In photography "grain" refers to images that are not sharp, that appear to be "grainy". This is usually caused by having a too high ISO, but can also be caused by oversharpening in post editing. Photos shot in low light, using a too high ISO to compensate is common. The photos look as if they have tiny grains of sand all over them Here are some examples of what I mean:
f/5.6,1/1000 sec, ISO 100, 55 mm AV mode
You can see the grain particularly in the mountains in the distance, and the sand
Here is my post editing attempt:
f/5.6, 1/800 sec, ISO 100, 55mm, AV mode
f/5.6, 1/1,600 sec, ISO 100, 55 mm AV mode
All images taken at Patricia Bay, Victoria BC on April 11 2023 on Canon 350 D
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