Not affiliated with them but have used them ever since I was trying to solder and wondered why I couldn't focus close enough.
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As you age you inevitably run into the issue. The OptiVISOR is one solution:
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I am posting this because I just got the OptiLOUPE accessory and it works really well. I could read the markings on a SOD-123 diode:
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As I understand it the OptiVISOR has glass lenses and the OptiVISOR LX has plastic lenses. The plastic lenses may not be as good, so bear that in mind if you are looking.
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I have the DA-4 lenses for the OptiVISOR and they work well for soldering surface mount components. I have the DA-5 lenses on the way. Thought I would see how they compare to the DA-4.
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Mike M