Aspect ratio [www.masterclass.com/articles/guide-to-aspect-ratios]

Backstage [Filmmaking Equipment Every Cinematographer Needs | Backstage]

Angel Films and Angel Rentals [www.angelfilms.com]

Oy Filmfotograferna Ab [www.suomenfilmfotograferna.fi]

Tiffen filters [The Tiffen Company - Camera Lens Filters | Explore All Tiffen Camera Filters]

P. Mutasen elokuvakonepaja [www.elokuvakonepaja.com]
Camera Rental House

Warner Bros [wbsf.warnerbros.com]
Studios Facilities.

Wikipedia: DVD [DVD - Wikipedia]

Skill Share [Videography for Beginners | Skillshare Blog]

Adobe [Video production: A beginner's guide | Adobe]