I know everyone has their own ideas on this topic and I have been trying to obtain acceptable photos for some time.
Finally I have found something that seems to work. The coin below was photographed by a Lumix DMC-TZ20 camera
without any illumination save the light in the room being a small table lamp which was shadowed where the coin was situated by my printer. The Lumix
was mounted on an Aldi Maginon tripod and set on IA focused on the coin to fill as much of the field as possible. The photo was taken
using the 10 s. delay to avoid movement. The f stop was 6.4 and shutter speed 1/15 s.. I have tried before with extra illumination
and using the macro setting which proved unsatisfactory with bright highlights on parts of the coin and poor depth of field
I am no expert but have spent many hours trying to get results that I am happy with. For me, capturing the toning and eye appeal as it is in hand, is the primary objective.
Here is an example of a 1918 HC I am happy with, photos-wise, a different coin to yours of course. It has the same 'life' and 'depth' as when I view it in the raw:
Some recent additions, I do like the Half crown and the Groat looks much better in hand. Again none really qualify for coin of the week but the Groat means 1 more box ticked for now. The shilling is currently in a dodgy NNC slab but I intend to break it out ASAP.