As creative as a body cap can get; It appears to be a protective body cap for your micro four-thirds camera, but this body cap also doubles as a fisheye lens with an 35mm equivalent focal length of 18mm. Item number: V325040BW000.
Mount Standard Micro Four Thirds System Standard Focal Length [35mm Equivalent Focal Length] 9mm [18mm] Lens Construction 5 elements in 4 Groups, 2 Aspherical lenses Dust, Splash Proof, Freezeproof No Angle of View 140 Degree AF System None, Manual Focus Only Zoom Mechanism None Closest Focusing Distance 7.87" Maximum Image Magnification 0.046x [35mm Equivalent Max. Image Magnification] [0.092x] Minimum Field Size NA Number of Blades 1 Maximum Aperture F8.0 Minimum Aperture F8.0 Filter Size NA Dimensions Diameter 2.2" x .5" Weight 1.05oz. Box Contents Lens Rear Cap (LR-2), Instruction Manual, *Specifications and design are subject to change without notice.
Review Summary for the Fisheye Body Cap Lens 9mm BCL-0980 (Black)
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Customer Reviews of the Fisheye Body Cap Lens 9mm BCL-0980 (Black)
April 10, 2015
Adding Metadata in Lightroom
This is a fun little lens. The only downside to the 9mm body cap lens is that photos taken with it will not have any lens metadata in them, as there’s no electronics in the lens and therefore the camera doesn’t know what lens is attached. Fortunately, it’s possible to add lens information, which can be useful when sorting or searching photos. There are a few ways to do this. I tried using exiftool and the LensTagger plugin, but couldn’t get either to work.
What worked was to create a XMP file for each photo, save it in the same location as the photos, and then import them into Lightroom. The lens information is saved in Lightroom’s database, and in a sidecar XMP file if you have that option enabled in Lightroom or use the “Save Metadata to File” command. The advantage of this approach is that the metadata is not written into the original RAW file, avoiding the potential of corrupting the file.
The XMP file that I created contains the following:
<?xml version="1.0" encoding="UTF-8"?>
<rdf:Description rdf:about="" xmlns:exif="http://ns.adobe.com/exif/1.0/">
<rdf:Description rdf:about="" xmlns:aux="http://ns.adobe.com/exif/1.0/aux/">
<aux:Lens>OLYMPUS 9mm F8.0</aux:Lens>
Note that the ApertureValue of 6 converts to an F-stop of 8.0. There is a similar MaxApertureValue field, but I could not get Lightroom to read the information correctly, so I didn’t include it in the XMP file (Lightroom will record the maximum aperture value as 0/256 in the XMP file and display it as an F-stop of 1.0). As for the name of the lens, I used the same format that Olympus uses for their other Micro 4/3 lenses, but I left out the “M.” as it’s not an M.Zuiko lens.
The XMP file must be saved as a plain text file with the same name as the photo, and the extension XMP. Creating multiple versions of the same file is relatively easy in Mac OS X (I have no idea about Windows). I press Command-D to duplicate the file, and keep pressing it until I have as many XMP files as I need, then I bulk rename them to match the RAW file names (which are usually in sequence).
April 04, 2015
A cute little lens
Easily opened in error in your bag and completely manual but, for little money, size and weight, it's a fun lens to have.
June 24, 2014
Cute cap lens
The fisheye cap lens is a cute little addition. It's not a real micro 4/3 lens in the sense that it does not connect to the camera's electronics. It's simply a cap with a non-trivial but manually-operated lens. The switch to open and close the lens is a little primitive, and can be easily bumped open if you have you're storing your camera loosely in a bag. But I find the lens quite useful in many fun situations where one may not want or need a very sophisticated lens, like say, chasing my boy around at the beach.
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