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Canon EF 100-400mm f/4.5-5.6L IS USM upgraded sinse 2002 ?


shutterbug78

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<p>Hello, anyone out there know if the Canon EF 100-400mm f/4.5-5.6L IS USM Tele zoom lens Has been upgraded sinse 2002 ? Glass & Coatings ? Mine was bought in 2002 and the lock ring is stuck ...I need to know if I should send it in to repair it or should I buy a newer hopefully upgraded version. The new Canon 200 - 400 is out of my price range ($11,000). I also own the 500mm which I love but we need a more light weight portable lens too. I like the zoom on the 100-400. Thanks for your input, Shutterbug78</p>

<div>00ckSy-550249584.jpg.296746e6658331b3832ea73ffdaaa6c6.jpg</div>

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<p>I'm pretty sure it hasn't been updated since 1998 (when it was introduced).</p>

<p>I suppose the answer to the question 'should I repair it?' comes down to how much it will cost. While I certainly wouldn't expect any other particular failures, every other electrical and mechanical system in the lens is 12 yrs old as well - and has 12yrs worth of wear and use on them. Since there is no 'upgraded' version, that is the only compelling reason to buy a new unit, though, in my mind, it's not a very compelling reason ;)</p>

<p>Of course there are also persistent rumors that this unit is on a short list of lenses to be replaced (certainly it is old enough!)... Obviously those rumor so far have proven unreliable... but... tomorrow maybe? ;)</p>

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<p>Canon does sometimes change things without saying so, but so far as I know, the current version of the EF 100-400mm lens is the same as was introduced waaay back in 1998.<br>

While you'd think it would be time for an update, I'm not sure that the EF 200-400mm is it.<br>

<img 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" alt="" /></p>

<p>I just bought one of these last year and have been very pleased with it. If I ever figure out a way to write the newer one off on <strong><em>my</em></strong> taxes, maybe someday. ;)</p>

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<blockquote>

<p>If you believe the rumor mills, the 100-400 may be updated this year.</p>

</blockquote>

<p>LOL, If I believed the rumor mills, I'd have been disappointed by a lack of a 100-400 mk2 for the last 5 yrs! ;)<br>

Of course, I like to think that the reason is simply because it's hard to improve the unit, at least at a price point which would appeal to the same buyers...<br>

Of course there is considerably more competition in this type of lens than there has ever been before... so who knows!?!</p>

<p> </p>

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<p>I had mine serviced last year. They replaced I think the fluorite glass and got the focus ring working like new. It cost half the price of a new one. I haven't used it that much since I got the 75-300L IS. In a side by side comparison the new lens snaps to focus, while the 100-400 is much slower to focus. This comparison on some trees in full sunlight.<br>

I shot a lot of birds in the old days with the 100-400 and was very happy, it was able to follow a bird in flight nicely. But the 75-300 is just superb. I shot some dogs playing and it kept focus at all times easily.<br>

The zoom on the 100-400 is far inferior to the ring focus on the 75-300. It's slow and not precise. You need to move your left hand way out there.<br>

I shoot the 75-300 with a 1.4x extender when I need the extra reach. Or I just crop a bit.<br>

I'd love to have an updated 100-400.</p>

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<p>I would send it to Canon for an estimate. Some years ago, I sent my 300 f/4 IS to Canon for a repair estimate. They quoted me $ 189 but when they repaired it they replaced a lot more than what was on the original estimate. Nonetheless, they stood by the $ 189 charge. I don't know if I just got lucky, or if this was policy at the time, but it seems to me that given the price of a new lens it's worth the risk of roundtrip shipping.</p>

 

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<p>I read on a thread someone had the repair done for around $250. The lens is built like a tank, will be worth repairing. Curious how this happens? Shooting in dusty dirty locations, sea salt? Did you have a tendency to not fully rotate to smooth before zooming or gorilla tightening the ring? Lubing the lens with coconut oil accidentally at the beach? Maybe coconut sun lotion would help ;-) Just hoping to avoid this with my lens one day.</p>
Cheers, Mark
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<p>Hi Mark,<br>

Good Question...how did it happen ? We can only guess...we discovered the problem a week after my Hubby used it at a Kids Birthday party in a bike riding type of play park. My husband set it on the end edge of a picnic table, upright in it's original carry bag... when I saw this I rescued It by laying it on it's side away from the edges of the table, protected from a roll.<br>

But, we had 15 grandkids ages 10 and under plus a few of the kid's friends at the party...Hummmm ....an accident waiting to happen? Probably did already and some one picked it up with out telling us about it.<br>

Yes my husband may have tightened it too tight...and the lens has been in many different environments over the last 12 years...<br>

It has been repaired from falling off a tripod carried over my shoulder 2004 (Camera was not attached to tripod properly & Film camera had it's ribbon guts pulled out on impact on the road)... also was cleaned & Adjusted at least one other time in the last 2 years....not for locked up ring though. </p><div>00clfx-550481384.jpg.6496c7b595e0917f34caf66a756074f3.jpg</div>

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<p>The failure you describe is not uncommon with this lens. Provided you have not forced it and done further damage (as I did) the repair costs are reasonable, around 1/3 the cost of a new lens. Mine came back and seems to perform better than it did previously. <br>

I don't think there were any in service upgrades of this lens. A few years back there was chatter that the later lenses performed better than the older ones but more experienced photographers seemed to think there was no difference. The lens has a learning curve, like any long telephoto, and the source of the chatter could well have been from inexperienced users or from those who now had the benefit of AFMA.<br>

This is a popular lens, and I think good used examples will have a ready resale, I think I'd get it repaired, even if a revised version might be coming someday.</p>

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