Unknown lens (& also known lens)

I had taken some photos from my Canon EOS 5D Mark II, using the the 24-105mm/f4.0L IS USM lens.
But on importing them into Lightroom 2.3, about 25-30% of the photos show "Unknown Lens" under metadata, whereas 70-75% of them correctly show "24-105mm f/4L IS USM"
Is it some standard/ known issue of Lightroom? Is there anyway to fix those few hundred photos so that they show the correct lens info?
Any tips/ advice greatly appreciated. Thx.

I don't recall any reports of this nature, so it's certainly not standard.
Lightroom gets the info from the Exif embedded into the original file by the camera. If some are showing the lens as Unknown then it's very likely due to the camera lens combination. Establishing what that might be will require some detective work at your end. For example, was the lens attached to the camera via a non Canon extender? Was the lens properly attached? Have you tried cleaning the contacts on the lens and camera?
Fixing the images you've already shot can be achieved in at least two ways. The first involves editing the actual Exif in each file using an application called ExifTool http://www.sno.phy.queensu.ca/~phil/exiftool/ Unfortunately, I can't offer any guidance on how you would go about it with this application. The second method involves saving the metadata for each file as an XMP sidecar (Save metadata to file in Lr Metadata menu) then using a text editor to search and replace ** the bad lens info. Most text editors can run this type of process as a batch, so it doesn't take long. When the files are fixed you would then use the Read metadata from file menu option to import the updated Exif.
Search for <aux:Lens>Unknown</aux:Lens>
Replace with <aux:Lens>EF24-105mm f/4L IS USM</aux:Lens>
Edit: the following link will take you to a GUI front end for ExfTool http://freeweb.siol.net/hrastni3/ However, I don't no whether it allows you to edit the lens type

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You mention that 'most' of your files are DNG. Try
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In past I took photos using unknown lens at that times.
With new version I have noticed the lens is already known to LR,
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But previously imported fotos are still listed under
unknown lens
in search by metadata panel.
Is there a way to "tell" LR to update it even for old photos?

Try 'Read Metadata from File'.
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Hello,
I see a strange behaviour in Apple's Aperture (latest version).
When I import new pictures, taken by a Samsung NX1000 and open the pic the first time it looks sharp.
After less than a second Aperture does something and I see the picture changes from sharp to blurry.
When I open the pic in Mac Finder the picture looks great.
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Hope you can help.
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Hi everyone,
I imported a few raw files in lightroom 3.4.1 (mac version, but this is irrelevant), all of them are from Sony cameras and different lenses.
From the command line, exiftool always reports the correct camera model/lens, but lightroom often does not.
From the exiftool documentation, it seems that Sony has a specific EXIF tag for the lens model, called "LensID".
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In my opinion, it is not possible to get a reliable lens identification with Sony/Minolta cameras unless you have a lens lookup list which fits your actual lens collection. So that means that you either have to buy lenses which fits the lookup list in your identification tool, or use an identification tool which allows you to modify the lookup list. The latter option excludes using Lightroom for lens identification, as far as I know. I don't know about exiftool.
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Thank you!
This question was solved.
View Solution.

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the metadata in aperture shows my lens info as unknown (i am using 6-bit coded lens), also the aperture is not displaying.
what is wrong??

Try 'Read Metadata from File'.
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My Tamron 10-24 is listed as Unknown Lens

