Manual Focus Lenses Forum Index
 FAQFAQ   SearchSearch|Quick search    MemberlistMemberlist   UsergroupsUsergroups  Rss feed   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Full-frame slide duplicator for crop-sensor

Post new topic   Reply to topic    Manual Focus Lenses Forum Index -> Techniques
View previous topic :: View next topic  
Author Message

Level 4

Joined: 07 Mar 2008
Posts: 5611
Location: San Francisco, USA

Expire: 2015-05-17

PostPosted: Thu Oct 30, 2008 1:58 am    Post subject: Full-frame slide duplicator for crop-sensor Reply with quote

I have a flatbed scanner, but I am very dissatisfied with the results and especially with the very slow scanning.

I was inspired by this group to look at slide duplicators as an alternative. There are plenty of these available, leftovers from the last age of photography. They look very attractive because on a DSLR they promise almost instant duplication.

However, for a crop sensor DSLR they have a big disdvantage. Most of them are actually fixed-focus macro lenses designed to give a full 35mm frame 1:1 reproduction of a slide - or on the "zoom" versions, more than 1:1. With a crop-sensor DSLR we want LESS than 1:1, because we want to fill the smaller DSLR frame with the whole slide image. If we use one of the regular duplicators we will end up cropping the slides. This might be OK for some things, but as one of my objectives is to get real wide angle results out of my wide angle lenses, I might as well just use these on my DSLR.

I found this very interesting item -

This setup is from the camera end - a 20mm M42 extension ring, the Super-Takumar 35/3.5, a 49mm->SeriesVI adapter, and the Accura duplicator.

This is an Accura "Variable Magnification Duplicator". Instead of having a fixed-focus lens, this is just a slide holder that fits an existing lens. This allows all sorts of adjustments with bellows or extension rings, and the use of any lens. In this case I used my Takumar 35/3.5, but I also tried it with my Takumar 55/1.8. Both work, but the 35mm requires less extension on both sides of the lens, and gives the same results.

Some test shots - this is a 30-year old Ektachrome, not perfectly focused, but typical of old snapshots -

Scanned on my Canon 8400 flatbed at 2400dpi -

Copied on the duplicator (6MP on my Pentax K100D)

The duplicator shot was underexposed, and I bumped up the contrast, losing shadow detail. There is also probably less tonal range. But I do get the whole slide- in this case maybe a little more than the whole.

Scanner crop -

duplicator crop -

It looks like the ability to capture detail is about the same, though the exposure needs to be carefully calibrated. It is MUCH faster though ! Not perfect so far, but I think its promising.
I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work.
Back to top
View user's profile Send private message Send e-mail  Rating: Acknowledged

Level 4

Joined: 28 Feb 2007
Posts: 8128
Location: near High Wycombe, UK

Expire: 2014-01-04

PostPosted: Thu Oct 30, 2008 10:41 am    Post subject: Reply with quote

That's a great ingenious idea Luis! I don't have one of those duplicators - I've been trying to use a Pentax slide copier unit on bellows, but it's optimised for a 35mm camera and the bellows force the camera too far away from the slide. I've worked out a way of mounting the slide copier unit directly to the camera without using the bellows rail. It's very simple and works perfectly but I can't finish it until my neighbour returns from holiday to let me borrow his lathe again. Smile

About the under-exposure, what light source did you use behind the slide? After trying various lamps and windows I'm beginning to think a flash unit might be best.
Peter - Moderator
Back to top
View user's profile Send private message  No rate

Joined: 24 Feb 2007
Posts: 29916
Location: West Emilia

Expire: 2012-12-04

PostPosted: Thu Oct 30, 2008 11:04 am    Post subject: Reply with quote

I have one of those duplicators - for Nikon.
Unfortunately I don't seem to be able to find the slide holder for it. I need to search more for it.
Orio, Administrator

Ferrania film is reborn!
Support the Ornano film chemicals company and help them survive!
Back to top
View user's profile Send private message Visit poster's website  No rate

