3 of 3 people found the following review helpful
A great tool for those that want tack sharp focus from their lenses,
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This review is from: Datacolor SpyderLensCal SLC100 (Electronics)
I should have looked at the overall dimensions when I made the purchase. For some reason, I thought it would be bigger. When "assembled", the SpyderLensCAL SLC100 is nearly 6" square. Folded flat, it is approximately 8.5" x 5", easy enough to fit inside a camera bag if necessary. It is a nice piece of gear for calibrating lenses though, far better than my "MacGuyver'ed" attempts at one. I purchased it to calibrate my Canon EF 50mm F/1.2L since some of my images just seemed softer than I was expecting.
It's made of a sturdy plastic that folds down flat for easy storage. The focusing surfaces of the device are covered in matte finish plastic stickers. On my copy, the vertical plane sticker was slightly askew, but I didn't feel that it would affect focusing accuracy.
Overall, a great tool, but I deducted one star for price.