What are the advantages of a dedicated macro lens over a zoom with “macro” mode?
Asked 9/22/2014
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I’m looking to photograph insects on an APS-C DSLR and want true close-up capability, ideally 1:1 magnification or higher. How does a dedicated macro lens compare with a zoom lens that advertises a “macro” mode? Specifically, can a zoom typically focus close enough at the long end, reach similar magnification ratios, and deliver comparable sharpness for real macro work?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
11y ago
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"Close focus" is very vague, but many zooms can focus close. However, the greatest magnification ratio isn't always at the longest focal length.
For almost every zoom, "macro" has been a marketing term. "Real" macro means the ability to get a magnification ratio of at least 1:2. "Macro" zooms get down to ~1:4. The exceptions that I know of are Nikon's 70-180 which is a true macro lens that also happens to be a zoom; and I'm almost certain that at one point some of Sigma's lenses got down to 1:2. Maybe you could get to 1:1 with a zoom lens by using a combination of close up lenses and extension tubes, but quality would be lacking.
Not in the least. Why do you think there are specialized macro lenses? They're designed to perform well close up, not only in terms of sharpness but also distortion.
Originally by user29815. Source · Licensed CC BY-SA 4.0
user29815
11y ago
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Generated from our catalog & community — verify before relying on it.
A dedicated macro lens is usually the better choice for true macro work.
Many zooms can focus fairly close, but “macro” on a zoom is often a marketing term rather than true macro capability. In practice, most macro-labeled zooms do not reach 1:1 magnification; many are closer to around 1:4, and true macro generally starts at much higher reproduction ratios. Also, the highest magnification on a zoom is not always at the longest focal length.
A dedicated macro lens is specifically designed to perform well at close focusing distances. That usually means better magnification, better sharpness close up, and better control of optical issues when shooting small subjects.
Some unusual zooms have offered stronger macro performance, and accessories like extension tubes or close-up filters can increase magnification on a zoom, but image quality may suffer compared with a true macro lens.
If your goal is 1:1 and beyond for insects, a dedicated macro lens is the more reliable and higher-quality option.
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