I need a macro extension ring. My "macro" Canon EF 28-70/2.8L just can't take a good picture of a 8x0.8mm led string, even after cropping.

I order a lens and body cap pair for cheap on aliexpress, hoping to glue them together to make a macro extension ring for cheap.

For now, my solution is to put a cheap 65mm magnifying glass as close as possible to the front lense of the 28-70. Image quality is not that good but it works.

Old (and expired) credit card just there for size reference. '480' was not part of any information you needed to use this card before it expired ;)