- #1
vitency
I posted the following on a phone forum and got no replies, as expected. It's a bit out-of-the-way and technical. Thought this might be a better place since the question still interests me.
I'm using my phone to take photos of assembly procedures on my electronics workbench. However, the focus in up-close shots is not sharp.
I've always been curious about the focusing method they use. It's obviously not electromechanical servo as in digital cameras, and my guess is that the image sensors are sufficiently sensitive as to allow the use if a simple "pin-hole" lens, which effectively gives "infinite" depth-of-field. If so, I'd guess that resolution is directly related to aperture diameter. Two questions thus arise:
1. Is my guess about focusing correct, and if not what is the method?
2. Is it possible to use an external lens to sharpen the focus, and if so of what characteristics?
Many thanks for any replies and/or answers.
I'm using my phone to take photos of assembly procedures on my electronics workbench. However, the focus in up-close shots is not sharp.
I've always been curious about the focusing method they use. It's obviously not electromechanical servo as in digital cameras, and my guess is that the image sensors are sufficiently sensitive as to allow the use if a simple "pin-hole" lens, which effectively gives "infinite" depth-of-field. If so, I'd guess that resolution is directly related to aperture diameter. Two questions thus arise:
1. Is my guess about focusing correct, and if not what is the method?
2. Is it possible to use an external lens to sharpen the focus, and if so of what characteristics?
Many thanks for any replies and/or answers.