Search found 11 matches

by Olaf G
Sun Mar 22, 2020 2:36 pm
Forum: Equipment Discussions
Topic: Thorlabs ITL200 as tube lens&setup for Coolscan 8000ED l
Replies: 15
Views: 2212

nielsgeode wrote: It's a shame I have the 8000ED lens here in my drawer for a year without even having used it even once.
It's a great lens. Give it a try.

ImageFlowers V by Olaf Gnau, auf Flickr
by Olaf G
Sat Mar 21, 2020 2:59 pm
Forum: Equipment Discussions
Topic: Thorlabs ITL200 as tube lens&setup for Coolscan 8000ED l
Replies: 15
Views: 2212

Hi Niels, according to my MTF tests and others' tests and experience, about 90% of all lenses we tried benefit from using tube lens instead of plain extension tubes (or bellows). But majority of scanner lenses (Coolscan 8000 included) perform better when just extended. And their magnification sweet...
by Olaf G
Tue Dec 10, 2019 1:59 pm
Forum: Equipment Discussions
Topic: Scan Nikkor ED 7-Element for Camera-Scan
Replies: 4
Views: 771

As Lou says, the 7 element Scanner Nikkor is designed to cover 24mm on the object size and approx. 32mm on the sensor side, i.e. 1.33x magnification. The dot shows towards the sensor, it doesn't perform well on full frame the other way around. I like it for hiking on full frame when corner quality i...
by Olaf G
Sun Mar 31, 2019 12:31 pm
Forum: Equipment Discussions
Topic: Polaroid 43.53mm F/6.6
Replies: 22
Views: 6913

The 7-element Scanner Nikkor was built to project 24mm film (the short edge of 35mm film) on a 32mm sensor, i.e. it was designed for 1.33x magnification. Using the lens on full frame is already stressing the design quite a lot but it works reasonably well. Using it at 2.3x is simply too much... just...
by Olaf G
Fri Mar 29, 2019 4:19 pm
Forum: Equipment Discussions
Topic: Polaroid 43.53mm F/6.6
Replies: 22
Views: 6913

The 7-element Scanner-Nikkor ED @ 1.3x looks strange to me. I use it on full frame @ 1.2x and it performs very well at the edges. Was it mounted in the intended way, i.e. with the paint dot towards the sensor?
by Olaf G
Sun Jan 27, 2019 5:26 am
Forum: Equipment Discussions
Topic: Telecentric Scanner-Nikkor ED LENS: Nikon 8000 ED lens
Replies: 70
Views: 21904

Great pictures, Markus!
by Olaf G
Thu Jan 24, 2019 12:02 am
Forum: Equipment Discussions
Topic: Telecentric Scanner-Nikkor ED LENS: Nikon 8000 ED lens
Replies: 70
Views: 21904

Markus, I like this picture even more!
Thank you for posting your setup. I think I need a linear stage with micrometer adjustments... 8)
by Olaf G
Wed Jan 23, 2019 10:58 am
Forum: Equipment Discussions
Topic: Telecentric Scanner-Nikkor ED LENS: Nikon 8000 ED lens
Replies: 70
Views: 21904

etalon wrote: Here is my very first pic with that beautyful lens.
Outstanding work, Markus!
I am looking forward to seeing more pictures taken with that lens.
by Olaf G
Sun Jan 20, 2019 10:22 am
Forum: Equipment Discussions
Topic: Telecentric Scanner-Nikkor ED LENS: Nikon 8000 ED lens
Replies: 70
Views: 21904

Haven't had the opportunity to use it that often but I will post more...

https://www.flickr.com/photos/62289058@N03/albums
by Olaf G
Wed Jan 09, 2019 4:04 pm
Forum: Equipment Discussions
Topic: Telecentric Scanner-Nikkor ED LENS: Nikon 8000 ED lens
Replies: 70
Views: 21904

Olaf, thank you very much for the clarification ... this confirms that, in telecentric mode and although I can not explain it, I get the best quality of the Coolscan 8000 in reverse mode with respect to its original position in the scanners: the paint dot (two rings) towards the subject. Maybe beca...
by Olaf G
Wed Jan 09, 2019 2:38 pm
Forum: Equipment Discussions
Topic: Telecentric Scanner-Nikkor ED LENS: Nikon 8000 ED lens
Replies: 70
Views: 21904

P.S. The 4000 lens have a paint dot at one side on the barrel. This is the side, which is pointing to the sensor (original orientation). I don‘t know, whether the 8000 lens have also that paint dot (but I think so). This should also be the side pointing toward the sensor in original application... ...