In the modern era of the Internet, why should we have to look at low-quality adult entertainment? The answer is that you don't, which is why places such as High Res NSFW exist. The basic premise is that scenes over a certain quality are welcome, and that anything particularly noteworthy for its resolution and professional production is welcome. The subreddit is also closely tied in with the /r/UHDnsfw twin - a place that accepts pictures over 10,000 x 7500 pixels.
Anyway, back to /r/HighResNSFW and you'll find that there are just over 66,000 subscribers. The homepage of the site updates with new ultra quality content about once every 3-4 hours, meaning the homepage is refreshed regularly with a new batch of material. Typical resolutions for content include 2000 x 1333, 4000 x 2667, 3110 x 2075 and 3875 x 2583 pixels. Suffice to say that when it comes to quality, this place really knows how to deliver the cream of the crop. So yeah, for all of your high definition porn image needs, check out High Res NSFW on Reddit today.