Ext tube for EFS canon


paesyl

New Member
Aug 3, 2007
1,482
0
0
#3
I ask Tago but not reply if this work on EFS.
 

Camelah

New Member
Aug 20, 2010
13
0
0
#4
It works with my Sigma 50mm f1.4 (full frame lens).
It is basically useless with my Tamron 17-50 f2.8 (crop lens; focal distance too short; with tubes, can not focus any more, as focal plane behind the sensor).

It provides problems with my EF 70-200 f2.8.
Any one tube is ok.
Any tube tubes sometimes cause "ERR" or display or "aperture 00" indication, and no aperture setting possible.
Three tube mostly give error as above, and only sometimes work.

But when it works, you get great results. Tagotech offer me exchange, but I decided to keep nevertheless (they offered me some discount for that).

I recommended to Tagotech to change the description and include the error description or a caution text.

Looking at the tube contacts, one side is perfectly built, polished, and with gold plating.
The other side of the contacts is just cut metal, rough (not polished), and not gold plated.
I intend to try to polish the other side, I hope that this will improve the intermittent issues.

I'm also experimenting with another method: reverse coupling ring to mount two lenses (the front lens in reverse). This gives extreme magnification and so far great results, but extreme shallow DOF. Tubes are slightly better in DOF, but less magnification. I use two "Tianya filter adapter ring" glued together with superglue as reverse coupling ring. Cheap and works great!!!

If I got some time (rare), I intend to take different pictures of the same thing using the two different methods and then post it in the forum. Too bad so busy...
 

Last edited:

shierwin

Senior Member
Dec 29, 2008
3,487
10
38
East Coast
#5
Extension tube set from Tagotech is not suitable for “modern” electronic coupled lens as there’s no aperture ring on the lens. Best to use with old manual lens that has an aperture ring. I’m not sure whether it will take EFS lens.

You can get the nikon/canon reverse mount ring from same vendor that will allow you to reverse you lens direct onto to the body. Couple ring is also sold which allow you to reverse mount the filter thread of one lens onto the filter thread of another that is fitted to the body. Cost more to glue two filter rings to mount the lenses. They come in various thread sizes, costing around $20
 

Camelah

New Member
Aug 20, 2010
13
0
0
#6
Extension tube set from Tagotech is not suitable for “modern” electronic coupled lens as there’s no aperture ring on the lens. Best to use with old manual lens that has an aperture ring. I’m not sure whether it will take EFS lens.
The extension tubes from Tagotech are suitable for modern lenses, not just for manual lenses. They have all the contacts necessary to operate the lens electronics. It is just that the tubes may not work with certain lenses, for reasons not known to me. I suspect it is poor quality of the contact pins, and hence increased resistance, leading to unstable operation when several of them are stacked. It may as well be that the alignment is not 100% correct when stacking several of them.

Paesyl,
if you like you can try out my set with your lenses. Feel free to PM me.
 

Last edited:
Jan 28, 2010
646
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Ha Noi, Vietnam, Vietnam
#7
Does it work with your Sigma 50mm when you stack all of them together? I use the same lens and I'm considering buying extension tubes as well :)
 

Camelah

New Member
Aug 20, 2010
13
0
0
#8
Does it work with your Sigma 50mm when you stack all of them together? I use the same lens and I'm considering buying extension tubes as well :)
No. All three makes is more than 60mm, so that the plane of focus is behind the sensor. You would need lenses with longer focal length to use all 3.
But with the Sigma 50, you can use 2. You will however get very very close to your object. Magnification is at least 1:1.
 

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