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.
The mathematical calculation of fnumbers does not always match the expected
values: For example for f/3.5 the precise mathematical value is 3.564...,
which gets rounded to 3.6. Fix this special case by returning a value
closer to the expected value.
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"
* avoid re-declaration of constant variables
* Replace pthreads critical section with std::mutex
* ci - better naming
* cmake - increase minimum version to 3.11. Use project DESCRIPTION
* fix - do not treat string::find() return type as bool
* remove conditions that were always true
* remove condition that were always false
* Remove EXV_HAVE_GMTIME_R which is not used anymore
* pixelWidth_ was inherited from Exiv2::Image
The width & height variables in the TiffImage class need to be mutable
to be able to change their values on the getters pixelHeight() and
pixelWidth() ... Do not ask me why ...
* Remove superfluous if
* pvs:V766 item with identical key added already
* pvs:V730 not all members were initialized (time)
* pvs:V730 not all members are initialized
* pvs:v668 no point in testing pointer against null after new
* pvs:V1048 variable assigned the same value
* replace c-style dynamic vector with std one
* pvs:547 fakeData is always true
* Remove useless constructor in derived class
* pvs:V690 modern way to disable copy-ctor
* Replace malloc/free with new/delete. No need to check for null
* pvs:V1028 cast operands and not result
* Remove custom MIN/MAX functions
* pvs:V595 pointer used before verified against null
* pvs: index used before being checked
* pvs:V1028 possible overflow. Cast operands
* pvs:v575 potential null pointer passed to other functions
* pvs:V547 deal with always true/false expressions
* pvs:V560 part of conditional expressions always false or true
* pvs:V701 possible break in realloc -> move to std::vector
* Make some classes 'final'
* Replace sprintf with std::to_string()
* fix compilation on windows