Version 1.1
PTP v1.1 (ISO15740:2008) is an update to PTP that has recently been published by ISO.
As of the middle of 2008, most devices and operating systems do not yet support PTP v1.1. This updated version of PTP is fully backward-compatible with PTP v1.0, and offers optional performance, compatibility, and feature enhancements including:
- A mechanism for handling streaming content
- A mechanism to support multiple vendor extension sets
- Support for objects larger than the 4GiB size limit set by PTP v1.0, by requiring 64 bits (8 bytes) for object size
- Support for retrieval of ObjectHandles in enumerated chunks. This may reduce long response times for some devices that possess large numbers of objects
- Support for arbitrary resizing prior to image transmission (responder scaling). In PTP v1.0, image sizes might be requested in full-resolution or thumbnail size only
- Support for arrays of datasets. This can be used to reduce the number of required transactions necessary for device characterization from being a function of the number of objects on the device down to one
- A fast file characterization operation that exploits dataset arrays to request, in a single transaction, only the minimum data required to characterize a typical filesystem
- A new standard ObjectFormatCode to support the Digital Negative (DNG) file format
Read more about this topic: Picture Transfer Protocol
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