Misconceptions and myths remain a problem because they’re both compelling and nobody bothers to rectify them. For photography enthusiasts, many misconceptions of digital cameras came about while trying to sketch defective analogies to film digital photography.
Because of the complicated science behind the digital photo, it’s not really shocking that a few fallacies persist, but listed here are a few you would like to know about.
#1: ISO Adjustments Sensitivity
For the film, digital camera sensors contain a single sensitivity. Adjusting your ISO on a camera doesn’t make the sensing unit more acutely sensitive (i.e. taking more photos). On the other hand, the digital camera intensifies a poor signal (gain) with noise. It’s a lot like showing up the volume level on a substandard quality sound recording. You can easily listen to it, however, it still sounds bad.
The main point here: Higher ISO brings a noisier photo because of physics. New technological advances such as ISO invariance provides photography enthusiasts more choices to sustain vibrant range.
#2: High Bit-Depth Means Higher Quality Photos
Bit-depth is related to the image resolution of the analog-to-digital converter in the digital camera. The higher the bit-depth, the more the data from a pixel could be cut into more and more smaller units resulting in better tonal transitions.
If any latest digital camera has 14-bit A/D converters which can easily deal with 15,384 levels, then why not develop 16-bit or even 24-bit converters for better gradations?
Apart from the large files that could derive from more data, you will find there’s a point of decreasing returns with such a good volume of quantization due to noise.
The main point here: Setting more bit-depth is like requiring more megapixels. If picture quality is your main goal, then there tend to be more things at play as compared to a single changing.
#3: There’s the Best Coverage For any Photo
Absolutely no, but there’s an ideal signal-to-noise rate (SNR).
Have you been looking to open a back-lit face or put it into shape?
The best contact with a human is fuzzy, but with electronics point of view, you should get the finest SNR. It may sound nerdy, but a powerful SNR provides you with the most latitude in order to post-process your image. This is also true for professional photographers who prefer ETTR (expose to the right).
The main point here: If low depth-of-field is your main goal, pick a larger sensing unit with fine glass.