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Taking Flat Files between sessions, Uwe Deutermann

Taking Flat Files between sessions

Taking Flat Files between sessions, Uwe Deutermann

Taking Flat Files between sessions

Description

Since I needed to switch a filter I wanted to make sure first that I have good flat files. Putting a Kindle showing a plain white picture on top of the lens does the trick :-)

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Taking Flat Files between sessions, Uwe Deutermann