And then there's a depth of field question!!!
 

While I'm on a roll and getting so much help from folks can I raise a question that's been bothering me since the demise of DCMag forum? I recall a thread which had a steel rule against some herb/spice jars and the OP had used a layer technique on the 2 or three shots each of which had been focussed at a different position into the subject . By some means, and posssibly it's the same one I ask about in the Get to grips with Layers thread next to this, the out-of-focus sections of each layer had been erased and the result was a close-up shot with front to back sharpness. The OP had used PSE6 and I recall suggestions on how to do it properly and also on some software which could be purchased but cannot remember anything else. Did Chris-P get involved? I seem to remember some input from him or someone else about using the recipe on the jars!!
Dagwood

Any good to you?

[URL]http://en.wikipedia.org/wiki/Focus_stacking[/URL]

[URL]http://www.wonderfulphotos.com/articles/macro/focus_stacking/[/URL]

[URL]http://prometheus.med.utah.edu/~bwjones/C853940471/E20090311124658/index.html[/URL]

and for views on some of the different software available [URL]http://www.laurieknight.net/article/view/7[/URL]

Typing in 'focus stacking' in Google throws up page after page of information.

Forseti, you are a Star! I shall work my way through those and yes,the technique I had forgotten was Focus Stacking.
Many thanks
Dagwood

I may have got involved, I can't remember now! Forseti has given you more, and better, information that I would have done anyway!

I might have a go at this myself as I've never done it!