The crop will be the same from K10d to K20d, because the crop factor is related to the sensor dimension not its resolution, and the two cameras have equivalent sensor dimensions.
The K20D shots will "enlarge" more at 100% view, simply because it has a greater pixel density. This doesn't mean anything other than that your monitor resolution (e.g. 1024 x 768)represents a smaller patch of the K20ds sensor compared to the K10d. The >>whole<< picture will have the same field of view for the same lens when the two camera models are compared. You wouldn't print at 100%, the only practical use for this view is when performing some editing functions, and for pixel peeping. Regards, Anthony Farr > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of > John Wittingham > Sent: Friday, 27 June 2008 8:59 PM > To: pdml@pdml.net > Subject: Sensor resolution V focal length.......... > > I'm in need of some longer glass, longer than 300mm. It occured to me the other > day that the crop of a given area of a frame would be consirerably bigger the more > resolution you have from the sensor of the camera viewed at 100%. So I'm thinking > 400mm on the K10D would be approximately 33% bigger at the same crop as it > would be from 300mm viewed at 100% right? > > So if I'm using a K20D how much bigger would a crop of the same subject shot with > the K10D be viewed at 100%, could I substitute pixels for focal length providing the > lens resolution is up to the job? Are there any downsides other than the obvious > differences when using a shorter focal length such as DoF? > > Regards, > > John > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