Level 3

Joined: 04 Apr 2007
Posts: 1865
Location: Romania

PostPosted: Thu Oct 30, 2008 11:32 am    Post subject: Reply with quote

I had the same idea but my problem is that I don't have nor film holder nor slide holder Sad I've found even the device to light the slide/film form behind : an old dia projector from which I took off the front lens.
Canonet QL17 III
Zenit E , Helios-44 58mm f:2.0 , Tair-11A 135mm f:2.8, Jupiter-9 85mm f:2.0,
Carl Zeiss Jena Flektogon 35mm f:2.4
Pentax MX, ME Super, Chinon CE4/CM4, Petri MC 28mm f:2, smc Pentax-M 50mm f:1.7, Soligor T 135mm f:2.8
Minolta X500, Tokina 28/2.8, Rokkor 50/1.7, 80-205/4.5
Nikon D90, Nikkor 35/2.0, Nikkor 50/1.8, Sigma 24/2.8, Nikkor 18-105 VR
Back to top
View user's profile Send private message Visit poster's website Yahoo Messenger  No rate
Screamin Scott

Level 3

Joined: 13 Oct 2007
Posts: 1064
Location: Dallas, Georgia USA

PostPosted: Thu Oct 30, 2008 11:41 am    Post subject: Reply with quote

I picked up an old Spiratone slide duplicator off of eBay cheap & used that on a Nikon D70s with acceptable results in many cases. Main problem being dust on the slides was a pain to remove in post processing. You need to clean them off really good before you duplicate them...
Cameras-Nikon D300, D7100,D70s,N2000,FE2,FTN ,FT2,N90s &N70
Nikkor AF Zooms=28-105/3.5D,18-55/3.5GS,28-70/3.5D,35-135/3.5
Nikkor AF //50/1.8,//Nikkor MF//50/2ai,50/1.8ais 50/1.4ai,24/2.8ais,28/2.8ai,28/3.5ai,55microAis/2.8,105/2.5ai,200/4ai,300/4.5ai35-135/3.5Ais
Kiron /Kino madelenses//70-210/4ai,28-105/3.2ai,30-80/3.5ai,Viv 28/2ai,35-85/2.8aiVivS1,105/2.8AisDine,24-48/3.8ai VivS1,50-150/3.8aiViv,28-85/2.8aiViv,100/2.8Nai Viv,70-210/3.5Nai Viv,28/2.5ai VivKomine made Viv//24/2Ais,135/2.8aiCF,28-50/3.5ai,28-90/2.8ai Viv S1,80-200/4.5aiCosina made Viv 19/3.8 Ais...Also Sigma 24/2.8 Ais Tokina made24/2.8ai VivAF Sigma 21-35/3.5,& other lenses
Back to top
View user's profile Send private message Visit poster's website  No rate
A G Photography

Level 3

Joined: 11 May 2008
Posts: 1480
Location: Bologna - Italy

PostPosted: Thu Oct 30, 2008 11:55 am    Post subject: Reply with quote

I managed to use the scan holders to keep the film firm, some diffuse light behind and the camera with a lens on a bellow on a tripod, centering the tripod to the frame and move the bellow to get the right focus, then one just have to keep note where the holder is placed and swap the slides around.

Mostly slide copier need the slides to be framed while mines are still in rolls of 3-4.

My Photography Website
My Blog about Photography and Italian Cuisine
My Photostream on Flickr

