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10-13-2014, 10:21 PM | #1 |
focal length input for m42 teleconvertor 3x | |
10-13-2014, 10:23 PM | #2 |
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10-13-2014, 11:16 PM | #3 |
10-15-2014, 05:21 AM | #9 |
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3x, camera, input, input for m42, length, length input, m42, pentax help, photography, troubleshooting |
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