Canon you blew it on 3 things on the RT EX2!
I can live with the zoom issue on the slave but the diffuser setting is useless. I will look for a diffuser that DOES NOT COMMUNICATE THAT IT IS ON THE CAMERA, THUS ALLOWING THE AUTO ZOOM FUNCTION. I dont know if its the same for the $1000 el model, and i aint spending $1000 to find out!
Issues like these. I would suggest engaging Canon Support. They might have a tip or suggestion for you. There might also be a specific reason this "function" does not exist or work like you might expect. You might be surprised.
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thanks, but i am versed in canon speedlites, studio lights, and specifically Canon speedlites having used them for a long time. The stofen adapter, or whatever nomenclature used, when used on the previous model did not communicate with the flash as the ex2 does. The adapter did not affectt the zoom function. Canon says the adapter is for bounce which is true but the adapter is used for direct flash to the subject, spreading the light, which also softens it, which Canon does not state, only spread. i understand their explanation for bounce but we used the old stofens on the ex model for all flash used INSIDE, and removed it for outside use to maximize output. All i am saying is the zoom feature should not be disabled because an adapter as they call it, is used...
Canon refers to the device you are calling a diffuser as a "bounce adapter" and discusses it being used to bounce of the ceilis and walls. See page 36 of the manual. For bounce you would want maximum light spread thus widest zoom.
Sto-fen sells diffusers.
thanks for the reply. yes i understand Canons explanation of the adapter, but the zoom feature should not be disabled because of the adapter. When using the stofens we used them for direct flash also without disabling the zoom feature. Although they dont specifically state that it softens the light, it does. Shoot 2 shots one with the stofen and one without (non bounce) and the shadows will be softer. The spread causes light loss which is why the state the power may have to be adjusted. I just use the Canon "bounce adapter" and the ex2 for a wedding in a church, as i have done with the ex and the stofen. It resulted in a hot spot when i zoomed out because the zoom is disabled. the stofen didnt do this as it didnt interfere with the zoom feature and spread the light more, but resulted in even light across the frame. When light is bounced it still spread naturally depending on the bounce material; ceiling, walls, umbrella. I am not so concerned about the light loss and spread as i am the hotspots as i use the adapter to soften shadows. I will check but i dont know if stofen makes an "adapter" for the ex2, and if they do hopefully it doesnt trigger the sensor on the flash to disable the zoom. I will let you know.
also if i wanted to spread the light in bounce mode i could set the zoom to the focal length i wanted manually and use the flash off the ceiling. my goal with the stofen was softer light, and the zoom handled the spread...