75 megapixel scan of a 6x9 negative

[cerber0s]

Shot with the Fujica Professional 6X9 on Kodak TMax 400, developed in Adox XT-3 (XTOL).

I'm by no means saying this is as good as it can get, I missed focus on the eyes, and my scanning setup is by now means perfect. Still, this would make a pretty sizeable inkjet print. Click image for full resolution.

 

[MattKing]

Moved to the Hybrid neighbourhood. Thanks for sharing this.

 

[cerber0s]

Moved to the Hybrid neighbourhood. Thanks for sharing this.

Thanks for moving it

 

[ags2mikon]

Please explain your hybrid process. It looks good to me.

 

[cerber0s]

Please explain your hybrid process. It looks good to me.

I use a decent light table and for 135-film I have a good negative holder, but for 120-film I only have a flimsy holder scavanged from an old scanner. Some negatives are ever so slightly curved, despite my best efforts.

I use an Olympus OM-D EM1 mkii, it’s only redeeming feature that it can capture high resolution (80 megapixel) images when on a tripod. The camera is set on a regular tripod, and although I dim the lights in the room, I have nothing to block ambient light hitting the negatives from above.

The lens I use is an old Canon FD 50mm 1.4 with an extension tube and a lens adapter for the Olympus. That lens is the sharpest one I own, very sharp even by todays standards.

Things I could do to improve the setup in order of significance: Get a better holder for 120 negs, block ambient light, get a good macro lens, get a reprostand for the camera (mostly for convenience).

 

[ags2mikon]

How do you get 80 mp out of that? Is it a pixel shift function?

 

[cerber0s]

Is it a pixel shift function?

Bingo! It works great actually.

 

[ags2mikon]

Thank you. It is a nice transfer. I have been using a Beseler dual mode slide duplicator and a Sigma Quatro H with an Olympus 80mm f 4.0 bellows lens. Much better than my Epson flat bed.

 

[cerber0s]

I digitized this in reply to a post on a national photo forum, a cesspit of opinions and bad emotions (I'm glad I have this place). Someone claimed that 135 film couldn't reach a "resolution" corresponding to more than 3 megapixels. So I digitized this part of a 135 frame at 80 megapixels.

It's not perfect and it's hard for me to tell if it's because of the original exposure, the film, the digitization (getting this close was pretty dicey), or a combination.

Here it is:

 

[koraks]

It's not perfect

Maybe not, but overall contrast is fine and there's loads of detail in there!

 

[Film-Niko]

I digitized this in reply to a post on a national photo forum, a cesspit of opinions and bad emotions (I'm glad I have this place). Someone claimed that 135 film couldn't reach a "resolution" corresponding to more than 3 megapixels. So I digitized this part of a 135 frame at 80 megapixels.

A lot of misinformation is spread on the internet concerning resolution of film. And that 3 Megapixel statement is of course complete nonsense.
You should send that guy in your local forum this link:

36 Megapixels vs 6x7 Velvia | Film vs Digital | On Landscape

Over a year ago now we carried out various tests of medium format digital camera systems and film camera systems.

www.onlandscape.co.uk

And have a look here at the results of our photrio member Henning, who is running an optical test lab, and doing scientific resolution tests for decades (film and digital):

Rollei RPX 25: Grain and Resolution

Hi All, I am curious about the grain and resolution characteristics of Rollei RPX 25. Anyone have any experience or knowledge about this film as it pertains to it's grain and resolving power? How would it compare to TMax 100 or Across 100?

www.photrio.com

Meanwhile he has tested much more, so maybe you contact him here to get even more information.

I've done lots of these tests, too. Film and digital. And I can totally confirm the results of Tim Parkin and Henning.
Zeiss has done such tests, too. And published them some years ago in their online publication Camera Lens News.
They have got even higher resolution for film, but they have also used a bit higher object contrast for the used tests charts. The higher the object contrast, the higher the resolution.

During the film boom era in the 90ies lots of photographers tested their lenses and films. With high quality low or medium speed film.
General rule for the system resolution of film+lens:
A very good lens has to resolve more than 100 lp/mm with a very good film like Velvia, Provia, TMX, D100. That is the system resolution of lens+film.
With all my best lenses I got resolution values in the range of 105-150 lp/mm with these films. With microfilms like CMS 20 II reaching the diffraction limit of white light was also possible (240-250 lp/mm at f5.6).

With the 45MP D850 the best resolution value I have got under the same test conditions was 100 lp/mm.