If you find yourself swapping lenses throughout a project, or cutting between multi-camera angles you'll find your footage will be easier to match looks if you have a matched set of lenses. Color, Contrast, Sharpness, and more could look quite different if you're just using a random set of mixed lenses. Probably the most talked about affordable set of lenses for video use are the Rokinon Cine DS Lenses. The 'DS' is a more improved version of the original Rokinon manual photo lenses that has better optical coatings and have been 'matched' to have a more consistent look across the set.
Even though I feel Canon L series lenses are optically better, I ended up selling many of my Canon L series Autofocus lenses just because I wanted to work more with Manual Focus lenses, de-clicked apertures, with a matched 'look' when doing video projects. Not to mention I haven't been shooting much with Canon DSLRs. In fact, just one Canon 85mm F/1.2L lens paid for an entire bundle of Rokinon Cine DS Lenses. That's just how affordable a complete set is.
Personal set 24mm, 35mm, 50mm, and 85mm Rokinon Cine DS Lenses seen w/ GH4 and A7sII
If you're working with many of today's mirrorless cameras, these lenses are highly adaptable and cover a full frame sensor. Unlike camera bodies, lenses like these also hold their values really well, so I feel it's a good investment for people starting out in video. You can always sell them off later if you decide to upgrade to set of true Cine Primes. Though, it's not uncommon to see just how many people are throwing these lenses on even high end cameras like the BlackMagic Design or RED these days.
So if you're looking for a decently matched set of lenses for video work, the '4pc Lens Bundle' is currently discounted an Instant Savings of -$350 OFF which includes the most popular Rokinon focal lengths 24mm, 35mm, 50mm, and 85mm (found here).