Renze de Vries
Well-known member
Gijs,This discussion reminds me of a story told to me by a Zeiss representative. He had a customer, who always looked into the new binocular (he perhaps wanted to buy) through the objective side and he took a flash light to see "spots"inside the binocular. Now light scattering can occur by particles/structures that are normally hardly or not visible by eye, but that customer decided that quality control or quality of this binocular was not up to his desired standard if he saw such a tiny scattering. Upon normal use of the binocular no problem could be seen.
Gijs van Ginkel
This is exactly what happened to me recently. A guy, who had taken an interest in one of my binoculars, at least this was what he told me, came by to check the instrument. He took his cell phone, switched the flash light facility on and inspected the internals of my pristine binocular (it was factory serviced a few months ago). This went on for at least 15 minutes. Then he told me he'd spotted a particle of dust. What he didn't know was that I spotted him too, and this within 15 seconds: the guy was a joke.
Renze