● Fake HD - Sold as HD cameras, these cameras have a 480p (640x480) sensor but are up-scale to HD video, 1280x720 or 1280x960. Do not buy an 808 camera if the seller does not list the version number because you can expect to get anything including the worst possible 808 version.The playback doesn't look HD and the up-scaling waists CPU power and flash memory space. When you receive the camera test it to verify that you received what was described.Slow shutter time can cause motion blur and a high missing frame rate.The "rolling shutter" of most 808 cameras combined with mechanical vibration or horizontal movement can cause distortion known as the "Jell-O effect".150227 480p Aspect Ratio Concern - Most 808 480p cameras have a 640x480 image sensor (aspect ratio 1.33) but the record AVI video file is scaled to 720x480 (1.5). Use Crystal Disk Mark to measure the 512K random write speed and if it is less than 1.0MBps, don't use it.For objects in the video to be played at the correct aspect ratio, the AVI file must be scaled to aspect ratio 1.33, i.e. #16 (starting at US) seems to be the best 720p version. A 512K random write speed of 1.5MBps is recommended.Quality problems in some cameras to avoid: ● Underpowered HD - A real 720p (HD) image sensor is no guarantee of a high quality video.
A random-write-512K speed of 1 MBps or faster is usually required, and faster than 1.5 MBps is advised. Difficult things to try that require the case to be opened (two screws).
1080p or 720p video (1600x1200 image sensor is upscaled). BGA (ball grid array) damage - The camera module image sensor chip is usually BGA. If the 808 is dropped or used in an application like an RC airplane crash, mechanical shock can damage the BGA solder which can't be repaired unless the damage is in a replaceable internal camera module (i.e.808 #16).
Great micro soldering skill is required and disconnect the camera power while solderiing.
Prices are typical for cameras delivered from a seller in China to the US. A very slow card can sometimes lower the video quality.
120703 - 808 cameras are now available from many US sellers with good prices and faster delivery than China. #3 (about US) seems to be the best 480p version. 150227 - 480p BUYER BEWARE - The 480p H.264 camera being offered on e Bay does not exist. If the camera data rate is more than the card can write, a data overrun can occur.
Search for Liferealcam:
You can search Google or e Bay for "key chain DVR" or "808 camera" to find sellers.