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Tintype Video Effect

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Settings are written to the URL as you change them. Nothing differs from the defaults yet.

Give a clip the look of a wet plate from the 1850s to the 1880s. Three things separate the plate from a plain black and white conversion, and the effect does each on every frame: the blue-biased response of the emulsion, highlights that stop at silver on a dark plate, and the surface of a hand-poured plate.

One plate, many frames

A real plate held one exposure. Here the plate is fixed and the picture moves: the pour edges, the drying marks and the specks stay in the same place for the whole clip, and only the image changes. Motion is the thing that breaks the illusion most, since plates needed seconds of exposure, so slow, steady shots read best.

Blue sensitivity, contrast and tone

Blue sensitivity blends from a standard luminance at 0 to the collodion response at 100, where skies blow out and red goes dark. Contrast sets the gain around the dark pivot of the plate; highlights stop at a cream silver with a gentle sheen. Tone moves the plate from cool blue-grey silver to warm brown.

Pour edges, drying marks and falloff

Pour edges sets how far the bare plate reaches in from the corners, with a milky thinning and a bright rim before the metal. Drying marks adds mottling, streaks and specks. Edge falloff softens the focus and darkens the plate away from the centre, as period lenses did.

Cost

About a quarter of a second per 720p frame on a laptop core. Set the export size before exporting a long clip at 4K.

Frequently Asked Questions

Every frame is converted the way a wet plate recorded it: through an emulsion that saw blue and almost no red, so skies go pale and lips, freckles and warm skin go dark. Highlights stop at a cream silver, the shadows are the dark plate, and the corners thin out to bare metal. The plate's marks and pour edges are fixed, so the clip plays on one plate.

Collodion emulsions were sensitive to blue and ultraviolet light and nearly blind to red, which is why period portraits show dark lips and freckles and washed-out skies. Blue sensitivity sets how far the conversion follows that response.

No. The pour edges, mottling, streaks and specks belong to the plate, not the exposure, so they hold still while the picture moves. Only the image changes from frame to frame.

It is copied into the export unchanged when the container can hold its codec, and re-encoded when it cannot. A note under the export button says which happened.

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