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Re: Questions on macro lense specs
Sort of - the MPE-65 macro lens starts at 1:1 and zooms to 5:1 magnification however it's longest focus distance is 4" in front of the lens and it effectively has the extension tubes built in- the length of the lens more than doubles going from 1:1 to 5:1. You really need to get used to shooting at 1:1 before thinking… -
Re: Questions on macro lense specs
Not certain what you are asking. 1:1 is just the magnification of the lens system- it does not have to be a prime lens. For example if you reverse the typical kit lens supplied with dslrs directly onto the body of the camera, the zoom lens is then quite capable of going from 1:1 to 3:1 magnification depending on the zoom… -
Re: Questions on macro lense specs
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Re: Questions on macro lense specs
With a sigma 105mm lens around 34 mm of ext tubes will give 1.5:1 mag with a focus distance of about 3" in front of the lens and 68mm of tubes will give 2:1 with about 2" focus distance in front of the lens. The classic formula for this with a 1:1 macro lens is mag= 1+ length of tubes mm/focal lengthmm Trouble with this… -
Re: Questions on macro lense specs
follow up question Complete noob question. I noticed the macro lenses are designated by 60mm or 105mm...not 18-105mm for example. Does that mean these lenses can not "zoom" in or out? Is this a "fixed focal length"? Followup question: okay so 1:1 means the size of the image on the sensor is the same as the size of the… -
Re: Questions on macro lense specs
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Re: Questions on macro lense specs
1:1 means that 1 cm of subject will appear as 1cm of image on the sensor. Yes you are correct about the focal length of macro lenses- The longer the focal length, the further away from the subject you are at minimum focus (ie 1:1 mag). The trade off on longer lenses is they are much more expensive, difficult to handhold… -
Questions on macro lense specs
okay what does it mean that a 1:1 reproduction ratio? there is trade off in the max focal length vs the minimum focusing distance correct? the closer you can focus the "less" focal length you need for same "magnification"? Am I thinking about that correctly? so for example the 200mm micro-nikkor min focusing = 0.5m, the…
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