Why do my Canon 200D photos look noisy with the EF 24mm f/2 lens?
Asked 5/17/2019
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I’m new to photography and recently bought a Canon EF 24mm f/2 lens for my Canon 200D. My first test shots in a dim room looked noisy, but I’m also seeing similar noise in daylight shots and close-ups. I’m wondering whether this could be caused by the lens, camera settings, or something else.
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
7y ago
2 Answers
3
Turning my comment into an answer. For comparison's sake, here's some Canon 20D test shots at ISO3200 from back in 2008 (https://kenrockwell.com/tech/dslr-comparison/us.htm#3200).
I bring this up to make the point that noise is relative to your goal and expectations. Back then, I had no issues printing up to 5x7 using ISO3200 and that was FAR from the capabilities of your camera. (Most of these shots ended up being converted to black and white just because the noise was so bad! >_<)
From where I sit, this image is damn near noiseless (I realize there's noise, compare it to the old for me). I would have no issues printing this thing at 16x20 and feel good about it. If it's meant for a smaller size, then you can clean up the noise, shrink, and sharpen at it'll look "cleaner" simply because of the downsize.
To sum up - it's a nice shot and your gear performed admirably.
That being said - you can reduce the noise by lowering the ISO. But, keep in mind that not all ISO values are created equal, due to how the camera processes them. If you want to simply play it safe, stick to full stop values (100, 200, 400...)
Your lens, btw, has nothing to do with noise. That's all sensor and ISO selection. As you progress in your photography, I'd advise moving to full manual (ISO, Aperture, Shutter speed) until you're comfortable. Then, learn how the camera's auto modes work to choose settings and what the camera does for trade-offs. Then you can start using auto modes and not end up being surprised that your camera chose ISO3200 for a nice bright day (where every other shooter probably would have chose 400 or less).
Originally by user67377. Source · Licensed CC BY-SA 4.0
user67377
7y ago
0
Generated from our catalog & community — verify before relying on it.
The lens is very unlikely to be the cause of image noise. Noise mainly comes from the camera sensor, exposure, ISO setting, and how closely you inspect the image.
Based on the examples discussed, the amount of noise you’re seeing sounds fairly normal—especially if you’re viewing the image at full size. At normal print or screen sizes, it may be much less noticeable than it seems when zoomed in.
A few key points:
- Noise is not usually caused by the lens itself.
- If you take the same photo with another lens at the same exposure settings, the noise level should be about the same.
- A faster lens like an f/2 can actually help reduce noise, because it can let in more light and allow a lower ISO.
- If the noise still bothers you, use noise reduction in editing software.
So the issue is most likely expectations, viewing magnification, or camera settings rather than a fault with the 24mm lens.
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