Any way to fix this?
Details are:
Lightroom version: 5.3 [938183]
Operating system: Windows 8 Business Edition
Version: 6.2 [9200]
Application architecture: x64
System architecture: x64
Camera Pentax K5 WIth latest Firmware 1.16
Shooting Format - DNG
Info from EXIF tool:
Lens Type                       : Tamron SP AF 10-24mm F3.5-4.5 Di II LD Aspherical [IF]
Lens ID                         : Tamron SP AF 10-24mm F3.5-4.5 Di II LD Aspherical [IF]
Amy Ideas? I've copied the full output of exif tool below in case other lines help someone smarter than me in this are.
Thanks, Jim
ExifTool Version Number         : 9.54
File Name                       : _K5_0175.DNG
Directory                       : D:/Photos/2014/2014-03-23
File Size                       : 25 MB
File Modification Date/Time     : 2014:03:23 09:49:46-07:00
File Access Date/Time           : 2014:03:23 10:48:26-07:00
File Creation Date/Time         : 2014:03:23 10:48:26-07:00
File Permissions                : rw-rw-rw-
File Type                       : DNG
MIME Type                       : image/x-adobe-dng
Exif Byte Order                 : Big-endian (Motorola, MM)
Make                            : PENTAX
Camera Model Name               : PENTAX K-5
Orientation                     : Horizontal (normal)
Software                        : K-5 Ver 1.16
Modify Date                     : 2014:03:23 09:49:44
Artist                          : JIM CRUICKSHANK
Image Width                     : 4992
Image Height                    : 3284
Bits Per Sample                 : 14
Compression                     : JPEG
Photometric Interpretation      : Color Filter Array
Strip Offsets                   : 162048
Samples Per Pixel               : 1
Rows Per Strip                  : 3284
Strip Byte Counts               : 24742950
X Resolution                    : 300
Y Resolution                    : 300
Planar Configuration            : Chunky
Resolution Unit                 : inches
CFA Repeat Pattern Dim          : 2 2
CFA Pattern 2                   : 2 1 1 0
CFA Layout                      : Rectangular
Black Level Repeat Dim          : 2 2
Black Level                     : 0 0 0 0
White Level                     : 15864
Default Scale                   : 1 1
Default Crop Origin             : 22 10
Default Crop Size               : 4928 3264
Bayer Green Split               : 0
Anti Alias Strength             : 1
Subfile Type                    : Reduced-resolution image
Primary Chromaticities          : 0.64 0.33 0.21 0.71 0.15 0.06
Y Cb Cr Coefficients            : 0.299 0.587 0.114
Y Cb Cr Sub Sampling            : YCbCr4:2:2 (2 1)
Y Cb Cr Positioning             : Co-sited
Copyright                       : Jim Cruickshank
Exposure Time                   : 1/50
F Number                        : 4.5
Exposure Program                : Creative (Slow speed)
Date/Time Original              : 2014:03:23 09:49:44
Create Date                     : 2014:03:23 09:49:44
Flash                           : Off, Did not fire
Focal Length                    : 24.0 mm
Sensing Method                  : One-chip color area
Custom Rendered                 : Normal
Exposure Mode                   : Auto
Focal Length In 35mm Format     : 36 mm
Scene Capture Type              : Standard
Subject Distance Range          : Close
GPS Version ID                  : 2.3.0.0
DNG Version                     : 1.1.0.0
DNG Backward Version            : 1.1.0.0
Unique Camera Model             : PENTAX K-5
Color Matrix 1                  : 0.963470459 -0.4771881104 -0.07902526855 -0.34
95941162 0.9834136963 0.4286651611 -0.01779174805 0.03717041016 0.6799163818
Color Matrix 2                  : 0.8302001953 -0.2508850098 -0.1111907959 -0.39
95361328 1.230117798 0.1880645752 -0.09773254395 0.1713256836 0.6513366699
Analog Balance                  : 1 1 1
As Shot Neutral                 : 0.4848484848 1 0.5541125541
Baseline Exposure               : -0.5466766357
Baseline Noise                  : 1
Baseline Sharpness              : 1
Linear Response Limit           : 1
Pentax Version                  : 7.0.0.0
Pentax Model Type               : 0
Preview Image Size              : 640x480
Preview Image Length            : 33984
Preview Image Start             : 35680
Pentax Model ID                 : K-5
