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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 07 Nov 2013 (Thursday) 09:38
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Tamron developing 150-600mm VC USD lens

 
Invertalon
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Dec 19, 2013 16:36 |  #811

My concern most of all with this lens is how much the barrel telescopes... I worry about how durable the extending section is, if the lens should be bumped and such. Plus of course, how bad the lens creep is (or will end up) and stuff like that. Time will tell I suppose!


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Roy ­ C
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Dec 19, 2013 17:02 |  #812

treebound wrote in post #16540609 (external link)
I'm going to guess an inexpensive Vivitar refractor 600mm telescope with a camera mount adapter.

Very good guess, it is a Skywatcher 80ED astroscope - superb IQ and takes a tc very well, of course the big drawback is manual focus. Cost around £300. The weight is almost exactly the same as the Tammy at around 2KG. I do not expect the Tammy to take a tc so well as this one but hopefully the bare 600mm will be as good.

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Dec 19, 2013 17:26 |  #813

I have used my 1000mm refractor for this kind of thing too. It's sharp but the CA is terrible.


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agv8or
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Dec 19, 2013 18:04 |  #814

Invertalon wrote in post #16540707 (external link)
My concern most of all with this lens is how much the barrel telescopes... I worry about how durable the extending section is, if the lens should be bumped and such. Plus of course, how bad the lens creep is (or will end up) and stuff like that. Time will tell I suppose!

You are going to have lens creep with any large zoom lens that is why they usually have a zoom lock. As far as the barrel extending that is the way all the comparable lenses are built and so far that has never been a major issue. There is no doubt that this will be a much better lens all around than the Tamron 200-500mm but my main concern would be with how smoothly the zoom works. All the Tamron zoom lenses that I have owned have not had the smoothest of zooming especially when compared to the Sigma and Canon zooms.


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archer1960
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Dec 19, 2013 18:06 |  #815

agv8or wrote in post #16540903 (external link)
You are going to have lens creep with any large zoom lens that is why they usually have a zoom lock. As far as the barrel extending that is the way all the comparable lenses are built and so far that has never been a major issue. There is no doubt that this will be a much better lens all around than the Tamron 200-500mm but my main concern would be with how smoothly the zoom works. All the Tamron zoom lenses that I have owned have not had the smoothest of zooming especially when compared to the Sigma and Canon zooms.

Yep. My 18-270 (the original version) likes to stick a bit part way out. I've heard the later version is smoother, though. That issue is minor, though, and definitely isn't a deal-breaker.


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commonjunks
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Dec 19, 2013 19:28 |  #816

Invertalon wrote in post #16540707 (external link)
My concern most of all with this lens is how much the barrel telescopes... I worry about how durable the extending section is, if the lens should be bumped and such. Plus of course, how bad the lens creep is (or will end up) and stuff like that. Time will tell I suppose!

BTW my EFS 17-55mm also had creep issue, and Canon told me it is normal. So if a small lens can have creep i will not be surprised to see creep issue with this humungous lens

http://review.kakaku.c​om …CD=663207/Image​ID=155962/ (external link)


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Peter2516
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Dec 19, 2013 20:09 |  #817

commonjunks wrote in post #16541099 (external link)
BTW my EFS 17-55mm also had creep issue, and Canon told me it is normal. So if a small lens can have creep i will not be surprised to see creep issue with this humungous lens

http://review.kakaku.c​om …CD=663207/Image​ID=155962/ (external link)

Same with my 17-55 but it don't bother me.


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Roy ­ C
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Dec 20, 2013 02:31 |  #818

archer1960 wrote in post #16540820 (external link)
I have used my 1000mm refractor for this kind of thing too. It's sharp but the CA is terrible.

Virtually no CA with the SW80ED, certainly better than some of the DSLR lenses that I have had, biggest problem is the lack of contrast but that is easily and quickly corrected in post.


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archer1960
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Dec 20, 2013 06:16 |  #819

Roy C wrote in post #16541743 (external link)
Virtually no CA with the SW80ED, certainly better than some of the DSLR lenses that I have had, biggest problem is the lack of contrast but that is easily and quickly corrected in post.

Yep, the CA is the whole point of the "ED" part of that name. You paid a lot more for your 80mm than I did for my 102, though, so I would expect it to be better.


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hoodlum
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Dec 20, 2013 08:04 |  #820

Size comparison with 100-400mm.

http://translate.googl​e.ca …6bih%3D1075%26t​bs%3Dqdr:d (external link)


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hoodlum
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Dec 20, 2013 09:06 |  #821

Here are some initial comments. Maybe someone can do a better translation from French as I don't quite understand the first comment.

http://translate.googl​e.ca …26bih%3D848%26t​bs%3Dqdr:h (external link)

First impressions compared to my, Canon 100-400 L:
-Not very reactive to 600 mm f/6.3 (development)
-Not bulky at all (without hand sun)
-Amazing results for stability has 600 mm of hands. (There was some light certe but I Choote to a dark corner)
-The noise? too much noise around to judge, I do not hear the focus while triggering the 6D without problem.
-Seems to be a lot of vignetting 600 mm.


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M_Six
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Dec 20, 2013 09:33 |  #822

Wow, that's a big lens.


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Roy ­ C
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Dec 20, 2013 09:40 |  #823

archer1960 wrote in post #16541889 (external link)
Yep, the CA is the whole point of the "ED" part of that name. You paid a lot more for your 80mm than I did for my 102, though, so I would expect it to be better.

The SW80ED was £300. amazing bit of glass for the money!


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bobbyz
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Dec 20, 2013 09:50 |  #824

Roy C wrote in post #16540543 (external link)
No they are not taken with a superzoom bobby, they were taken on the 7D with a mega cheap 600mm prime lens + a Canon 1.4x tc - can you guess the glass?

Guess would be some mirror lens but these look lot better so can't say.


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commonjunks
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Dec 20, 2013 09:52 |  #825

hoodlum wrote in post #16542163 (external link)
Here are some initial comments. Maybe someone can do a better translation from French as I don't quite understand the first comment.

http://translate.googl​e.ca …26bih%3D848%26t​bs%3Dqdr:h (external link)

First impressions compared to my, Canon 100-400 L:
-Not very reactive to 600 mm f/6.3 (development)
-Not bulky at all (without hand sun)
-Amazing results for stability has 600 mm of hands. (There was some light certe but I Choote to a dark corner)
-The noise? too much noise around to judge, I do not hear the focus while triggering the 6D without problem.
-Seems to be a lot of vignetting 600 mm.

This should be correct link
http://translate.googl​e.ca …-tamron-sujet_22032_1.htm (external link)


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Tamron developing 150-600mm VC USD lens
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