What is the optimal pinhole size?

There is no definite answer with regards to what will give you the best results when you create your own pinhole camera but with the many experiments throughout the centuries a pinhole size ranging from somewhere between 0.2 – 1.00 mm should be ideal.

If you’re interested in making your own pinhole the formula to finding an ideal pinhole size is found through the equation d = c × √(f × λ) where in d= the optimal diameter for pinhole, c= constant, f= focal length (distance between pinhole and film/sensor) and λ is the wavelength of light the pinhole should be optimized for. For more information you can check this out for a more precise guide.

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