Do I need full frame for low-light photography, or is APS-C enough on a tripod?
Asked 11/26/2013
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I mostly shoot in low light and recently moved from a point-and-shoot to a Sony NEX-5R with an APS-C sensor. Even using f/2.8 or f/1.8 lenses, I often end up at ISO 400 or lower on a tripod for clean results.
That makes me wonder whether upgrading to full frame would really help. I’ve heard the difference is often around one stop (sometimes up to two, depending on sensor generation). If that’s true, then a 13-second exposure on APS-C might become roughly 6.5 seconds on full frame for similar image quality—still tripod territory.
So for tripod-based night and low-light photography, is full frame only an incremental improvement, with the bigger benefit showing mainly for handheld or extremely low-light shooting?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
12y ago
2 Answers
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Essentially, your argument is correct as long as you understand that negligible and high-price are relative terms.
You are correct that you get one or at most two stops advantage between a full-frame and an APS-C sensor of the same generation. More importantly so, the advantage is lower at low ISO sensitivities with modern cameras which are essentially noise-free until ISO 400 at least.
Shooting from a tripod and keeping ISO low is key to having nice clean results in low- light which is why I am satisfied with using an APS-C sensor camera for night photography. Shooting hand-held or in extremely low-light imagery is another story where full-frame shows a more significant advantage but for general night photography, the price of full-frame, including matching lenses is of high cost compared to the benefit.
Originally by user1620. Source · Licensed CC BY-SA 4.0
user1620
12y ago
0
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You do not need full frame for low-light photography. For tripod-based night work, your reasoning is basically correct: full frame usually gives about a 1-stop, sometimes up to 2-stop, advantage over APS-C of a similar generation, and the benefit is often smaller at low ISO where modern cameras are already quite clean.
That means if you’re already using a tripod and keeping ISO low, full frame is often an incremental improvement rather than a game-changer. A shorter exposure helps, but if you still need a tripod either way, APS-C can remain a very practical choice.
Where full frame helps more is when you can’t simply add exposure time—especially handheld shooting, very dim scenes, or situations where you need higher ISO and cleaner files. Also remember that moving to full frame usually means higher costs not just for the camera body, but also for lenses.
So: for tripod-based low-light photography, APS-C is often enough. Full frame usually makes low-light shooting easier, but it’s not essential unless you need the extra performance badly enough to justify the cost.
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