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FORUMS Photography Talk by Genre Macro Talk 
Thread started 05 Mar 2018 (Monday) 19:12
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tubes, which to get

 
Ltdave
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Mar 05, 2018 19:12 |  #1

looking at BHPhoto, they have 3 sets of tubes (3 in a set)

from cheapest to priciest:

FotodioX Pro Auto Macro Extension Tube Kit for Canon EF & EF-S Lenses for $48. says they allow for automatic lenses (i assume this means aperture and focus)...


Vello Auto Extension Tube Set for Canon EOS for $80. says THESE have full auto focus capability...


Kenko Auto Extension Tube Set DG for Canon EOS Lenses for $124. says they retain auto capability...

other than price and the lengths (some are 12mm, one is 13mm, 20mm vs 21mm etc) is there any real difference? ive never used them and in another thread i started i was thinking of getting the 100mm f2.8L but for WAY WAY cheaper ($48 vs $600-ish used) the only disadvantage i see in tubes is the need to get right on top of the subject matter...




  
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Wilt
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Post edited 2 months ago by Wilt. (2 edits in all)
     
Mar 05, 2018 21:14 |  #2

Metal mount is felt to be more durable than composite mount.

Some brands allow you to stack more than one extension tube and retain connectivity for focus and aperture control, while others do not.

I have a very cheap set with composite mount, and all three tubes can nevertheless stack at once and retain control of the lens by the body. I don't shoot macro ordinarily, and I only use them occasionally when I need to shorten the Minimum Focus Distance of the lens.


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Michael456
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Mar 06, 2018 02:40 |  #3

I have the Kenko tubes and the build quality is very nice. Stacking tubes also works fine, both mechanically (no wobble etc.) and electronically.




  
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racketman
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Post edited 2 months ago by racketman. (2 edits in all)
     
Mar 06, 2018 10:45 |  #4

Get the Kenko, tried and trusted. You could get a second hand 100mm macro for $300, image quality is much the same as the 100L


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Wilt
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Mar 06, 2018 10:52 as a reply to  @ racketman's post |  #5

An important characteristic for some folks is the fact that the 100mm macro is slower in its focus than the non-macro 100mm


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SaSi
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Mar 08, 2018 13:06 |  #6

The Tubes need to mount to one another, the lens and the body firmly and snugly. At higher magnification ratios, even close to 1:1, a loose fit will spoil the sharpness and may cause the subject to blur. It would make getting a steady shot hard, even with the camera fixed on a sturdy support, just because the lens would not be firmly mounted. I've had that with low quality Canon FD lens tubes, cheap, manual ones. So I purchased the Kenko tubes a few years back. They feel like "Canon quality".




  
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Temma
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Mar 11, 2018 23:24 |  #7

I've got a set of ProMaster tubes I got from Dodd Camera here.

They work fine.




  
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Bassat
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Mar 12, 2018 01:54 |  #8

Buy a dedicated macro lens. The original 100mm f/2.8 USM macro can be had for $300.

The problem with tubes is working distance. They work better on shorter lenses, than on longer lenses. My guess is that putting all of them on your 24-70 will net you a minimum focus distance (from the sensor) that is actually INSIDE your lens, which is useless. Putting tubes on a longer-than 100mm lens gives you very little return (magnification) for your money. A close focusing lens like the 35IS will actually give you better 'macro' than putting tubes on a longer, long-focusing lens like the 85 1.8. Generally speaking, tubes are money not well spent.

Even old, 3rd party macro lenses like the Tamron 90mm and the Sigma non-OS will give you way better macro than you can get with tubes, for about the same money. If I were buying a macro lens today, I'd pick from one of these:

1.) Canon EF 100mm f/2.8 USM macro. $300 +/-, used.
2.) Sigma 150mm f/2.8 OS Macro. More working distance than the expensive Canon L-macro. AF more useful than the slower 180mm versions (Sigma/Canon).


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Choderboy
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Post edited 2 months ago by Choderboy.
     
Mar 12, 2018 03:13 |  #9

Get the Kenkos for reasons already mentioned by Michael456 and SaSi.

"the only disadvantage i see in tubes is the need to get right on top of the subject matter..."
I'd say the most obvious disadvantage is loss of infinity focus. Not just infinity, depending on length of tube and specific lens you may only be able to focus on distances of less than a metre, or maybe a few metres.

If you find you like macro and start shooting regularly, tubes become useful for your proper macro lens.

I find tubes very useful on longer lenses.
Example EF85 1.8. It has a minimum focus distance of 85 cm and therefore very low maximum magnification. It's a small, light, sharp lens.
36mm Kenko tube on my 85 1.8 for this:

IMAGE: https://farm2.staticflickr.com/1087/531347118_0af383fd38_o.jpg

36mm Kenko tube on 100-400V2 for this:
IMAGE: https://farm6.staticflickr.com/5339/17916092455_4e6803d383_o.jpg

11mm Kenko tube with 100-400V2 to allow stacking 1.4X and 2X TCs for this:
IMAGE: https://farm1.staticflickr.com/409/18750603893_a638d518f9_o.jpg

Dave
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Bassat
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Mar 12, 2018 03:31 as a reply to  @ Choderboy's post |  #10

Quite impressive! I may have to reconsider my 'tubes' position!


Tom,
Film gear: Elan 7NE / Elan 7 / EOS T2
Yashica FX-D (x2) & FX-3 Super 2000 / DSB 28mm f/2.8 / 50mm ML f/2 / 135mm ML f/2.8 / Sigma Zoom-gamma II 21-35mm f/3.4.2 / Yashica ML 28-85mm f/3.5-4.5 / Tokina 70-210mm ML f/4.

  
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SaSi
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Mar 15, 2018 15:31 |  #11

A couple of pointers for your considerations:
a dedicated macro lens is always much better than a normal lens or even a zoom lens "named" macro for marketing reasons.
A long focal length macro lens gives a longer working distance from the subject compared with a shorter lens (e.g. 100mm vs 50mm).
Extending with tubes doubles the native lens magnification ratio as you provide as much tube length as the lens focal length. Hence, a 50mm lens needs 50mm of tubes to double magnification while a 100mm lens would need 100mm of tubes. So short focal lenses are more "tube friendly".
Close up lens attachments, the lenses mounted to the front of the lens as filters, work better and give more magnification with long focal length lenses. But as they contain optical elements, their quality is essential to maintain and not drastically reduce the native lens sharpness and chromatic aberration behavior.




  
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tubes, which to get
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