How can I capture a mirror-like reflection on water?
Asked 7/7/2013
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I want to photograph reflections on water that look like a clean mirror, but I usually see ripples and surface texture. Can long exposures smooth the water enough to create a sharp reflection, or do I need genuinely calm water? What conditions and approach work best for this effect?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
13y ago
2 Answers
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Nope. When it's done without cheating (adding the "reflection" in post-processing), it's a short exposure and still water. You'd be amazed how eerily quiet the water surface can be in the very early morning on a small lake in the woods; you can see the wake that waterfowl left behind minutes ago. But it does generally mean getting there at some unblessed hour, woefully undercaffeinated.
Taking a long exposure will blur the image, leaving (usually) a vertically-smeared suggestion of the colour and shapes of the landscape and sky above the waterline. That, too, is a nice effect, but it's not what you're looking for. You can't get a clearer reflection by averaging over time.
Originally by user2719. Source · Licensed CC BY-SA 4.0
user2719
13y ago
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For a true mirror-like reflection, you generally need very still water and a relatively short exposure. Long exposure does not make a sharper reflection—it averages the moving ripples and usually turns the reflection into a vertical blur or soft smear.
The best way to get the effect is to shoot when the water is naturally calm, such as:
- early morning/dawn
- on small lakes, ponds, or sheltered water
- when there is little or no wind
Dawn is especially helpful because water is often calmer than later in the day, and the light can also be more attractive.
So the key is not smoothing rough water with exposure time; it’s finding conditions where the surface is already glassy. If the water has visible waves or current, a long exposure will usually make the reflection less defined, not more.
In short: sharp reflection = calm water + short exposure. Long exposure can be beautiful, but it creates a different look than a mirror reflection.
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