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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 27 Jul 2013 (Saturday) 02:06
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Extension Tubes

 
RickRandhawa
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Jul 27, 2013 02:06 |  #1

I had the 100L Macro for about a week (returned due to faulty Image stabilization), and decided not to get another one. I didn't think I'd miss it, but as I walk around, sometimes I wish I would have gotten a replacement for random little things I want to shoot. I don't think I shoot enough to justify buying a macro lens so now I'm looking at the Canon EF-25II and EF-12 II extension tubes and have some questions.

1. I never shoot bugs, don't plan on starting either (they gross me out), so the extension tube will be used to get in a little closer for flowers, "ring shot" type stuff, etc. Would I be better off with the EF-25II or the EF-12II, if I were to only purchase one?

2. Can these extension tubes go on any lens? Would I have any issues using it with my 24-70 II, 85L II, or my 70-200 f/4IS?

Thanks.


6D l 24-70L II l 85L II l 70-200/4L IS

  
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1Tanker
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Jul 27, 2013 02:30 |  #2

1. The things with tubes is, the longer the focal length of the lens they're being used on, the thicker you need.. to significantly increase magnification. That's why i would suggest a set of 3. You can choose the appropriate size for the appropriate lens, and/or stack them together. I also, don't feel it worth purchasing the "Canon" tubes, when you can get a set of 3.. from Kenko (external link), for not much more than the price of the Canon EF 25 II. The Kenko set, is very very similar to the Canon, in terms of build and looks... and usage. There are also other brands that can be found for less money than the Kenko's.. some are good, some are not advisable (ie. plastic mounts, no electrical contacts for aperture).

2. Tubes can be used on any lens, if you get the right set. Some of the older ones, wouldn't work with EF-S lenses, but the v.II Canon's and Kenko "DG" that i've linked to, work on all. Note: On really wide lenses, such as the Canon EF-S 10-22, achieving focus is nearly impossible with any size tube, as it moves the focus point too close to the lens, or even inside. Another thing to note, is that with extension tubes mounted, your lens won't focus to infinity. This means that you probably have to take them off, when you want to use said lens for regular shooting.


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ElectronGuru
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Jul 27, 2013 11:28 |  #3

+ to everything above

In practice, the key disadvantage of tubes vs a macro lens is time. It takes more work/time to get the same /similar shot. This is why tubes are natural for occasional use, the time penalty gets smaller as the number of shots goes down. If this matches your needs and one of your current lenses likes it, you're all set.


"Light is the paint, lenses are brush, sensors are the canvas"
6D | 100L Macro | 50L | 24L TSE
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Wilt
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Jul 27, 2013 11:33 |  #4

In my experience over 40+ years in photography and having 3 formats which used extension tubes (APS-C, FF, 645), I have generally found that I use only the shortest available extension tube (seldom going to second length, never going to longest length or stacking). I generally do not shoot 'macro' (1:2 to 1:1 or higher mag) but I do need to 'focus closer than MFD' of the lens.


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thinkharder
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Jul 27, 2013 12:47 |  #5
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what the advantage and disadvantage of having these extension tube with canon 100 f2.8 IS macro lens? can you stack all three tube with this lens? If so does the image quality more softer?




  
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dpds68
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Jul 27, 2013 13:04 |  #6

^^^ Extension tubes have no glass in them therefore no hit in IQ .

David


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ElectronGuru
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Jul 27, 2013 16:36 |  #7

ETs have no glass, but they work my magnifying the image circle. Flaws in the lens get magnified as well, but this should still be better than crop/zooming in post. I have the 100 and just got a set of tubes. If someone who's already tried doesn't chime in, I'll check back with my results.


"Light is the paint, lenses are brush, sensors are the canvas"
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thinkharder
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Jul 27, 2013 16:52 |  #8
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ElectronGuru wrote in post #16158872 (external link)
ETs have no glass, but they work my magnifying the image circle. Flaws in the lens get magnified as well, but this should still be better than crop/zooming in post. I have the 100 and just got a set of tubes. If someone who's already tried doesn't chime in, I'll check back with my results.

when you have time can u post some pics of canon 100 F2.8 IS macro lens with and without the ET on same distance stacked tubes.

what is the difference between the Kenko Auto Extension Tube Set DG for Canon EOS Lenses for 199.00 and the one sell on ebay for less than 50.00 :

http://www.ebay.com …Tubes&hash=item​4ac65c5389 (external link)

lots of people in here said you don't used auto focus anyway is best to used manual focus.




