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  • Welcome to the new site. Here's a thread about the update where you can post your feedback, ask questions or spot those nasty bugs!

ERA-7 in evening sun

Dr Klaus Schmitt

Dr Klaus Schmitt

Well-known member
Honestly, this early russian highest resolution chipmaking lens blew me away...


25841287996_f227324e2a_o.jpg


25772246361_78a1bd5b88_o.jpg


25867333085_6256c0a462_o.jpg


25240769153_78a4031d87_o.jpg


25746406212_89680e6f5d_o.jpg


25841289006_8316515f8a_o.jpg

​

(all shot full open...)

Full set is here: https://www.flickr.com/photos/kds315/albums/72157666006291906
 
Asher Kelman

Asher Kelman

OPF Owner/Editor-in-Chief
Dr Klaus Schmitt said:
Honestly, this early russian highest resolution chipmaking lens blew me away...


25841287996_f227324e2a_o.jpg


25772246361_78a1bd5b88_o.jpg


25867333085_6256c0a462_o.jpg


25240769153_78a4031d87_o.jpg


25746406212_89680e6f5d_o.jpg


25841289006_8316515f8a_o.jpg

​

(all shot full open...)

Full set is here: https://www.flickr.com/photos/kds315/albums/72157666006291906
Click to expand...

Klaus,

The humans in the first picture scratch at the potential of this lens. I hope you will do more people work.

The flowers are so sharp and the colors couldn't be richer.

How long have you had this? I don't remember work from this beauty before? What lens mount?

I presume you are only using it wide open.

Is there color film to take advantage of the resolution possible?

Asher
 
Dr Klaus Schmitt

Dr Klaus Schmitt

Well-known member
Asher, just picked up the the lens a few days ago, as it was waiting for me after my return from California after a long travel from Russia ;-)

It resolves 440lpm (line pairs per mm), approx 11.100 line pairs per inch, no wonder as it was made in the 70s for the battle about making
computer chips. Resolution was measured using russian MIKRAT film, one could use radiographic film, but then it would only b/w.

For your Bronica possibly another one I have woudl be better, as it has longer focal length and most likely a larger covered format...
 
Asher Kelman

Asher Kelman

OPF Owner/Editor-in-Chief
Dr Klaus Schmitt said:
Asher, just picked up the the lens a few days ago, as it was waiting for me after my return from California after a long travel from Russia ;-)

It resolves 440lpm (line pairs per mm), approx 11.100 line pairs per inch, no wonder as it was made in the 70s for the battle about making
computer chips. Resolution was measured using russian MIKRAT film, one could use radiographic film, but then it would only b/w.

For your Bronica possibly another one I have woudl be better, as it has longer focal length and most likely a larger covered format...
Click to expand...

If one did have such a combination, what do you think might be the equivalent "useful resolution" from such a camera shopping modern available color film.

Asher
 
Dr Klaus Schmitt

Dr Klaus Schmitt

Well-known member
it is always the weakest part in the chain which determines that. So lens x sensor / film is it. in this case I'd say it is the film ;-)
 
Asher Kelman

Asher Kelman

OPF Owner/Editor-in-Chief
Dr Klaus Schmitt said:
it is always the weakest part in the chain which determines that. So lens x sensor / film is it. in this case I'd say it is the film ;-)
Click to expand...

Well, Klaus, it comes to the difference between analog subtlety in low contrast fine detail and well defined pixels in digital. Perhaps with lens wide open and use of scanned images with great software, one can get better transitions.

If the sheet of film is larger than the digital sensor one can afford, then film might be an advantage.

Asher
 
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