The new RF line is named F2.8L instead of f/2.8L (for example).
This patch makes the model names identically to the official
Canon lens names and the same names exiftool uses.
If multiple choices are possible they are now all reported. This
behaviour is now the same as it is in exiftool.
All lenses are tested in the new test_canon_lenses.py test
When searching for the Tamron lens, only the string "300mm" is searched in
the lens description, which also happens to be present for the Canon lens.
Since the Canon lens comes first in the list, it wins. Fix this issue by
prefixing the search string with a single space so it always has to match
the full focal length specification.
Lenses that have the exact same ID, focal length and aperture as some other
lens that comes earlier in the list (and thus always wins):
* 137, "Tamron SP 17-50mm f/2.8 XR Di II VC"
* 137, "Tamron SP 24-70mm f/2.8 Di VC USD"
* 161, "Sigma 28-70mm f/2.8 EX"
* 173, "Sigma 180mm EX HSM Macro f/3.5"
* 180, "Zeiss Milvus 50mm f/1.4"
* 183, "Sigma 150-600mm f/5-6.3 DG OS HSM | S"
* 254, "Tamron SP 90mm f/2.8 Di VC USD Macro 1:1 F004"
* 254, "Tamron SP 90mm f/2.8 Di VC USD Macro 1:1 F017"
Lenses that share their IDs with other lenses, but have no or an
unsupported focal length:
* 33, "Voigtlander or Carl Zeiss Lens"
* 131, "Sigma 4.5mm f/2.8 EX DC HSM Circular Fisheye"
Added Sigma 35mm/1.4 to lens id 368 and changed resolver to look at both focal length and aperture. Fixed canonEv so lenses with f/6.3 report as f/6.3 (they actually report f/6.2 to camera)
On Canon bodies and lens firmware 1.x, this lens identifies itself using
model number 150. Starting with firmware 2.x, this lens now identifies
itself using model number 368.
Exiv2 was correctly identifying the former but not the latter.
This commit also fixes a pre-existing bug in which exiv2 was not
correctly disambiguating lenses using model number 368.
This PR (and fix981_canonAutoFocus2) use a decoder listed in TiffMappingInfo to
decode Exif.Canon.AFInfo. The decoding function "manufactures" Exif tags such as
Exif.Canon.AFNumPoints from the data in Exif.Canon.AFInfo. These tags must never
be written to file and are removed from the metadata in
exif.cpp/ExifParser::encode().
Three of the tags created (AFPointsInFocus,AFPointsSelected, AFPrimaryPoint) are
bitmasks. As the camera can have up to 64 focus points, the tags are a 64 bit
mask to say which points are active. The function printBitmask() reports data
such as 1,2,3 or (none).
This decoding function decodeCanonAFInfo() added to TiffMappingInfo manufactures
the new tags. Normally, tags are processed by the binary tag decoder and that
approach was taken in branch fix981_canonAf. However, the binary tag decoder
cannot deal with AFInfo because the size of some metadata arrays cannot be
determined at compile time.