Date                            : 2014:03:23
Time                            : 09:49:44
Quality                         : RAW
Flash Mode                      : Off, Did not fire; Internal
Focus Mode                      : AF-S (Focus-priority)
AF Point Selected               : Auto
ISO                             : 3200
Exposure Compensation           : 0
Metering Mode                   : Multi-segment
Auto Bracketing                 : 0 EV, No Extended Bracket
White Balance                   : Auto
Saturation                      : Normal
Contrast                        : Med High
Sharpness                       : Med Hard
DSP Firmware Version            : 1.16.26.29
CPU Firmware Version            : 1.16.26.29
Effective LV                    : 5.1
Picture Mode                    : Auto Program (Shallow DOF); 1/3 EV steps
Drive Mode                      : Single-frame; No Timer; Shutter Button; Single
Exposure
Sensor Size                     : 24.122 x 15.976 mm
Color Space                     : Adobe RGB
Image Area Offset               : 22 10
Raw Image Size                  : 4928x3264
Preview Image Borders           : 28 28 0 0
Lens Type                       : Tamron SP AF 10-24mm F3.5-4.5 Di II LD Aspheri
cal [IF]
Camera Temperature              : 16 C
AE Lock                         : Off
Noise Reduction                 : Off
Flash Exposure Comp             : 0
Image Tone                      : Bright
SR Result                       : Stabilized
Shake Reduction                 : On (7)
SR Half Press Time              : 1.72 s
SR Focal Length                 : 24 mm
Shutter Count                   : 10161
Faces Detected                  : 0
Face Position                   : 0 0
Raw Development Process         : 8 (K-5,K-5II,K-5IIs)
Hue                             : Normal
White Balance Auto Adjustment   : On
Tungsten AWB                    : Subtle Correction
Dynamic Range Expansion         : Off
World Time Location             : Hometown
Hometown DST                    : No
Destination DST                 : No
Hometown City                   : Vancouver
Destination City                : Vancouver
High/Low Key Adj                : 0
Contrast Highlight              : 0
Contrast Shadow                 : 0
Contrast Highlight/Shadow Adj   : Off
Fine Sharpness                  : Off; Normal
High ISO Noise Reduction        : Medium; Active (Medium)
AF Adjustment                   : 0
Monochrome Filter Effect        : None
Monochrome Toning               : None
Face Detect                     : Off; 0 faces detected
Face Detect Frame Size          : 0 0
Shadow Correction               : Off
ISO Auto Parameters             : Standard
Distortion Correction           : Off
Chromatic Aberration Correction : Off
Vignetting Correction           : Off
Bleach Bypass Toning            : Off
Black Point                     : 0 0 0 0
White Point                     : 16896 8192 8192 14784
Picture Mode 2                  : Auto PICT
Program Line                    : MTF
E-Dial In Program               : Tv or Av
Aperture Ring Use               : Permitted
Flash Options                   : Normal
Metering Mode 2                 : Multi-segment
AF Point Mode                   : Auto
Focus Mode 2                    : AF-S
AF Point Selected 2             : Auto
ISO Floor                       : 100
Drive Mode 2                    : Single-frame
Exposure Bracket Step Size      : 0.3
Bracket Shot Number             : n/a
White Balance Set               : Auto
Multiple Exposure Set           : Off
Link AE To AF Point             : On
ISO Auto                        : On
AE Exposure Time                : 1/47
AE Aperture                     : 4.6
AE ISO                          : 2934
AE Xv                           : 0
AEB Xv                          : 0
AE Min Exposure Time            : 1/7723
AE Program Mode                 : Shallow DOF Program
AE Aperture Steps               : 0
AE Max Aperture                 : 4.4
AE Max Aperture 2               : 4.6
AE Min Aperture                 : 32
AE Metering Mode                : Multi-segment
Flash Exposure Comp. Setting    : 0
Level Indicator                 : 252
Nominal Max Aperture            : 4.8
Nominal Min Aperture            : 32
Max Aperture                    : 4.6
