Search found 200 matches

by typestar
Thu Jul 18, 2019 10:41 am
Forum: Equipment Exchange
Topic: FS: Nikon Coolscan 5000 (ED) Scanner lenses
Replies: 0
Views: 1616

FS: Nikon Coolscan 5000 (ED) Scanner lenses

I want to raise some funds for a new camera & I have to clean my desk, have some spare lenses (whioch I have a second copy of) and perhaps you also will be happy with them ... A) 1 Nikon Coolscan ED 5000 Scanner lens. This is the apochromatically corrected 7 elements lens , tested by Robert O'Toole ...
by typestar
Thu Jul 18, 2019 6:08 am
Forum: Equipment Exchange
Topic: SOLD: Minolta Dimage Scan Elite 5400 Scanner lens +adapter
Replies: 1
Views: 1669

SOLD: Minolta Dimage Scan Elite 5400 Scanner lens +adapter

This is SOLD - Thankyou for your interest. I sell my second copy of the beautiful "hall of fame" Minolta Dimage Scan Elite 5400 Scanner lens (out of a Scan Elite 5400 scanner) to the appreciated members here. (Robert O'Toole's tests are incredible and all the hunting for this lens makes is not easy...
by typestar
Fri Jun 28, 2019 4:03 am
Forum: Equipment Discussions
Topic: 135mm EL Tube Lens Test Suggestions
Replies: 18
Views: 1784

Re: 135mm EL Tube Lens Test Suggestions

While working on 135mm EL tube lens test I was side-lined with an unplanned stay at the hospital. Hi Robert, I hope it was nothing seriously that you kept in hospital and I hope you are fine again! Give me some advice on what would be a nice front lens to use for part 2 of the test Your / the ("new...
by typestar
Mon Jun 17, 2019 2:19 pm
Forum: Equipment Discussions
Topic: Rodenstock Rodagon WA 40mm f4 Test Ex IQ and bargain price
Replies: 12
Views: 1409

Big Update! ....None of the results were anything special until the last one, the Schneider Makro Symmar 5.6/120 and results are fantastic. Rodagon WA 4/40 + Schneider 5.6/120 Makro Symmar, at 3X and 100% view... The image is better all around on the MS120. The field is flatter and the corner sharp...
by typestar
Sun Dec 16, 2018 1:58 pm
Forum: Equipment Discussions
Topic: Lomo 3.7x Objective Extension vs Stacked Test Images
Replies: 18
Views: 7272

Glad you liked the results. Others mentioned the improvement wasn't exactly striking but for me the difference was more than I expected and I was really glad to see that the SK lens didn't introduce any CAs. .... Robert, great test again -- such a tiny lens with even - visible - better results with...
by typestar
Wed Nov 21, 2018 12:37 pm
Forum: Equipment Discussions
Topic: Can we use Mitty NIR ?
Replies: 18
Views: 3511

Christian, maybe we are miscommunicating. (...) The specs clearly say that the lens is NOT apo corrected over the whole visible spectrum. It is corrected for 480nm-1800nm. In contrast, the wavelength range of the normal 10x apo is 435nm-655nm. .... I don't know how bad they will be, but there must ...
by typestar
Wed Nov 21, 2018 11:45 am
Forum: Equipment Discussions
Topic: Can we use Mitty NIR ?
Replies: 18
Views: 3511

No, for the reasons I just gave. The specs clearly say it is not corrected for blue light. Lou, perhaps I said it not clear enough: I'm, for myself, not interested in the near UV correction / blue light at all and did not point to the correction of the blue light. I just wanted to explain, that the...
by typestar
Wed Nov 21, 2018 11:32 am
Forum: Equipment Discussions
Topic: Can we use Mitty NIR ?
Replies: 18
Views: 3511

... Yes, the spectral range is bigger than that of the ordinary Mitutoyo lenses, but the range is also shifted toward the IR end of the spectrum. Lou, if I try to read it critical AND if the wording in the Mitu description is not just plain / fooling advertising -- for "our" normal use of light in ...
by typestar
Wed Nov 21, 2018 11:14 am
Forum: Equipment Discussions
Topic: Can we use Mitty NIR ?
Replies: 18
Views: 3511

My guess would be big blue/purple CA. Hi Lou, do you meant this " big blue/purple CA" for the range outside the specification or do you mean this for the complete objective? "Mitutoyo’s NIR, NUV, and UV infinity corrected long working distance objectives combine the benefits of the standard M Plan ...
by typestar
Sun Nov 04, 2018 9:43 am
Forum: Equipment Discussions
Topic: 2X Line Scan vs Scanner Lens Test
Replies: 8
Views: 1819

great test, once more

Dear Robert,

a great test, again as we could expect from you...

And again as we see the result of the Minolta and the "cheap" Tominon 35 mm in the second place (if we consider a reasonable price for most of us): I love the tiny setup / length that both need.

All the best,

christian
by typestar
Tue Oct 23, 2018 4:17 am
Forum: Equipment Discussions
Topic: Mitutoyo 10 Objective Tube Lens Tests
Replies: 31
Views: 4805

Mitutoyo 20X NA 0.42 -- pushed down to 10x

... It would be interesting to test all objectives with a very short tube lens, short enough to show at least a trace of vignetting. A 90mm or 100mm or 105mm lens, for example. Thanks for the idea Lou.... I can try each objective with one good shorter tube like a Sigma 150mm or the Makro-symmar 120...
by typestar
Thu Oct 18, 2018 11:15 am
Forum: Equipment Discussions
Topic: APO Corrected 1.35x Scanner Lens For $20 PrimeFilm 3650u
Replies: 78
Views: 11959

Screen Cézanne Scanner -- not a bargain :-)

As it was the best in the testing (sharpness, overall image quaility...): If you have "some" money and look for a SCREEN Cezanne Elite Scanner, optical. res. = 5300 ppi -- and if you are interested in its lens inside... here is one sitting - and: .... waiting ;-) https://www.ebay.co.uk/itm/Screen-Ce...
by typestar
Thu Oct 18, 2018 7:17 am
Forum: Equipment Discussions
Topic: APO Corrected 1.35x Scanner Lens For $20 PrimeFilm 3650u
Replies: 78
Views: 11959

Hi Ray,

great, that you find the article interesting

I also offer the "real" Magnagon 5.6 / 75 mm, with fixed aperture (same as the ebay-offer in spain) I offer here for a good price for the highly appreciated members. The red filter is removable, of course...

Best wishes to all of you,

Christian
by typestar
Thu Oct 18, 2018 3:57 am
Forum: Equipment Discussions
Topic: APO Corrected 1.35x Scanner Lens For $20 PrimeFilm 3650u
Replies: 78
Views: 11959

Lou Jost wrote:Christian, in the case of the Scitex scanners... for scanning 35mm film, these same Scitex scanners used lenses (110mm) that were well-matchedto the sensor. The Scitex 110mm is really good.
Dear Lou, thankyou for pointing to this!

Christian
by typestar
Thu Oct 18, 2018 3:49 am
Forum: Equipment Discussions
Topic: APO Corrected 1.35x Scanner Lens For $20 PrimeFilm 3650u
Replies: 78
Views: 11959

Lenses in Film- and legacy Highend-Scanners

Sorry Christian, the LS-30 deal fell through. ...However .. an offer was accepted on another LS-30, so now I just need to wait. I will do a quick report on the physical aspects of the lens, but not sure I will be able to test it effectively if its FL is too short. Scitex S-2 and Scitex S-3 series o...