gobiodon

Forum username: gobiodon
Real name: Marcell Nikolausz
Posts: 347
Active years: 2004–2023
Primary forums: Video Gear and Technique, Lights/Strobes/Lighting, Photography Gear and Technique
Specialization: Low-budget underwater videography, action cameras, underwater lighting techniques, video resolution theory

Community Role

gobiodon (Marcell Nikolausz) was one of Wetpixel’s longest-serving community members, with an active span of nearly 20 years from 2004 through 2023. Originally from Hungary and living in Germany, his username references the coral goby genus Gobiodon, reflecting his interest in marine biology. Nikolausz championed accessible underwater videography, demonstrating that compelling underwater video could be produced on a modest budget using action cameras and creative DIY solutions. His multi-part posts on low-budget videography were among the most educational contributions to the video section of the forum.

Notable Contributions

• Low-budget underwater videography series: In 2021, Nikolausz published an extensive multi-post guide to affordable underwater videography. He documented his experience with numerous action cameras (GoPro HERO, Yi 4K, Yi 4K+, Actionpro X9, Hawkeye Firefly 8SE, DJI Osmo Action) and shared practical techniques including using rocks and modified tent pegs as camera stabilizers, camouflaging white camera housings with nail polish to avoid spooking fish, and achieving good color through filters and careful depth management. His film won the freshwater category at Germany’s ActionCup video competition with a total gear budget of approximately 400 Euro (^[1]).

• GoBo underwater lighting: He initiated a discussion about using GoBo (Go Between) lighting modifiers underwater to control light spread and reduce backscatter — a technique borrowed from studio photography. While snoots were popular for restricting light, his suggestion of using flags to block light only in the direction between lens and subject was a novel approach. The thread generated helpful clarification about GoBo vs. flag vs. snoot terminology (^[2]).

• Video resolution limits discussion: Nikolausz sparked an important technical discussion about the theoretical resolution limits of underwater video systems, citing Pawel Achtel’s work on the Avatar 2 underwater camera system. He highlighted Achtel’s finding that dome ports limit resolution to approximately 2K equivalent sharpness (1,000 line pairs per picture width), and flat ports to approximately 1K. This raised the question of whether shooting at 5.3K or 6K with action cameras provided real benefit over 4K, generating extensive debate from experienced videographers (^[3]).

• Sony sensor discussions: He tracked developments in camera sensor technology, including Sony’s 25MP full-frame CMOS and 14MP APS-C CCD sensor announcements and their implications for underwater photography (^[4]).

• Sony RX0 discussion: He participated in evaluating the ultra-compact Sony RX0 as a potential underwater camera (^[5]).

Activity Profile

• Peak activity: 2006–2012, with continued contributions through 2023
• Started 15 forum threads
• 1 article mention
• Equipment: Sony NEX-5, GoPro HERO, Yi 4K, Yi 4K+, Actionpro X9, Hawkeye Firefly 8SE, DJI Osmo Action, Minolta Dynax 7000i (film era, Ikelite housing)
• Competition success: Winner, freshwater category, ActionCup video competition (Germany)
• Background: Started underwater photography during the film era using a Minolta Dynax 7000i in an Ikelite housing; transitioned to videography with a Sony NEX-5