AE Metering Segments            : 2.5 2.8 4.1 4.4 4.6 4.9 5.0 5.0 4.8 4.6 4.1 3.
3 3.1 3.9 4.3 3.8 4.9 4.5 4.8 4.3 3.9 3.9 4.4 3.9 3.9 3.9 4.1 5.5 5.6 5.3 5.0 4.
5 4.3 3.5 2.9 3.5 3.9 3.9 4.1 3.9 3.9 4.3 4.3 3.8 2.8 1.9 3.1 3.8 4.8 5.0 4.9 4.
0 4.1 3.4 4.0 3.4 3.1 3.3 3.5 3.9 4.8 3.9 2.8 2.8 2.5 3.3 3.0 2.9 3.4 3.6 2.6 2.
4 2.1 2.1 2.5 2.3 2.8
Flash Metering Segments         : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0
Slave Flash Metering Segments   : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0
Manufacture Date                : 2010:10:18
Production Code                 : 2.1
Internal Serial Number          : 17038
Power Source                    : Body Battery
Body Battery State              : Full
Body Battery Voltage 1          : 7.58 V
Body Battery Voltage 2          : 7.25 V
Body Battery Voltage 3          : 7.84 V
Body Battery Voltage 4          : 7.45 V
AF Predictor                    : -1
AF Defocus                      : 0
AF Integration Time             : 30 ms
AF Points In Focus              : Center (horizontal)
Kelvin WB Daylight              : 5205 0 2.088134765625 1.4703369140625
Kelvin WB 01                    : 2500 0 1.140869140625 2.8192138671875
Kelvin WB 02                    : 2630 0 1.2059326171875 2.6483154296875
Kelvin WB 03                    : 2780 0 1.2783203125 2.4813232421875
Kelvin WB 04                    : 2940 0 1.352294921875 2.331787109375
Kelvin WB 05                    : 3130 0 1.435791015625 2.1839599609375
Kelvin WB 06                    : 3330 0 1.5185546875 2.054931640625
Kelvin WB 07                    : 3570 0 1.6116943359375 1.9281005859375
Kelvin WB 08                    : 3850 0 1.711669921875 1.8084716796875
Kelvin WB 09                    : 4170 0 1.8157958984375 1.69970703125
Kelvin WB 10                    : 4550 0 1.9266357421875 1.597900390625
Kelvin WB 11                    : 5000 0 2.0418701171875 1.504638671875
Kelvin WB 12                    : 5560 0 2.164794921875 1.416748046875
Kelvin WB 13                    : 6250 0 2.29052734375 1.3365478515625
Kelvin WB 14                    : 7140 0 2.4205322265625 1.26318359375
Kelvin WB 15                    : 8330 0 2.5526123046875 1.196044921875
Kelvin WB 16                    : 10000 0 2.6844482421875 1.13525390625
WB Shift AB                     : 0
WB Shift GM                     : 0
EV Steps                        : 1/3 EV Steps
Sensitivity Steps               : As EV Steps
Camera Orientation              : Horizontal (normal)
Serial Number                   : 3842570
Level Orientation               : Horizontal (normal)
Composition Adjust              : Off
Roll Angle                      : 2
Pitch Angle                     : -6.5
Composition Adjust X            : 0
Composition Adjust Y            : 0
Composition Adjust Rotation     : 0
WB RGGB Levels Daylight         : 17257 8192 8192 13072
WB RGGB Levels Shade            : 20620 8192 8192 9756
WB RGGB Levels Cloudy           : 18594 8192 8192 11177
WB RGGB Levels Tungsten         : 10371 8192 8192 24250
WB RGGB Levels Fluorescent D    : 21309 8192 8192 12598
WB RGGB Levels Fluorescent N    : 18270 8192 8192 14019
WB RGGB Levels Fluorescent W    : 16609 8192 8192 17334
WB RGGB Levels Flash            : 19567 8192 8192 12030
WB RGGB Levels Fluorescent L    : 13895 8192 8192 21692
WB RGGB Levels User Selected    : 17257 8192 8192 13072
Contrast Detect AF Area         : 0 0 0 0
Camera Temperature 2            : 16.1 C
Camera Temperature 3            : 16.1 C
Camera Temperature 4            : 16 C
Camera Temperature 5            : 16 C
Calibration Illuminant 1        : Standard Light A
Calibration Illuminant 2        : D65
Aperture                        : 4.5
CFA Pattern                     : [Blue,Green][Green,Red]
Image Size                      : 4992x3284
Lens ID                         : Tamron SP AF 10-24mm F3.5-4.5 Di II LD Aspherical [IF]
Preview Image                   : (Binary data 33984 bytes, use -b option to ext
ract)
Scale Factor To 35 mm Equivalent: 1.5
Shutter Speed                   : 1/50
Circle Of Confusion             : 0.020 mm
Field Of View                   : 53.1 deg
Focal Length                    : 24.0 mm (35 mm equivalent: 36.0 mm)
Hyperfocal Distance             : 6.39 m
Light Value                     : 5.0
-- press any key --

