Canon Auto Extension Tubes for £18.00

[petersmart]

Amazon are selling a set f Canon Auto Extension Tubes for less than £20.00 with good reviews:

http://www.amazon.co.uk/s/ref=nb_sb_noss?url=search-alias=aps&field-keywords=canon+auto+extension

And they also have Nikon tubes for low prices as well.

EDIT: Some of the reviews are less than enthusiastic with some people reporting loss of connections when a heavy lens is used and some very happy with the sets.
.

 

[RIR]

I have a set of these. I had to clean the contacts before the connections worked, but, apart from that, no problems.

 

[hollis_f]

Woah! For just £2 extra you can get them with red rings!

 

[RIR]

Bargain!