Amazon.com : Laowa Front LED Ring Light for 25mm 2.5-5X Ultra-Macro Lens : Electronics
Venus Laowa 25mm f/2.8 2.5-5X Ultra-Macro Lens for Pentax K with LED Ring Light | eBay
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Laowa LED Ring Light for 25mm Ultra Macro Lens | walter sanford's photoblog
Front LED Ring Light of Laowa 25mm f/2.8 2.5-5X Ultra-Macro | Introducing the Front LED Ring Light of Laowa 25mm f/2.8 2.5-5X Ultra-Macro, your perfect partner of macro photography. During the macro