Thanks Tony,
Yes the supplied profile works - in my test shots it corrects distortion and vignetting nicely - but it is a pain to have to pick the proffile by hand for each shot.
My real issue is Lightroom not correctly identifying the lens and listing it as "Unknown" in the meta data. Was hoping there was a way to teach lightroom to recognize it - or a config file to hack to make it recognize the lens.
For testing puposes I changed the raw format of my Pentax from DNG to PEF but got the saame result.
Anyone else have ideas?
Jim

Unknown camera and unknown lens

Hello,
For some reason today, Aperture is not recognizing my camera or lens when I import images from my memory card. There is no photo or exif metadata being reported by Aperture for the photo's imported today. Photo's that were imported last Monday have the correct photo and exif metadata.
Photo's were taken with a Nikon D7000 and 35mm f1.8 DX lens. I used ViewNX2 to grab the metadata from one of the photo's on the memory card and the camera make and lens information are correct. When I open the file in Preview.app I can see the following metadata in the "Exif" tab:
Color Space: sRGB
Components Configuration: 1, 2, 3, 0
Compressed Bits Per Pixel: 4
Contrast: Normal
Custom Rendered: Normal process
Date Time Digitized: 2012-10-14 11:13:36 AM
Date Time Original: 2012-10-14 11:13:36 AM
Digital Zoom Ratio: 1
Exif Version: 2.3
Exposure Bias Value: 0
Exposure Mode: Auto exposure
Exposure Program: Normal program
Exposure Time: 1/80
File Source: DSC
Flash: Flash did not fire, compulsory flash mode
FlashPix Version: 1.0
FNumber: 1.8
Focal Length: 35
Focal Length In 35mm Film: 52
Gain Control: Low gain up
ISO Speed Ratings: 400
Light Source: unknown
Max Aperture Value: 1.6
Metering Mode: Pattern
Pixel X Dimension: 4,928
Pixel Y Dimension: 3,264
Saturation: Normal
Scene Capture Type: Standard
Scene Type: A directly photographed image
Sensing Method: One-chip color area sensor
Sharpness: Normal
Subject Distance Range: unknown
Sub-second Time: 60
Sub-second Time Digitized: 60
Sub-second Time Original: 60
User Comment:
White Balance: Auto white balance
AFInfo: 0.4147727, 0.6662071, 0.04261364, 0.0536152, n, 0.4786932, 0.6662071, 0.04261364, 0.0536152, n, 0.5426136, 0.6662071, 0.04261364, 0.0536152, n, 0.171875, 0.5868566, 0.04261364, 0.0536152, n, 0.2315341, 0.5868566, 0.04261364, 0.0536152, n, 0.2911932, 0.5868566, 0.04261364, 0.0536152, n, 0.3508523, 0.5868566, 0.04261364, 0.0536152, n, 0.4147727, 0.5696998, 0.04261364, 0.0536152, n, 0.4786932, 0.5696998, 0.04261364, 0.0536152, n, 0.5426136, 0.5696998, 0.04261364, 0.0536152, n, 0.6065341, 0.5868566, 0.04261364, 0.0536152, n, 0.6661932, 0.5868566, 0.04261364, 0.0536152, n, 0.7258523, 0.5868566, 0.04261364, 0.0536152, n, 0.7855114, 0.5868566, 0.04261364, 0.0536152, n, 0.171875, 0.4731924, 0.04261364, 0.0536152, n, 0.2315341, 0.4731924, 0.04261364, 0.0536152, n, 0.2911932, 0.4731924, 0.04261364, 0.0536152, n, 0.3508523, 0.4731924, 0.04261364, 0.0536152, n, 0.4147727, 0.4731924, 0.04261364, 0.0536152, n, 0.4786932, 0.4731924, 0.04261364, 0.0536152, F, 0.5426136, 0.4731924, 0.04261364, 0.0536152, n, 0.6065341, 0.4731924, 0.04261364, 0.0536152, n, 0.6661932, 0.4731924, 