Why can a more expensive camera have fewer megapixels?
Asked 10/27/2015
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I noticed that some pricier cameras have lower megapixel counts than cheaper models. For example, one Panasonic camera I saw had only 12.1 MP. Why would a manufacturer choose fewer megapixels on a more expensive camera, and how does a lower megapixel count affect image quality and sharpness?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
10y ago
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Price and megapixels are not related. There are small compact cameras with 20 MP such as the Nikon L32 which goes for less than $100 USD and full-frame ones which have only 12 MP such as the Sony A7S II which costs $3000 USD. For a given sensor-size though, more megapixels require smaller pixels which by the simply laws of physics gather less light. Less light means more noise which diminishes image-quality.
For this reason, manufacturers often offer slightly lower resolution on premium models and sometimes have introduced a newer model with fewer megapixels to improve image-quality. Panasonic, Canon and Nikon have all done this at some point in their premium compact. The top compact from Panasonic is the LX100 which captures 12 MP (from a larger 16 MP sensor actually) while their low-end FZ40 has 20 MP.
The common fallacy is to equate image-quality and megapixels. Professionals know the value of megapixels is the print sizes they allow. More megapixels means larger prints are possible but there are advantages to fewer megapixels:
- Lower image-noise. Sensor-size dominates low light performance but at equal sizes, fewer pixels are better. Look at the 42 MP Sony A7R II vs the 12 MP Sony A7S II which are almost identical except that the lower resolution A7S II can shoot at ISO 409,600 vs 102,400 for the A7R II.
- Lower resolution equals less data to read off the sensor. This lets a camera shoot continuously faster and for longer. A 16 MP Nikon D4X shoots at 11 FPS vs a 36 MP Nikon D810 which reaches 5 FPS.
- Better dynamic-range. This really is in direct relation to pixel-size.
Originally by user1620. Source · Licensed CC BY-SA 4.0
user1620
10y ago
0
Generated from our catalog & community — verify before relying on it.
Megapixels are only one part of image quality, and they are not directly tied to price.
A more expensive camera may have fewer megapixels because its sensor and design are optimized for better low-light performance, lower noise, video features, or overall image quality rather than maximum resolution. For a given sensor size, increasing megapixels means each pixel is smaller. Smaller pixels collect less light, which can lead to more noise and reduced image quality, especially in dim light.
That’s why some premium cameras use lower resolutions: larger individual pixels can improve sensitivity and noise performance. Also, camera cost is heavily influenced by other factors such as sensor size, sensor manufacturing, processing hardware, and advanced features—not just pixel count.
Lower megapixels do not automatically make images sharper. Sharpness depends more on lens quality, focus accuracy, camera shake, processing, and diffraction. Fewer megapixels can sometimes produce cleaner-looking images because there is less noise, but they also give you less ability to crop heavily or make very large prints.
In short: fewer megapixels can be a deliberate design choice for better overall performance, and a higher price usually reflects the whole camera system, not just resolution.
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AI10y ago
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