Entry-level DSLR vs Canon PowerShot: what are the practical differences?
Asked 10/31/2011
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Some Canon PowerShot cameras offer aperture priority, shutter priority, and full manual control, which makes them seem similar to an entry-level DSLR. For an amateur photographer, what are the main practical differences between an entry-level DSLR and a PowerShot, and when would a DSLR actually be necessary over a point-and-shoot?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
14y ago
2 Answers
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The 1st difference, and arguably the most important one, is the image sensor's size. DSLR has an APS-C or Full-Frame (35mm) sizes CMOS sensors, where Powershots have much smaller, some CCD some CMOS sensors. this translates to superior image quality in terms of digital image noise - the larger the sensor, the less noise is apparent in the image. In this picture from Wikipedia, the 1/1.6" and smaller rectangles are the realm of P&S:
Also important is the fact that DSLR have interchangeable lenses, as well as TTL (Through The Lens) Optical Viewfinders which lets you see what the sensor sees.
DSLR are generally quicker than P&S, and occasionally have more features (but not necessarily, as the Powershot line has compatible CHDK alternative firmwares which enable many of the DSLR features).
Is it "enough"? This is a very subjective question. Given the price tag, the different size and weight group and more factors, only you can evaluate the "enough-ness" of a P&S camera to your needs.
Originally by user1024. Source · Licensed CC BY-SA 4.0
user1024
14y ago
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Generated from our catalog & community — verify before relying on it.
The shooting modes may look similar, but the biggest differences are hardware and system flexibility.
An entry-level DSLR typically has a much larger sensor than a PowerShot. Larger sensors generally give better image quality, especially lower noise and better performance in low light.
A DSLR also uses interchangeable lenses, while a PowerShot usually has a fixed built-in lens. That gives the DSLR much more room to grow for wide-angle, telephoto, macro, or other specialized shooting.
Another difference is viewing and handling. DSLRs typically use a through-the-lens optical viewfinder, while PowerShots usually rely on the rear screen or an electronic viewfinder/live view.
DSLRs are also generally faster and may offer better support for accessories and additional gear.
So, no—a DSLR is not automatically necessary for an amateur. A PowerShot can be enough if you want a compact camera with manual controls and don’t need interchangeable lenses or the best possible image quality. A DSLR becomes more worthwhile when you want better low-light performance, faster operation, lens choice, and more room to expand your system.
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