Linked Questions

1
vote
3answers
1k views

Too much “Grain” in photos [duplicate]

i'm trying to produce a few mockup pictures of a person using a tablet around the house. These are the conditions: Camera Nikon D90, Lens 18-55 The pictures were taken in the morning Indoors but the ...
2
votes
2answers
211 views

Which is the factor that creates noise in a photo? [duplicate]

Possible Duplicate: What is noise in a digital photograph? This happens while talking photos on dark or night. The Black color is not black, it has some noise. What would be the reason for noise ...
0
votes
2answers
82 views

What kinds of images can I produce the least noise in when shooting in low light? [duplicate]

What sort of images produce least noise?
4
votes
4answers
2k views

Multiple copies of the same exposure, but randomizing the noise?

As a budding astrophotographer, I find my results are still largely hit or miss. Sometimes the standard procedure of stacking multiple exposures to randomize the noise and boost the signal works ...
9
votes
4answers
16k views

What does IQ mean?

I see a lot of questions which mention IQ. The only meaning I know outside photography is "intelligence quotient" but obviously IQ has some other meaning here. IQ is used for example in "Lens with ...
9
votes
4answers
12k views

Why do my photos show blocky gradients, even in RAW?

I am learning to use my new DSLR, a Sony a57 with 18-55mm kit lens. I was shooting last night at sundown, and after exporting the RAW images to Lightroom, was surprised to see the gradient as showing ...
19
votes
4answers
4k views

How can I get better focus when a subject is moving towards or away from the camera?

When shooting events or action photos, engaging people, I often find that frontal (or rear) perspective may be very expressive, but my problem is focusing when the subject moves towards the camera (or ...
10
votes
3answers
3k views

Is Poisson Noise (“Shot Noise”) a significant source of noise for typical photography?

In this answer, @jrista states that even a camera with a perfect, noiseless sensor would still have noise due to "Poisson noise" aka "Photon Shot Noise" - noise caused by the random variations of ...
7
votes
4answers
7k views

Is there any use for a warm filter on a digital camera?

A friend of mine wants to buy a warm filter for her Canon 450D. I'm wondering if there's any real benefit there, as the color casting can be done in post. Also, for people more familiar with the ...
8
votes
6answers
3k views

Does noise in images depend upon “Megapixels” or “ISO”?

I have a question about image quality. Does noise in an image is depends upon "Megapixels" or on "ISO"?
5
votes
2answers
587 views

Why photos taken with flash appear to have less noise?

I have not verified this on pixel-peeping level. But I have observed that photos taken with flash (built-in one in my case) appear to have very less noise at ISO 800/1600 than the ones taken without ...
0
votes
3answers
548 views

Why are my product photographs not sharp?

I just bought a Canon 750D. The picture has too much noise. The detail/shine of the diamond is not really showing. I am also using a tripod and timer. The lens is the EF-S 18-55mm ƒ/3.5-5.6 IS STM. ...
3
votes
7answers
8k views

Do different lenses affect noise level?

I unfortunately got a very poor and cheap 18-55mm lens on my Canon 60D. In addition to poor quality of my photos (poor in comparison with my 50mm f/1.8 Lens which makes great pictures) the noise level ...
0
votes
2answers
3k views

Why do all my photos look blurry on my Nikon D3300?

When I take photos on my Nikon D3300, unless it's in auto mode, the photos are always incredibly bad quality and too dark, even though the ISO is on the highest. What could be the cause of this and ...
4
votes
3answers
250 views

Where does this noise come from and how to get rid of it

I am using Darktable as my RAW processing software. In darker pictures that have been taken with an ISO of 800 or more, I frequently encounter great issues with luminance noise. The following two ...

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