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Superzooms are quite good at macro photography. I enjoy it myself
too.
Thomas has recently started a
'Definitive' roses thread so if you have some (more) of those your contribution will be welcomed there too.
Although it's not really a macro shot I like the bananas. They don't grow where I live so I don't get the chance to shoot them.
For advice I'd suggest looking a bit more into composition. In all these photos the subject is smack in the middle of the frame.
Ben
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When in doubt..... Press the shutter.