0.04261364, 0.0536152, n, 0.7258523, 0.4731924, 0.04261364, 0.0536152, n, 0.7855114, 0.4731924, 0.04261364, 0.0536152, n, 0.171875, 0.3595282, 0.04261364, 0.0536152, n, 0.2315341, 0.3595282, 0.04261364, 0.0536152, n, 0.2911932, 0.3595282, 0.04261364, 0.0536152, n, 0.3508523, 0.3595282, 0.04261364, 0.0536152, n, 0.4147727, 0.376685, 0.04261364, 0.0536152, n, 0.4786932, 0.376685, 0.04261364, 0.0536152, n, 0.5426136, 0.376685, 0.04261364, 0.0536152, n, 0.6065341, 0.3595282, 0.04261364, 0.0536152, n, 0.6661932, 0.3595282, 0.04261364, 0.0536152, n, 0.7258523, 0.3595282, 0.04261364, 0.0536152, n, 0.7855114, 0.3595282, 0.04261364, 0.0536152, n, 0.4147727, 0.2801777, 0.04261364, 0.0536152, n, 0.4786932, 0.2801777, 0.04261364, 0.0536152, n, 0.5426136, 0.2801777, 0.04261364, 0.0536152, n
Flash Compensation: 0
Focus Distance: 0.376
Focus Mode: 1
Image Number: 8,823
Image Stabilization: 0
Lens ID: -2,147,483,648
Lens Info: 35, 35, 1.8, 1.8
Lens Model: AF-S DX Nikkor 35mm f/1.8G
Serial Number: (removed)
I noticed the Lens ID in the Aperture metadata shows -2,147,483,648. That seems odd to me. However, the Lens Model, and Lens Info appear correct. I checked the Lens ID number with Preview for one of the photo's in Aperture where the metadata appears correctly and it is the same -2,147,483,648 number. So, I surmise my camera likely does not use this field. From the "TIFF" tab I have the following metadata:
Artist:
Copyright:
Date Time: 2012-10-14 11:13:36 AM
Make: NIKON CORPORATION
Model: NIKON D7000
Orientation: 1 (Normal)
Resolution Unit: inches
Software: Ver.1.02
X Resolution: 300
Y Resolution: 300
The Make (Nikon Corporation) and Model (Nikon D7000) appear correctly. There is a "Nikon" tab as well which reports:
Flash Setting: NORMAL
Focus Mode: AF-S
ISO Setting: 0, 400
Lens Type: 6
Quality: FINE
Shooting Mode: 1
Shutter Count: 8,823
White Balance Mode: AUTO1
None of this metadata makes it into Aperture for any of the photo's imported today even though the metadata is being viewed with Preview directly from the corresponding JPG files imported into the Aperture library.
Other information that may or may not be relevant:
I reinstalled Aperture a little over a week ago because the names of the adjustment bricks suddenly changed to names that all started with "DG..."
Adobe Flash suddenly stopped working when viewing an online video today and I could not view a flash video from any website after that. I uninstalled and reinstalled Flash.
OS X 10.8.2 supplemental update was installed today after I noticed this problem (from 10.8.2).
Any idea's?
Steve

Update.
I trashed the preferences and moved the ~/Library/Application Support/Aperture folder. No change.
I created a new library, imported a photo and then could not see the project. Quit and Aperture will not open the library but I can open it with iPhoto. Sure enough, the imported photo does not have the photo or exif metadata. However, if I create a duplicate of the exact same photo from the master directory in the library and import it again using iPhoto, the metadata appears.
So, definitely an Aperture issue. Will try another reinstall.

Unknown lens (& also known lens)

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