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In an earlier but unrelated project, the term "Picture Transfer Protocol" and the acronym "PTP" were both coined by Steve Mann, summarizing work on the creation of a Linux-friendly way of transferring pictures to and from home-made wearable computers, [2] at a time when most cameras required the use of Microsoft Windows or Mac OS device drivers ...
The USB video device class (also USB video class or UVC) is a USB device class that describes devices capable of streaming video like webcams, digital camcorders, transcoders, analog video converters and still-image cameras.
A webcam is a video camera which is designed to record or stream to a computer or computer network. They are primarily used in video telephony, live streaming and social media, and security. Webcams can be built-in computer hardware or peripheral devices, and are commonly connected to a device using USB or wireless protocol.
Many digital cameras can connect directly to a computer to transfer data:- Early cameras used the PC serial port. USB is now the most widely used method (most cameras are viewable as USB mass storage), though some have a FireWire port. Some cameras use USB PTP mode for connection instead of USB MSC; some offer both modes.
Windows Camera is an image and video capture utility included with the most recent versions of Windows and its mobile counterpart. It has been around on Windows-based mobile devices since camera hardware was included on those devices and was introduced on Windows PCs with Windows 8, providing users for the first time a first-party built-in camera that could interact with webcam hardware. [4]
The camera attaches directly to the USB port of a computer without the need for an eyepiece, and the images are shown directly on the computer's display. They usually provide modest magnifications (about 1× to 200×) without the need to use eyepieces, at cost very much lower than conventional stereomicroscopes. [1]
Trap focus is also possible on some Pentax (e.g. K-x and K-5), Nikon, and Canon EOS cameras. The EOS 1D can do it using software on an attached computer, whereas cameras like the EOS 40D and 7D have a custom function (III-1 and III-4 respectively) which can stop the camera trying to focus after it fails.
This camera integrates many new technologies and is designed for ease of use, sporting only four shooting modes: Still Images, Moving Images, Motion Snapshot and Smart Photo Selector and only two buttons for Power, Shutter and Record. [4]: 22 Nikon 1 J1 has an all-new Nikon 1 lens mount, which has made lens changes simpler and quicker. [5]
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