Thanks for the answer. I agree with what you are saying but I think my question is as follows. Assuming I needed 1:1 to fill the frame on film with a specific subject I would obviously need to back off a bit and a lower magnification to fill the frame on digital with the same subject. I would now be working at less than life size would I not? Is this difference also a factor of 1.5 like on telephoto?
Patrick -----Original Message----- From: [email protected] [mailto:[email protected]]on Behalf Of William Robb Sent: 21 April 2009 07:50 AM To: Pentax-Discuss Mail List Subject: Re: Macro ----- Original Message ----- From: "Patrick Nelson" Subject: Macro > Hi > > I have a question arround the magnification factors on macro lenses. If > you > use a 1:1 lense on film the image is life size on the negative. What does > this translate to on an aps-c size sensor 1.5:1 ?. I use the a100 f4 macro > which is 1:2 would this then translate to 0.75:1 or 3 quarters life size. > I > know that as I am not doing any measurements on the resulting image and > use > the lense as the size and framing I want it is imaterial. I wouls however > like to know. Life size is life size. 35mm film sees more real estate than APS-C. William Robb -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.287 / Virus Database: 270.11.55/2057 - Release Date: 04/20/09 10:36:00 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