DSLR: Nikon d80, Olympus e410
SLR: Chinon CX, Fujica ST605n, Nikon f601, Pentacon FM, Pentax Spotmatic SPII, Praktica FX, Praktica FX2, Voigtlander VST1, Yashica FX-3, Zeiss Contaflex
RF: Altissa Altix, Zorki Ie, Kiev 4b
Medium Format: Pentacon Six TL, Zeiss Ikonta 520/2, Mockba 4, Voigtlander Bessa I, Agfa Isolette II, Agfa Isola
Large Format: Cambo SC 4x5, Rodenstock Sinaron 150/5.6, Rodenstock Rodagon 150/5.6, Schneider Kreuznach Symmar 180/5.6
Nikkors: 28/3.5 AIS, 35/2, 50/1.8, 50/2 H, Micro 55/3.5, Micro 60/2.8, 85/1.8, 135/3.5 AI, 200/4 NAI, 18-55/3.5-5.6, 28-80/3.5-5.6, 55-200/4-5.6
CY: Distagon 28/2.8, Planar 50/1.4, Yashika 50/1.7, Sonnar 135/2.8
CZJ m42-Exakta: Flektogon 20/4, Flektogon 35/2.8, Tessar 40/4.5, Tessar 50/2.8, Pancolar 50/1.8, Pancolar 50/2, Biotar 58/2, Biotar 75/1.5, Tessar 80/2.8, Sonnar 135/3.5, Sonnar 135/4, Triotar 135/4
CZJ P6: Flektogon 50/4, Flektogon 65/2.8, Biometar 80/2.8, Biometar 120/2.8, Sonnar 180/2.8
Meyer-Pentacon: Orestegon 29/2.8, Pentacon 29/2.8, Lydith 30/3.5, Primagon 35/4.5, Helioplan 40/4.5, Domiplan 50/2.8, Primotar 50/3.5, Oreston 50/1.8, Primoplan 58/1.9, Orestor 100/2.8, Trioplan 100/2.8, Helioplan 135/4.5, Orestor 135/2.8, Pentacon 135/2.8, Primotar 135/3.5, Primotar 180/3.5, Telemegor 180/5.5, Orestegor 200/4, Pentacon 200/4, Orestegor 300/4, Telemegor 300/4.5, Telemegor 400/5.5
Schneider-Kreuznach: Curtagon 28/4, Curtagon 35/2.8, Xenon 50/1.9, Xenar 50/2.8, Tele Xenar 135/3.5, Tele Xenar 200/4
Russians: Arsat Zodiak 30/3.5, Mir-I 37/2.8, Volna-9 50/2.8, Industar-50 50/3.5, Industar-61 50/2.8, Helios 44 58/2, Helios 44-2 58/2, Helios 44-M-4 58/2, Volna-3 80/2.8, Helios 40 85/1.5, Jupiter 9 85/2, Jupiter 11 135/4
Others: Chinon-Tomioka 55/1.4, Helios 28/2.8, Isco Iscotar 50/2.8, Konica Hexanon 40/1.8, Ludwig Meritar 50/2.9, Schacht Travegon 35/3.5, Schacht Travenon 135/4.5, Sekor 55/1.8, Sigma MF 28/2.8, S-Takumar, 28/3.5, S-Takumar 50/1.4, S-Takumar 55/1.8, S-Takumar 55/2, Steinheil Quinar 135/2.8, Steinheil Culminar 135/4.5, Vivitar 135/2.8, Voigtlander Ultron 50/1.8, Yashica Yashinon DX 50/1.4, Zuiko MC Auto-W 28/2.8
Back to top
View user's profile Send private message MSN Messenger  No rate

Level 3

Joined: 04 Nov 2007
Posts: 750
Location: Brugelette, Belgium

PostPosted: Thu Oct 30, 2008 11:56 am    Post subject: Reply with quote

I had the same idea .... Some time ago, I won a Praktica and a few lenses. Amongst them was a Prinz zoom slide duplicator.

What I did was to remove the slide holder, fix it on a PVC tube fitted at the other end with a filter thread.

I screw it at the end of a 50mm and mount the lens with an extension ring ...

Still need to find a way to use that duplicator for negative ... maybe a 6x6 slide glass to hold the neg could do the trick ...
The gear I use : Pentax K200D, a few Tamron, Pentax, Nikon and Russian lenses (Modded Sony DSC-V1 for Infrared)
PP : Gimp & Ufraw on Linux Mint Debian
Flick :
Back to top
View user's profile Send private message MSN Messenger  No rate
Display posts from previous:   
Post new topic   Reply to topic    Manual Focus Lenses Forum Index -> Techniques All times are GMT
Page 1 of 1

Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Powered by phpBB © 2001, 2005 phpBB Group