Yes, when photons striking the crystals start to change their chemistry.
When I have some time to do the post-processing.
This provides a convenient solution to the following question: Tamás, remember those pics you took 6 months ago at your daughter’s recital / epic hike / visit to the zoo / …? When are we going to see them?
The answer is that those images don’t exist yet, so stop bothering me and let me browse lens reviews on the net in peace.
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Which incidentally reminds me, way off our topic, of a discussion in school many years ago about abortion:
Teacher: “But when does life really begin, then?”
Student: “After the final exams!”
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Hum, when it’s viewed by someone ? 
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