That is just the thing I am after neuro. Thanks!
Might look out for that lens Paul, its likely though that I will only use it for flowers, and as the end of summer will be here soon I won't invest much in it until next year now.
Might try that adapter too littlewildcat. I've liked some images I've seen shot that way.
Dukinald, it is a full manual lens so no problem with aperture.
Thanks for all your help
Does anyone happen to know just how true the LCD on a 7D is? Whilst mine looks reasonably good, if I shot in live IDE to focus using this lens and adapter will it be accurate? My last DSLR didn't have live view and the viewfinder wasn't great so in focus shots were down to luck as much as skill.