sojournerphoto
Veteran
In this thread, I commented that I thought that 6 by 7 negatives benefited from a scan resolution of the order of 100Mp, albeit that the actual image data doesn't require that level of resolution for print. The oversampling helps ensure that maximum information is retrieved.
Since then I read a scanned film compared to digital capture analysis by Tim Parkin (local to me) who runs a drum scanning service and works with Joe Cornish amongst other photographers. The website is 'On Landscape'. He concluded that the Mamiya 7ii, with Velvia was around 51Mp in digital terms, and potentially much more with high resolution black and white (Adox CMS20 tested).
Putting the two thoughts together, and with a 24Mp APS-C body on the way, I started thinking about how this could work. I'm already happy with stitching images, but prefer photos to be single exposures really. However, to digitise existing and new negatives, I am thinking of using a macro lens and copy stand (as many have before) and stitching. With the pixel density inherent in a 24Mp APS-C sensor this allows materially higher resolution than my Nikon 9000 and may even prove to be faster.
Example resolutions using the lens at 1:1:
35mm - 54Mp
Mamiya pano - c100Mp
Mamiya full frame - c250Mp
If the images are clean that starts to sound like a plan. Certainly I think black and white should be fine. Negatives can create some 'interesting' challenges around inversion and colour management.
The panel's thoughts would be appreciated
Mike
Since then I read a scanned film compared to digital capture analysis by Tim Parkin (local to me) who runs a drum scanning service and works with Joe Cornish amongst other photographers. The website is 'On Landscape'. He concluded that the Mamiya 7ii, with Velvia was around 51Mp in digital terms, and potentially much more with high resolution black and white (Adox CMS20 tested).
Putting the two thoughts together, and with a 24Mp APS-C body on the way, I started thinking about how this could work. I'm already happy with stitching images, but prefer photos to be single exposures really. However, to digitise existing and new negatives, I am thinking of using a macro lens and copy stand (as many have before) and stitching. With the pixel density inherent in a 24Mp APS-C sensor this allows materially higher resolution than my Nikon 9000 and may even prove to be faster.
Example resolutions using the lens at 1:1:
35mm - 54Mp
Mamiya pano - c100Mp
Mamiya full frame - c250Mp
If the images are clean that starts to sound like a plan. Certainly I think black and white should be fine. Negatives can create some 'interesting' challenges around inversion and colour management.
The panel's thoughts would be appreciated
Mike
edge100
Well-known
This has been solved, by me and by others. Negatives, B&W or colour, are trivial.
http://lamlux.net/2016/02/23/digitizing-negatives-with-a-digital-camera/
51MP is a gross underestimate for a 6x7 neg.
http://lamlux.net/2016/02/23/digitizing-negatives-with-a-digital-camera/
51MP is a gross underestimate for a 6x7 neg.
sojournerphoto
Veteran
Cheers, I'll have a read.
Agree, they talked about 250Mp plus for Adox Cms
Mike
Agree, they talked about 250Mp plus for Adox Cms
Mike
calebarchie
Established
Former street photographer.........? Canadians sure are a funny bunch.