Should I buy a full-frame or APS-C mirrorless camera?

Full-frame sensors (Sony a7 IV, Canon R6 II, Sony a7 V) deliver better low-light performance, shallower depth of field, and more dynamic range, but bodies and lenses cost substantially more. APS-C bodies like the Sony a6400 and Canon R50 are lighter, cheaper, and more than enough resolution for most hobbyists, social content, and travel. Reviewers across the specialist subreddits we read consistently tell beginners that lens budget matters more than sensor size.