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<blockquote data-quote="Dave_W" data-source="post: 152305" data-attributes="member: 9521">To a degree, lenses can alter the IQ of your images. That was an important consideration back in the days of film cameras but what exactly does that mean in the day of digital cameras and digital darkrooms? To begin with, a less expensive lenses will have more vignetting, some pincushioning/barrelling, CA and corner softness. 1- Vignetting. It can be completely removed in PP, however most people not only keep the vignetting but they increase that vignetting for the effect. 2- Pincushioning/barrelling. Can can be completely removed in PP.3- CA. I'm sounding like a broken record but it, too, can be removed via PP.4- Soft corners. Now we've hit the one issue that cannot be address via PP. But as long as you're using a DX camera, soft corners really don't apply to you because the DX sensor is sampling the image right in the so-called &quot;sweet spot&quot;, or middle of the image and do not suffer from the corner softness that an FX camera would.So yes, some less expensive lenses have IQ issues, however, using a DX camera and possessing a thorough understanding of PP, all these issues are rendered moot. All this said, I would recommend you purchase the best lens you can afford and to not worry about any IQ issues because they're really not an issue we photographers need to worry about any longer.</blockquote>

[QUOTE="Dave_W, post: 152305, member: 9521"] To a degree, lenses can alter the IQ of your images. That was an important consideration back in the days of film cameras but what exactly does that mean in the day of digital cameras and digital darkrooms? To begin with, a less expensive lenses will have more vignetting, some pincushioning/barrelling, CA and corner softness. 1- Vignetting. It can be completely removed in PP, however most people not only keep the vignetting but they increase that vignetting for the effect. 2- Pincushioning/barrelling. Can can be completely removed in PP. 3- CA. I'm sounding like a broken record but it, too, can be removed via PP. 4- Soft corners. Now we've hit the one issue that cannot be address via PP. But as long as you're using a DX camera, soft corners really don't apply to you because the DX sensor is sampling the image right in the so-called "sweet spot", or middle of the image and do not suffer from the corner softness that an FX camera would. So yes, some less expensive lenses have IQ issues, however, using a DX camera and possessing a thorough understanding of PP, all these issues are rendered moot. All this said, I would recommend you purchase the best lens you can afford and to not worry about any IQ issues because they're really not an issue we photographers need to worry about any longer. [/QUOTE]

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