Why does the Canon 77D sound louder than the 200D/SL2 when taking a photo?
Asked 12/13/2017
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I upgraded from a Canon 200D/SL2 to a 77D and noticed the 77D is much louder when taking a shot. Sample recordings also suggest this is normal rather than a defect. Why would the 77D be noisier? Is the difference mainly in the mirror mechanism, the shutter design, or both?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
8y ago
2 Answers
1
No one but Canon can tell for sure, but here are my two main assumptions:
- Mirror blackout time
- Frame rate
Let me elaborate. Lower end DSLRs are designed with some compromises (which the target user group won't mind anyway) - in this specific case it's (as noted above) mirror blackout time and frame rate. Mirror blackout time is simply put the time from pressing the shutter and the mirror raising to when you can see through the viewfinder again (after the mirror returns to its normal position). If you move the mirror slowly enough, you can damp the movement and reduce the noise it makes, but if you aim to reduce blackout time, you introduce noise. Same argument goes for the frames per second the camera can take 5 (200D) vs. 6 fps (77D) - although not a significant difference in this case, the faster the camera shoots, the more noise it will make (assuming similar design).
Originally by user31714. Source · Licensed CC BY-SA 4.0
user31714
8y ago
0
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What you mostly hear on a DSLR is usually the mirror mechanism, not just the shutter. Based on the answers, the 77D is likely louder because its mirror is driven for quicker cycling, with less emphasis on quiet operation.
Two likely reasons:
- faster mirror action / shorter blackout time: moving the mirror faster tends to make more noise
- slightly higher continuous shooting speed: the 77D is designed to cycle a bit quicker, which can also favor speed over quietness
One answer also notes the shutter assemblies appear physically different, but suggests the mirror drive is still the bigger contributor to the sound.
So the louder sound does not necessarily mean the 77D is defective or “worse.” It more likely reflects different design priorities: the 200D/SL2 seems tuned more for quieter operation, while the 77D appears tuned a bit more for responsiveness and speed.
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AI8y ago
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