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<blockquote data-quote="nickt" data-source="post: 326587" data-attributes="member: 4923">A true macro is generally considered to have a reproduction ratio of 1:1 as Wayne said. I don't know if close focus officially falls into the definition, but in every macro lens I know, close focusing would be necessary and assumed to get that 1:1. They do tell you this info. You will see 1 or 2 different numbers for macro lenses. They may give minimum focus distance. This is the distance from subject to sensor plane. You need to subtract the length of the lens to see how close you can get. Or they might give working distance. This is the distance from the front of the lens. I think that is a more useful spec. 1 foot would be great. I think my Tamron 60mm is about 7&quot;. Some are less. You will scare bugs and stuff if you get too close. Most people want as much distance as possible to not scare things and also for better lighting. I don't know why your attachments are unusable without the macro thing, I am not familiar. But if it is a regular 'macro filter', it would screw on your regular lens. Then almost everything will be blurry. You will only be able to focus on very close things. So try that. Very close and focus will be 'thin'. Very easy to miss the focus. Auto focus likely wont work.</blockquote>

[QUOTE="nickt, post: 326587, member: 4923"] A true macro is generally considered to have a reproduction ratio of 1:1 as Wayne said. I don't know if close focus officially falls into the definition, but in every macro lens I know, close focusing would be necessary and assumed to get that 1:1. They do tell you this info. You will see 1 or 2 different numbers for macro lenses. They may give minimum focus distance. This is the distance from subject to sensor plane. You need to subtract the length of the lens to see how close you can get. Or they might give working distance. This is the distance from the front of the lens. I think that is a more useful spec. 1 foot would be great. I think my Tamron 60mm is about 7". Some are less. You will scare bugs and stuff if you get too close. Most people want as much distance as possible to not scare things and also for better lighting. I don't know why your attachments are unusable without the macro thing, I am not familiar. But if it is a regular 'macro filter', it would screw on your regular lens. Then almost everything will be blurry. You will only be able to focus on very close things. So try that. Very close and focus will be 'thin'. Very easy to miss the focus. Auto focus likely wont work. [/QUOTE]

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