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Forums · UKNP

Macro lens or tubes ?

Discussion

11 replies
Posted by Rob Howard on July 19, 2007 at 8:00 AM
Hi All,

A quick question for you. I have a 300mm f4 L IS if I buy a set of kenko ( are these the best) extension tubes will it give me the same optical quality as a Sigma/Canon 100/150/180 macro :confused:

All help welcolmed

Regards

Rob
Posted by PhilH on July 19, 2007 at 8:17 AM
Absolutely Rob, I often use that very combo (non IS), gives a great working distance. Yes the Kenko tubes are the ones to go for, cheaper as a set than a single Canon tube and much more versatile...

HTH

Phil
Posted by Alan Bryant on July 19, 2007 at 9:16 AM
Rob if you deside to get the Kenko set ?.

I got mine off of Ebay HERE .I got them within 2 days which is superb seeing that it comes from Hong Kong :eek: :cool: (but it may take longer ?).Oh and as you can see they are alot cheaper.

(mods if i'm not aloud to put in a link then please delete ?)
Posted by Rob Howard on July 19, 2007 at 9:35 AM
Hi Guys,

Thanks for the help.

Alan, just placed an order :wink:

Regards

Rob
Posted by Barry Bland on July 19, 2007 at 11:35 AM
Will these work on a 300 2.8 ???

cheers

Barry
Posted by Phillip Tomkinson on July 19, 2007 at 12:05 PM
Hi Barry they should do they work with my 500 and 800 but in nikon fit the only thing you have to remember with tubes is that make sure the hole in the tube is bigger than the rear element of the lens you're using them on otherwise it can cause vignetting.

Phillip.

:toast: :toast: :toast: :wavey:
Posted by Elliott Neep on July 19, 2007 at 12:42 PM
I bought these Kenko tubes and they do not work with my Canon 300 F2.8 IS, or 70-200 F2.8 IS. They only seem to work with my 100mm macro. :frown:

Sorry to be a downer, but I find it quite hard to believe that a 300 F4 will be as sharp as a pure Macro. Would love to see a comparison if anyone has one. :wavey:
Posted by John MacTavish on July 19, 2007 at 12:55 PM
Send them back Elliot, because they do work on both these lenses, along with 400/2.8LIS.
The bluebell shot was taken using them attached to a 70-200 2.8LIS

Vignetting seemed to be a problem when I used a 500/4.5L +1.4 +tubes, but soon vanished when stopped down a stop or so

Posted by Alan Bryant on July 19, 2007 at 1:11 PM
I've used mine seperate and all together on ALL my lenses.........

Canon
17-40 f4
100 2.8 macro
70-200 f4
100-400 f5.6
500 f4

And they all work perfect :smile:
Posted by Jim Greenfield on July 19, 2007 at 2:11 PM
I have three of the lenses Alan has and my Kenko tubes work perfectly too
Posted by Barry Bland on July 19, 2007 at 4:25 PM
they do they don't????

I have just order some and will let you all know if they work with a 300 2.8 is

Barry
Posted by A.R.D on July 19, 2007 at 6:39 PM
They do. I use them.

Regards