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| Lens Align MkII |
I recently read an article in Outdoor Photographer Magazine on fine tuning auto focus on a per lens basis. I learned that some cameras have a setting whereby one can micro adjust auto focus for a lens. I discovered that my camera, Canon 7D, is one which supports this feature.
I purchased the LensAlign MkII for this purpose. Following are my report and reactions.
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| Lens Align MkII |
I decided to try the Long Ruler since I had in mind my Sigma 50-500mm zoom lens, a 1990's model.
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| Lens Align MkII |
The distance to the Lens Align from the camera varies with focal length of the lens being tested.
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| Lens Align MkII Setup |
I did this on a rainy day and the working distance to the lens became an issue as the focal length of the lens increased. I needed 42.5 feet for my Sigma 50-500 mm. I had to redo the shots on the second day because I had not aligned the Lens Align MkII properly with the image sensor in the camera. I eventually found that shooting available light under an incandescent light worked best since I had to shoot through a doorway. I used spot metering for this.
More tomorrow.
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