years?

I never knew that and dought that it is tru.

Any thoughts?

Kind regards

Jan


Not even in the realm of reality.
Approaching tinfoil hat type of insanity :)


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CyberDyneSystems
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Nov 16, 2017 15:54 |  #18

Actually, it is TRUE. And the resale value drops to like 15% of original value. I would be happy to take them off your hands.


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Ah-keong
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Nov 16, 2017 20:34 |  #19

is the coating gone?  :p


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ejenner
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Nov 16, 2017 21:59 |  #20

Actually the UV-C (yes a little known component of light) will wear down the optics over time. This is why many of us keep our most expensive lenses locked away and hardly ever use them, and never outside.

It's very similar to the physical phenomenon where by when a new lens comes out your old, previously sharp lens, now looks like a soft POS.


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PeterAlex7
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Nov 17, 2017 05:44 |  #21

This hobby already an expensive one, then now she's just made it a lot more expensive :cry:

Maybe within 3 years life time of her (ex) lens, something happened and she didn't knew it. Like dropped from 5th floor but no damage visible on the outside but in the inside the focusing mechanism damaged, so it cannot be spot on anymore when focusing.

I think the answer is no, if you always take care on your gear, even a 50mm f1.8 II would last longer than just 3 years




  
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PeterAlex7
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Nov 17, 2017 05:49 |  #22

CyberDyneSystems wrote in post #18498037 (external link)
Actually, it is TRUE. And the resale value drops to like 15% of original value. I would be happy to take them off your hands.

Then in the next 6 years, i will be right on the front of your door, ready to take the 500L II off your hands for free :-D




  
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Pippan
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Nov 17, 2017 07:10 |  #23

ejenner wrote in post #18498256 (external link)
Actually the UV-C (yes a little known component of light) will wear down the optics over time. This is why many of us keep our most expensive lenses locked away and hardly ever use them, and never outside.

I don't have that problem. I smear sunscreen across the front element to protect it from UV-C. Pictures come out a bit blurry but I know my lenses won't degrade.


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Perfectly ­ Frank
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Nov 17, 2017 07:14 |  #24

I had my 300 f2.8 IS for 3 years when it went stale. So I traded it in for the new 300 f2.8 IS II.

Every so often a stale lens has to be traded for a fresh lens. That's what I tell my wife :)


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When you see my photos you'll know that I'm not.

  
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Guardijan
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Nov 17, 2017 09:31 as a reply to  @ post 18497970 |  #25

Euuhhhh she really does!




  
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Guardijan
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Nov 17, 2017 09:36 |  #26

Gentlemen ...my sister in law is a really gifted photographer and normally knows her stuff.

i myself own some lenses 10-12 years old and never had a problem.well neverr...

Normally she really knows her stuff.
She now has a 70-200 2.8 (3 years old)i know she is in the market for a new one.
Quess she 's trying to fool her husband ;-)a

Thanx for the answers ,i started to dought myself.




  
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Eric ­ Hopp
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Nov 17, 2017 09:42 |  #27

I'd be SO BROKE if I had to replace my lenses every three years....;-)a




  
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Numenorean
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Nov 17, 2017 10:11 |  #28

This is one of the most ridiculous things I've ever heard.

The only thing that I "refresh" are my memory cards periodically but these have known read/write cycle limitations.

I refresh lenses in order to get better glass, I wouldn't get the same lens. For example, I sold a 70-200 f/2.8L IS and bought a 70-200 f/2.8L IS Mk II. But the only way that my Mk II will lose it's sharpness is if I drop it or treat it poorly. I don't do that.

I see the photojournalist comment and that's ridiculous to me as well. I wouldn't just toss my lenses around and bang them up just because I'm a photojournalist.


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Numenorean
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Nov 17, 2017 10:12 |  #29

Guardijan wrote in post #18498471 (external link)
Gentlemen ...my sister in law is a really gifted photographer and normally knows her stuff.

i myself own some lenses 10-12 years old and never had a problem.well neverr...

Normally she really knows her stuff.
She now has a 70-200 2.8 (3 years old)i know she is in the market for a new one.
Quess she 's trying to fool her husband ;-)a

Thanx for the answers ,i started to dought myself.

Better buy lenses from her. Give her 50% of the actual used cost because ya know they aren't sharp anymore.


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Capn ­ Jack
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Nov 17, 2017 11:33 |  #30

Left Handed Brisket wrote in post #18497885 (external link)
What is her explanation for this?

Not that I would believe it, just curious.

I'm wondering about her explanation as well.

ben805 wrote in post #18497968 (external link)
Yes it is absolutely true, but only in this condition: When the lens being used by photo journalists for DAILY news coverage, exposing them to harsh elements and treatments on daily basis, being knocked/throw around in the bag day in and day out, after 3 years the glass elements are sure to get out of alignment and no longer as sharp as they used to be. The fix is to send it in to be serviced by Canon, it will be sharp as new when you get it back.

This is my guess as well, or possible some mechanical wear. Maybe she upgrades cameras and a micro-focus adjustment may help?




  
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