Macro Stacker sets?

[squizza]

Good afternoon!

So it has been a while since I posted or even read anything here so I must apologise for what might already be an answered question.

I absolutely adore my Canon 100mm L IS macro lens but I want to get in even closer!!

If I were to invest in a set of stackers what would I go for and would the f/stop and clarity be affected?

Many thanks in advance

 

[Gremlin]

Do you mean extension tubes ?

 

[squizza]

Yes, sorry I should have said

 

[Coyon]

There's a calculator here:
http://extreme-macro.co.uk/extension-tubes/
(though I'm not sure where it's getting that minimum focus distance from)


SRB stuff usually does the job:
http://srb-photographic.co.uk/auto-extension-tubes-1474-c.asp

I haven't used extension tubes since I shot film, but I have other SRB bits and pieces. The Canon extension tubes are silly prices- they sell actual lenses with actual glass in for less...

 

[DerekL]

I have a set of Kenko tubes. They have contacts so the lens is still adjustable. They are far cheaper than the Canon equivalent but as there is only air in them just as good.