3 KEYS TO IMAGE QUALITY
It’s not all about megapixels. There are three essential keys to producing good image quality in a digital camera the lens, the image sensor and the image processor.
Having a good quality lens is like having properly tted spectacles do it right and everything looks sharp, do it badly and everything looks o . A good lens does more than just get subjects looking sharp across the entire image it also transmits accurate color and reduces artifacts such as are and distortion.
2 IMAGE SENSOR
As outlined in the main story, it’s not just about size or the megapixels, even though each plays a part it’s also about the technology behind the sensor. For example, most image sensors today use a ayer color lter with alternating rows of red green and green blue lters to create a color image.
However, FUJIFILM has a unique X-Trans sensor, which uses a more random arrangement of RGB pixels than usual. Because of that, the sensor eschews the need for the optical low-pass lter found in most digital cameras, and can capture ner detail as a result. Other technologies, like backside-illuminated (BSI) sensors have improved low-light performance, while emerging ones like FUJIFILM and Panasonic’s organic sensor promise to push performance further.
3 IMAGE PROCESSING
Image processing can also help to enhance or degrade the nal picture you get. A raw, unprocessed image from the sensor can look rather at, most consumer cameras will add contrast and color saturation to taste, while reducing the appearance of image noise, and present the nal result to the user.
If the processor does it with nesse, then you get a good-looking picture, but if the processor is tuned too aggressively, then you end up with overly-processed pictures that might look too garish or have details smoothed over.