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What is the PTP protocol?

How do can I access my camera using the PTP drivers , if I am using with Visere Captura on a Mac?  What if I am using

What about on a Windows machine?

Info
titleThe PTP Protocol

PTP, or Picture Transfer Protocol, is a standardized protocol used for transferring images from digital cameras to other devices such as computers, printers, and storage devices. Developed by the International Imaging Industry Association (I3A), PTP is widely supported by many camera manufacturers and is designed to facilitate the seamless transfer of images and related metadata. (See the Wikipedia Page.)

Key features of PTP include:

    1.    Device Communication: PTP allows digital cameras to communicate with computers and other devices without requiring special drivers or software.
    2.    Image Transfer: It supports the transfer of images in various formats, including JPEG, TIFF, and RAW, along with associated metadata such as date, time, and camera settings.
    3.    Control Functions: PTP enables remote control of camera functions, allowing users to capture images, adjust settings, and manage files directly from their computer or other connected devices.
    4.    Interoperability: As a standardized protocol, PTP ensures compatibility between different brands and models of digital cameras and various operating systems.

PTP has been extended and incorporated into other protocols such as Media Transfer Protocol (MTP), which provides additional functionality for managing multimedia files beyond just images.

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  1. Click on the gearbox icon and go to About
  2. From the About dialog click on the Enable/Disable Plug-ins
     
  3. Select the libPTPCamera.so and make sure the Canon, Sony, and Nikon camera plug-ins are unchecked. 
    Tip
    titleEnable only PTP

    Visere Captura searches for cameras using the manufacturer's SDKs first.  To enforce the use of the PTP library, disable the other camera libraries.

  4. Ensure the the Mac Preview program is not running.
    Warning
    titleMac Preview Conflict

    If Mac's Preview program is running, then Visere Captura's PTP drivers cannot access the camera.

  5. Click OK and restart Visere Captura.
  6. If your camera is supported, Visere Captura will connect to it and show the type of controls available when you click the Control Camera button. For example, the Control Camera shows the following dialog for Canon's R100 camera:

    The Canon R100 is not fully supported by the Visere Captura PTP library, plugin at the time this article was written, and between of writing. Among the three types of PTP controls, the PTP library plugin can only control manage Live View and Configuration .  It for the Canon R100. Visere Captura has no support for Image CapturePTP support for “Image Capture” with the R100, but it does support the R100 via the Canon SDK drivers. This lack of PTP support is due to the libgphoto2 library not supporting the Canon R100 as of now. Once the Canon R100 is added to libgphoto2, we will update our PTP plugin, and Visere Captura will support the Canon R100 via PTP, too.

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