Mini Audi Car Key CMOS Spy Camera Digital Video Recorder Camcorder with TF Slot

Highlights

• Car key shaped mini digital video recorder
• Adopts CMOS image sensor and pin-hole lens hides in car key
• Able to take pictures and record videos
• Convenient to carry with keychain
• Suitable for recording the process of executing the law for policeman
• ----Collecting proof for lawyers
• ----Gathering news for reporters
• -----Spy
• Built-in 0 GB memory and supports TF card to expand storage
• Easy to connect to PC and playback video on the computer

Specification

• Video Format:AVI
• Video Resolution: 640 x 480
• Picture Format: JPEG
• Picture Resolution: 1280 x 1024
• Supporting System: Windows 7/ XP
• USB jack: Yes, for data transferring and charging
• Storage Capability: Built-in 0 GB memory and supports TF card & expandable to max 32 GB (Micro SD/T-Flash card Not included)
• Battery Type: Built-in high capacity lithium battery
• Color: Black & silver
• Dimension: 65 x 35 x 16mm (L x W x H)
• Net Weight: 23g

 Detail

What's in the box?

• 1 x Car Key Mini DV
• 1 x USB cable
• 1 x Manual

How Does a Pinhole Camera Work?

• Pinhole cameras are the one of the simplest and oldest types of cameras. In a pinhole camera, light passes through a light-proof container through a tiny hole. The light streams through the box and projects an image on the back of the box's interior, to which a piece of film has been affixed. An image then develops on the face of the film much in the same way that it does in a typical 35mm film camera. It is possible to purchase pinhole cameras, but most users choose to make their own. Pinhole cameras can easily be made from common household objects
• Because pinhole cameras have no focusing apparatus, the size, shape and distance of the hole from the film are important. Smaller holes will result in sharper images, and larger holes will create more diffuse images. However, the size of the hole also determines the amount of light exposure necessary to develop the image: smaller holes will require longer exposures, and larger ones will require shorter exposures
• In order to determine the proper diameter of the hole, the distance from the hole to the film at the back of the camera must first be measured. This distance is called the focal length. A mathematical formula can then be used to determine the size of the hole. One common formula used states that the diameter of the hole (d) = 0.0073 multiplied by the square root of the focal length (f)
• Whereas most modern film cameras have an exposure time of a fraction of a second, the exposure time for pinhole cameras is much longer by comparison and can range from a few seconds to a few hours depending on the desired effect. Exposing the hole for a few seconds will produce a still image if the scene was posed and none of the objects in the field moved

Warning

• Do not to use this product for any illegal purpose, otherwise you may be subject to prosecutions under applicable laws
• You should be aware that we are obliged to provide the information in connection with your purchase of this product to relevant administrative and judicial authorities at their request