Just a quicky, before I hit the sack:
I have 7mm and 14mm non auto extension tubes, that I haven't used yet. Am I
right in thinking that the only difference from auto is that the shutter
doesn't stay open as you stop the lens down - otherwise they work on TTL
metering just the same? Or am I missing something important here?
Also if anyone has tips or observations on general use I'd be grateful. I
have Tamron 90/2.5 mac and Zuiko 50/3.5 mac (both 1:2) and 24/2.8, 35/2.8,
100/2.8, 135/2.8 primes. Do I have any advantages using ext tubes over/with
macros?
How would 50/1.8 with tubes compare with 50/3.5 macro?
Perhaps not such a quicky...!
Thanks, in anticipation,
Ben Russell
Ireland
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