  
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RickRandhawa
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Jul 27, 2013 17:03 |  #9

1Tanker wrote in post #16157526 (external link)
1. The things with tubes is, the longer the focal length of the lens they're being used on, the thicker you need.. to significantly increase magnification. That's why i would suggest a set of 3. You can choose the appropriate size for the appropriate lens, and/or stack them together. I also, don't feel it worth purchasing the "Canon" tubes, when you can get a set of 3.. from Kenko (external link), for not much more than the price of the Canon EF 25 II. The Kenko set, is very very similar to the Canon, in terms of build and looks... and usage. There are also other brands that can be found for less money than the Kenko's.. some are good, some are not advisable (ie. plastic mounts, no electrical contacts for aperture).

2. Tubes can be used on any lens, if you get the right set. Some of the older ones, wouldn't work with EF-S lenses, but the v.II Canon's and Kenko "DG" that i've linked to, work on all. Note: On really wide lenses, such as the Canon EF-S 10-22, achieving focus is nearly impossible with any size tube, as it moves the focus point too close to the lens, or even inside. Another thing to note, is that with extension tubes mounted, your lens won't focus to infinity. This means that you probably have to take them off, when you want to use said lens for regular shooting.

I really didn't want to have to spend $200. I figure at that point might as well spend another $100 and get the 100 non-L.

For a 24-70II do you think the EF25 would be a good fit? I can grab one for like $70-80 and the EF12 even cheaper. I'm just unsure which of the two would be a better fit. LIke I said, I dont plan on shooting bugs or anything. Just want the ability to get closer to smaller objects.


6D l 24-70L II l 85L II l 70-200/4L IS

  
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moltengold
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Jul 27, 2013 18:57 |  #10

i think you have to go to the canon web site and download the manual for your lens
and read about the two canon extention tubes and how much magnification you will get from the two kind of these tubes
https://www.usa.canon.​com …/ef_24_70mm_f_2​_8l_ii_usm (external link)


| Canon EOS | and some canon lenses

  
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dodgyexposure
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Jul 28, 2013 20:44 |  #11

^^^^ the extra magnification achieved from using extension tubes is determined by the ratio of the extension to the focal length. So, using a 25mm tube on a 100mm lens boosts your magnification by 0.25, taking your (hypothetical) maximum magnification from 0.13 (say) to 0.38.

So you can see that you get the maximum boost from using tubes with shorter lenses. However, shorter (wider) lenses also see the most dramatic effect on minimum and maximum focussing distance reduction, making the combo less usable. It's a trade off.


Cheers, Damien

  
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Rashkh
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Jul 28, 2013 22:40 |  #12

100L Macro with full set of stacked extension tubes:
http://www.leonid-auerbakh.com/img/s9/v9​0/p1832423445.jpg (external link)
100% crop:
http://www.leonid-auerbakh.com/img/s10/v​108/p1813547863.jpg (external link)

100L Macro without extension tubes at similar distance but with less flash:
http://www.leonid-auerbakh.com/img/s10/v​115/p1823518677.jpg (external link)
100% Crop:
http://www.leonid-auerbakh.com/img/s9/v9​6/p1763997352.jpg (external link)

Subject is a U.S. one dollar bill. Taken at roughly mfd.




  
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Rashkh
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Jul 28, 2013 22:47 |  #13

thinkharder wrote in post #16158911 (external link)
when you have time can u post some pics of canon 100 F2.8 IS macro lens with and without the ET on same distance stacked tubes.

what is the difference between the Kenko Auto Extension Tube Set DG for Canon EOS Lenses for 199.00 and the one sell on ebay for less than 50.00 :

http://www.ebay.com …Tubes&hash=item​4ac65c5389 (external link)

lots of people in here said you don't used auto focus anyway is best to used manual focus.


The benefit is a higher quality tube that will not break at the mount or get stuck on the camera. You also get aperture control and AF. While the usefulness of af using extension tubes might be debatable, the ability to set aperture is not, and is otherwise a pain.

You may also want to look into the Vello Extension tubes. I think that the Kenko's have slightly better build quality but the functionality is identical. If I were to get a set of extension tubes today, I would grab the Vello's.

http://www.bhphotovide​o.com …_auto_focus_ext​_tube.html (external link)

EDIT: Also, the item you linked to has a no return policy, which doesn't exactly inspire confidence.




  
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ElectronGuru
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Jul 31, 2013 01:28 |  #14

RickRandhawa wrote in post #16158929 (external link)
I really didn't want to have to spend $200.

https://photography-on-the.net …/showthread.php​?t=1319271


"Light is the paint, lenses are brush, sensors are the canvas"
6D | 100L Macro | 50L | 24L TSE
Builder of custom flashlights, OVEREADY.com (external link)

  
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1Tanker
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Jul 31, 2013 01:40 |  #15

yeah.. unless you're a Canon fanboy. or made of money.. no reason to choose the Canon, over Kenko.. or other brands (Meiki {?})


Kel
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Extension Tubes
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