| Subject: | Support for MakerNote for Nikon D70/D100 |
Attached is a patch (against TIFF.pm in Image::Info 1.16) which implements the ability to read the MakerNote EXIF tags for images created by Nikon D70 or D100 digital SLRs. Note that the patch leaves the EXIF prefix as "NikonD1" for these tags, for compatibility with existing software that's looking for them under that name. I've also added definitions for some more Nikon MakerNote tags, though there are still several undefined that look promising.
--- TIFF.pm.1.16 2004-04-18 09:06:57.000000000 -0400
+++ TIFF.pm 2004-04-21 07:57:59.000000000 -0400
@@ -37,6 +37,7 @@
);
my %nikon2_tags = (
+ 0x0001 => "NikonVersion",
0x0002 => "ISOSetting",
0x0003 => "ColorMode",
0x0004 => "Quality",
@@ -44,9 +45,12 @@
0x0006 => "ImageSharpening",
0x0007 => "FocusMode",
0x0008 => "FlashSetting",
+ 0x0009 => "FlashMetering",
+ 0x000B => "WBAdjustment",
0x000F => "ISOSelection",
0x0080 => "ImageAdjustment",
0x0082 => "AuxiliaryLens",
+ 0x0084 => "Lens",
0x0085 => "ManualFocusDistance",
0x0086 => "DigitalZoom",
0x0088 => { __TAG__ => "AFFocusPosition",
@@ -56,6 +60,9 @@
pack("xCxx",3) => "Left",
pack("xCxx",4) => "Right",
},
+ 0x008d => "ColorMode",
+ 0x0090 => "FlashType",
+ 0x0095 => "NoiseReduction",
0x0010 => "DataDump",
);
@@ -307,6 +314,8 @@
"NIKON E990" => [0, 'CoolPix', \%nikon2_tags],
"NIKON E995" => [0, 'CoolPix', \%nikon2_tags],
"NIKON CORPORATION NIKON D1" => [0, 'NikonD1', \%nikon2_tags],
+ "NIKON CORPORATION NIKON D70" => [-2, 'NikonD1', \%nikon2_tags],
+ "NIKON CORPORATION NIKON D100" => [-2, 'NikonD1', \%nikon2_tags],
"OLYMPUS OPTICAL CO.,LTD C2000Z" => [8, 'Olympus', \%olympus_tags],
"OLYMPUS OPTICAL CO.,LTD C2100UZ" => [8, 'Olympus', \%olympus_tags],
"OLYMPUS OPTICAL CO.,LTD C2500L" => [8, 'Olympus', \%olympus_tags],
@@ -799,15 +808,27 @@
if ($tag eq 'MakerNote' && exists $makernotes{$self->{Make}.' '.$self->{Model}}) {
my ($ifd_off, $tag_prefix, $sub) = @{$makernotes{$self->{Make}.' '.$self->{Model}}};
$self->{tag_prefix} = $tag_prefix;
- if ($ifd_off < 0) {
+ if ($ifd_off == -1) {
# fuji kludge - http://www.butaman.ne.jp/~tsuruzoh/Computer/Digicams/exif-e.html#APP4
my $save_endian = $self->{little_endian};
$self->{little_endian} = 1;
$ifd_off = $self->unpack("N", substr($val, 8, 4));
$self->add_fields($voff+$ifd_off, $ifds, $sub, $voff);
$self->{little_endian} = $save_endian;
- } else {
- $self->add_fields($voff+$ifd_off, $ifds, $sub);
+ } elsif ($ifd_off == -2) {
+ # Nikon D70/D100 kludge -- word "Nikon" and 5
+ # bytes of data is tacked to the front of
+ # MakerNote; all EXIF offsets are relative to
+ # MakerNote section
+ my ($nikon_voff);
+ $nikon_voff = 0;
+ if (substr($val, 0, 5) eq 'Nikon') {
+ $nikon_voff = $voff+10;
+ }
+ #print "IFD_OFF $ifd_off NIKON_VOFF $nikon_voff\n";
+ $self->add_fields($voff+18, $ifds, $sub, $nikon_voff);
+ } else {
+ $self->add_fields($voff+$ifd_off, $ifds, $sub)
}
delete $self->{tag_prefix};
next FIELD;