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← All lessons Lesson 6 of 19 · 1 min

You will not know if a frame is good until later

The checks that decide whether a frame is usable run topside. This is unavoidable, so it is planned for instead: at least three frames at each photo point, with the charts re-seated between them.

Re-seating is the point, not a detail. Three frames shot in a burst from one placement all share whatever was wrong with that placement. Three independent placements give three independent chances.

Rejected frames are logged, with the reason, and the rejection rate is reported. It is not an embarrassment to be minimized by relaxing the standard. It is a measurement of your capture technique, and a diver who improves watches it fall between Dive 2 and Dive 3.

Quick check

Three questions, drawn at random from this lesson's set, one attempt each. The right answer is shown either way. Two of three opens the next lesson; fewer and you get another three. Nothing is recorded anywhere but this browser, and this is not the Knowledge Review — it is a way of showing the lesson was read.

Generated from the Reef Chronicler Student Handbook, version 0.04. The course documents are the authority; if these pages and they ever disagree, the documents are right.