ferratus wrote in post #19047313
What is a quality cheap lens or lenses ) that one would suggest for the 6D?
Cheap is relative.
Before you get too far into it, determine what you intend to shoot. Buy lenses for that purpose.
If you want convenient all-round lenses that don't cost a fortune, get f/4 zooms. The 6D produces lovely images up to ISO 6400. ISO 12k is usable. 2.8 zooms will set you back financially but if you shoot low light frequently the extra stop can be worth the price. Beyond that you're going to need flash.
If you're doing portraits, like the shallow DOF thing, and don't mind moving around to get the framing you want, consider primes. They're generally less expensive than zooms but they're more demanding to use in some situations.
Suggestions. All Canon EF. Emphasis on (relatively) cheap.
Zooms
24-105 4.0 IS v1
70-200 4.0 IS v1
100-400 4.5-5.6 IS v1
Primes
35 2.0
50 1.8 STM
85 1.8
If you have $$, these v1 primes can be found used in good condition although they tend to retain their value
35 1.4
50 1.2
135 2.0
If you're into manual focus lenses, a chipless EF-M42 adapter opens an array of inexpensive options. There's a number of really good Pentax M42 mount lenses that have unique characteristics. Takumar & Helios lenses can be found on eBay for a reasonable price from time to time. They're also common at second hand stores, flea markets and estate sales. Check out Pentax Forums
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I purchased my 6D in 2013. It's a good all round performer. The AF system is rudimentary but it gets the job done. The sensor is excellent in low light. RAW files are easy to work with. The body is reasonably durable. I've taken mine everywhere. Subjected it to light rain, snow, sub-zero temps and gravity. It's still rockin' like it's brand new.