Four test strips

Here you can see four test strips with different exposures. The second from the bottom has the most exposure, giving it a saturated blue color due to the thicker emulsion. The top plate is underexposed and consequently has a very thin layer of emulsion.

Here you can see four test strips with different exposures. The second from the bottom has the most exposure, giving it a saturated blue color due to the thicker emulsion. The top plate is underexposed and consequently has a very thin layer of emulsion.

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