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For example, the industry standard for image viewing apps is certainly Adobe Lightroom, but that app is expensive, packed full of professional features, and heavy on system resources. However, each user is different, so what works best for one might not work at all for another.
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Just like every other variety of software, image viewers come in a range of qualities, and those qualities are generally related to the number of features in the software. ACDSee doesn't have this problem because the software was designed to forgo those additional functions in favor of optimal speed. That may sound strange, but what that basically means is that those apps sacrifice speed for extraneous functions that most users never need. They generally run too slowly, and that is often because those default viewers come with a few too many functions for them to be optimized for utility. Overall Opinion: If you've ever used the default photo viewer app in just about any operating system, you've probably realized one thing about all of them.
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