Mtf imageformula

MTF imagesensor

Included light and dark filters can be used to adjust contrast in differing light conditions. You can even fine-tune the scale of the image by adjusting the viewfinder height.

Invented centuries ago, a camera lucida (Latin for "light chamber") is a drawing aid that was designed to help artists outline an image in proper proportion and perspective.

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MTFlens

MTF imagequality

For the hobbyist, it is an easy way to reproduce images on materials such as wood, cloth, paper or even stencil film. It can be mounted to a work table or easel by its aluminum clamp; its flexible neck lets you maneuver the viewfinder to position the image, so you can work seated or standing.

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When you aim it at what you want to draw and look through the viewfinder, you see a reflected image of your subject overlaid onto your drawing surface, where you can simply trace it.