Benefits of Smaller Sensor Digital Cameras: Exploring Efficiency and Versatility

The pixel size and overall dimensions of the sensor in a digital camera are crucial factors that impact its performance and capabilities. While larger sensors, such as those found in 35mm full-frame cameras, have their advantages, smaller sensor-based cameras have their unique strengths as well. In this article, we will explore some of the compelling reasons why digital cameras often employ smaller sensors.

Pre-cropping and Field-of-view Control

One of the significant advantages of using smaller sensors is the ability to pre-crop images to achieve the desired field-of-view. For example, a small sensor allows you to design your composition and ensure that a bird or any other subject fills the frame completely, rather than requiring you to crop an image taken on a camera with a larger sensor.

While it might seem counterintuitive, smaller sensors can also offer more depth of field at a given focal length compared to larger sensors. This is often derided by 35mm enthusiasts who might not appreciate the comparative benefits. However, it is worth noting that renowned photographers often change their composition and move closer to their subjects to achieve the desired depth of field, just as they would with a larger sensor.

Better Performance in Low Light

A common misconception is that larger sensors offer superior performance in low light conditions. However, studies and practical evidence suggest that smaller sensors can perform admirably in dimmer environments. This is attributed to the fact that smaller sensors have less mass, allowing for more vigorous shaking, which is the basis for in-body image stabilization (IBIS). The latest Micro Four Thirds sensors, for instance, boast the very best IBIS capabilities, making them an excellent choice for low-light photography.

Tricks and Techniques

Smaller sensors can perform a variety of tricks and techniques that larger sensors find challenging. For example, the Olympus OM Systems has offered multifocus high-resolution modes for over seven years, a feature that even modern 35mm cameras are only just beginning to incorporate. The latest Canon multi-shot high-resolution offerings have been criticized as mere specmanship, highlighting the superiority of Micro Four Thirds technology in this area.

Another advantage lies in the faster readout times of smaller sensors. Back-Side Illuminated Stacked Sensors, as seen in the OMDS OM-1, significantly reduce rolling shutter issues, making multi-frame techniques like high-resolution HDR focus stacking and various bracketing modes faster and more efficient.

Cost and Portability

The cost and portability of smaller sensor cameras are significant advantages. The top-of-the-line Micro Four Thirds OM-1, for instance, is significantly less expensive than its 35mm counterparts. Moreover, a smaller sensor implies a smaller and lighter camera and lenses, which offer a notable size and weight advantage. Even though 35mm cameras are catching up in terms of size due to mirrorless technology, the lens advantage of smaller sensors still holds true.

The Olympus OM-D E-M1 Mark II, my first mirrorless camera, brought a significant delight the moment I used it. It was the first digital camera to make me giggle with joy since my film-era Olympus OM-4. The OM Systems OM-1, with its remarkable speed, further adds to the joy of using these smaller sensor cameras.

In conclusion, smaller sensors in digital cameras offer numerous benefits such as pre-cropping, better low-light performance, innovative techniques, and cost-effectiveness. These advantages make smaller sensor cameras a preferred choice for many photographers, proving that there is much to be gained from smaller is smarter in the world of digital imaging.