What lenses can not be used with the macro-flashes?
For both the Twin Flash and Ring Flash:
• Lenses whose barrels rotate when auto focusing cannot be used.
• Lens diameters of 46mm (V 50mm f/3.5 Macro) require the 46mm to 49mm step-up ring.
• the twin flash 2400 can not be mounted on the Makro zoom lens 1x-3x.
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