Camera is Canon EOS 250d Flash is YN565EXIII Whenever i use this external flash with my camera the image becomes darker I am newbie in this photography world so all the thing is set in default Just incase if required ( mistakenly i rolled the slider unknowingly which is near the eye lens or eye view ) I dont know how to fix it or we need to change some setting for that pleaee help me 😭😭
The Canon EOS Rebel SL3/250D does not have an ISO compliant hot shoe. It's missing the center pin needed to trigger "manual only" flashes. Canon recently started doing this with their lower end entry level cameras.
The Yongnuo YN565EX III is Canon E-TTL capable. But it may not be able to cope with a Canon camera that has the center pin missing on the hot shoe. Many third party E-TTL capable flashes and triggers require a firmware update to work with the Rebel SL3/250D, Rebel T7/1500D/2000D, and Rebel T100/300D/4000D.
The YN-565EX III requires a firmware update to be compatible with the hotshoe of the 250D/SL3, and to fire when the camera tells it to. Newer entry-level Canon dSLR bodies have had the sync contact removed from the hotshoe, which can create incompatibility issues with non-Canon speedlights.