I'm using a canon 500D and my work requires me to take shots of jewellery. However, the shots are always not so ideal as the gemstones on the jewellery doesn't appear to be clear.
I use a 100mm macro with the 500D. Tried many different settings with f8-11 mainly and slow shutter speeds. When I zoom into the picture, the minor details always look out of focused and pixelated. Anyway I can improve?