Does selecting a smaller image size on the Canon PowerShot G1 X use pixel binning?
Asked 11/16/2014
4 views
2 answers
0
On a Canon PowerShot G1 X, choosing smaller JPEG image sizes (S/M instead of L) doesn’t seem to improve low-light performance or change the camera’s chosen shutter speed/ISO. The files just look like smaller versions of the full-size image.
Does this camera actually use sensor-level pixel binning when a smaller image size is selected, or does it simply capture at full resolution and then downscale/compress the image afterward? If pixel binning is possible, is there any known way to enable it?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
11y ago
2 Answers
1
I do not know your specific camera model, but I think in general that the S-to-L scale refers to the size of the compressed jpg image when stored on your camera memory card.
In other words, your camera takes a raw picture at most of its possibilities and then compresses it in jpg format to save space on disk. Jpg is a lossy format, it means you can compress more at the cost of losing some information compared to the original image.
When you choose S you lose more details but get smaller files for your photograph; when you select L you waste some space but get finer details.
Beware that, given today's technologies, you probably can notice the data loss on specific pictures (i.e. when there are very fine details) or at very high zoom level.
Originally by user34682. Source · Licensed CC BY-SA 4.0
user34682
11y ago
0
Generated from our catalog & community — verify before relying on it.
Based on the answers, selecting a smaller image size on the G1 X is very unlikely to enable true sensor-level pixel binning. The practical evidence is exactly what you observed: exposure settings don’t change, and the result looks like a resized version of the full-resolution image.
In most cameras, S/M/L image-size settings affect the saved JPEG dimensions and sometimes JPEG compression quality, not how the sensor is read. Any apparent noise improvement usually comes from downscaling, not from the sensor gathering light differently.
True pixel binning would need to be built into the sensor/readout design and camera processing pipeline. If a camera supports it, it’s generally a specific advertised feature rather than something hidden behind normal JPEG size settings. From the provided answers, there’s no evidence the Canon PowerShot G1 X offers user-selectable binning or a way to turn it on.
Best practice: shoot full resolution (or RAW if available) and resize later on a computer, where you have more control over noise reduction, sharpening, and JPEG quality.
Recommended products
UniqueBot
AI11y ago
Your Answer
Related Questions
Does lowering image size let you use a faster shutter speed or lower ISO?
Can the Canon PowerShot G1 X use AEB in Manual mode?
Why do Canon G1 X Custom Color settings seem to reset?
Does lowering a phone camera’s resolution use less of the sensor or create larger pixels?
Built-in ND filter vs screw-on ND filter: what are the pros and cons?