wont higher ISO ratings distort. produce grains in photos...???

Question

wont higher ISO ratings distort. produce grains in photos...

how come high end cameras with lots of ISO ratings still produce good quality snaps...

Answer 1

With higher ISO film or sensor sensitivity, grain or noise is certainly more prominent. In terms of why high end cameras seem to produce better looking images when shooting at higher ISO ratings, it is primarily a matter of the resolving power of better refined more expensive lenses. Also if you are judging these images shot with high ISO settings are based on small 4x6 prints then you really arent seeing the big picture, literally. When you print large the grain or noise will proportionally increase with each magnification of the image.
That said, you can print fairly large using high ISO film and maintain a significant level of tonality and sharpness granted you have a sharp lens and excellent printing skills. Just consider the photographer Sebastião Salgado. He regularly prints 20x30 and sometimes on occasion even larger. Why is this amazing, well to begin he often uses Tmax 3200(3200 ISO) or Tri-x. The reasons for his success printing this large are sort of two fold, to begin he uses a fairly good camera with a sharp lens, a Leica rangefinder, furthermore he supposedly has his own personal printer in New York who does all his developing and printing.

Answer 2

Since you are attributing the ISO rating to the camera. I assume you're talking digital. Increasing the ISO rating in a digital camera means increasing the gain on the sensor. So not only does each photon count for more, but each bit of electrical noise does as well. The end result is that your pictures have more noise in them, random pixels whose value has changed from what it should be.

High end cameras can reduce this noise in a number of ways. They use higher quality sensor chips and circuitry to reduce the amount of electrical noise. They probably also have more sophisticated noise reduction in their software. If you're comparing cameras of significantly different pixel count, the higher resolution camera's images will show less noise when reduced because the noise gets averaged out to some degree when you combine pixels.

Answer 3

the better the iso # in movie the bigger the silver crystals are to assemble the decrease mild factor. so in short that's going to seem grainier because the grains are larger, fantastically if underexposed. possibly a protracted publicity with a "slower" movie (decrease iso) see you later as what your taking a image of would not bypass .