[silversnapper1]

Hi,

I guess that the 75-300 probably has a macro function to 1:2 at the long end of the lens. This means that you will capture images at half size. The only problem with this is that your focussing distance will be something like 39 inches.

I have a dedicated 60 mm macro lens and this will give 1:1 at a minimum focussing distance of about 8 inches but, I find that at that range, you can often shade the object and lose too much light.

I think therefore, that the recommendation would probably be to buy a macro lens around the 90/105mm range which should give you 1:1 at around 12 inches.

Hope that this helps.

Steve.