The Panasonic GH4 has a great EVF, but a terrible eyecup. Find out if the G-Cup the eyecup solution you've been looking for in this review.
Review: G-Cup EVF Eyecup for the Panasonic GH4 - Suggestion of Motion
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Ideal viewfinder eyecup eyepiece for Panasonic DC-GH6 GH5II GH5 Mark II GH5S GH5 Camera Soft silicone material for eye comfort, ease your eye hitting
Soft Silicon Camera Viewfinder Eyecup Eye Cup Eyepiece Replacement for Panasonic Lumix DC-GH6 GH5 II GH5M2 DC-GH5S DC-GH5 Camera EVF Eyeshade
Review: G-Cup EVF Eyecup for the Panasonic GH4 - Suggestion of Motion
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Review: G-Cup EVF Eyecup for the Panasonic GH4 - Suggestion of Motion