The H6517ST is a short throw, home cinema projector offering from Acer with a bright, high definition image. As a Full HD 1080p projector, the h6517ST will show Blu ray DVDs in their true form on a big screen. It can cope with a really large image so if you want to have some friends round to watch the football or rugby then pop it on a coffee table and project onto the wall to get the big screen effect. As a short throw projector it is great if you are limited on space as you can place it close to the screen. It can also be used within businesses and if you are presenting then you will eliminate shadows on the screen and also you will not have glare shining into your eyes. With 3000 lumens, the H6517ST will be comfortable doing this during the day too – no need to turn the lights down or off to still get a clear image. The high contrast ratio of 10,000:1 will make dark scenes in movies and games look much defined with a brilliant level of greys and blacks. Multiple HDMI inputs will allow you to connect more than one device at a time for example a Sky+ box and a PlayStation 4, and have the ability to switch between them without swapping cables around. It also has a 2W built in speaker for added audio but for large audiences additional audio would be neccessary. On reflection, the H6517ST is a good short throw projector but there are many other options out there too.