Macro is in the 1:2 to 1:1 range. Your Tamron does 1:2 (half life-size) without the dedicated extension tube.
Microphotography is greater than 1:1 magnification. But that generally requires bellows or a reverse mounted lens on a macro lens rather than just a macro lens. -Adam Jens Bladt wrote: > I have photographed my Stanley measuring device with a > Pentax K10D and a Tamron SP 2.5/90mm lens - at closest possible focusing > distance; 0.39 m. Is this macro? > http://www.flickr.com/photos/bladt/477746425/ > > Maybe not. My sensor is 23.5mm. This image covers appr. 47mm. This means > it's almost accurately half natural size - 50% on the sensor. > Isn't macro photography supposed to be enlarging the subject? > On a computer screen my 3872 pixel would look like 1366 mm. That's an > enlarement of appr. 2900% (almost 30 times). > But enlarging the copies (negs) is not really macro, is it? > > Jens Bladt > > http://www.jensbladt.dk > > > > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.5.467 / Virus Database: 269.6.2/779 - Release Date: 04/28/2007 > 15:32 > > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
