Resolved! Speedlite 580EX II problem in E-TTL mode
Hi, My speedlite has recently started to produce underexposed photos in E-TTL mode. Compared with previous photos the difference is about 2/3 - 1 full stop. I have conducted a number of tests using my EOS 40D and a 24 - 105 EF f4/L IS USM lens. I hav...