Slide projectors - 35 mm endless projection.

Pedro Pinto Basto · Oct 7, 2017

Hello.

I will be really happy if you could help me with a serie of questions about slide projection.

I'm thinking of making a endless projection of slides, with a slide projector that it isn't necessary to press the bottom for the next slide be projected. I read from this forums that the better is to buy a Kodak ou Rollei slide projector with circular carrier.

Do you know if I can adjust the time of slide projections, for example 60 seconds or more for each slide? And do you know if the projection continues without any slide in the projection of all slides? I mean slide 4, 5, 6 and 7 and the 8 slide aren't in the carrie and the projection starts again at the 9 slide.

And do you know if it safe to mount slides at home?

Thank you.

chip j · Oct 7, 2017

I would google the instruction manuals.

MattKing · Oct 8, 2017

Yes you can mount slides at home.
I'm not aware of any projectors with a built in times that provides for projection times for each slide that are as long as 60 seconds. You might want to research the separate "dissolve" control systems that one would program (sometimes using cassete tapes) and then connect to dissolve control jacks on the back of the projector.
Or you could look for a Kodak interval timer: https://shop.van-eck.net/SL-0032.html

bdial · Oct 8, 2017

60 seconds is a long time for the slide to sit in the light path getting hot, that may cause you problems unless the projector has good cooling.

On the projectors I've used, there is no problem (for the projector) with skipped positions, but the white screen isn't nice to look at. The usual solution is to use slides that are blank or else an opaque material mounted in a slide mount.

bsdunek · Oct 8, 2017

My Airquipt has a timer that goes to 60 sec. With the round magazine it will just keep going. If you want to have blank slides, as said above, put an opaque mount in. You certainly don't want to shock people with a blank slide.

Chan Tran · Oct 8, 2017

If you get the Kodak Ektapro line of projector you can use a PC to control the projector.

Pedro Pinto Basto · Oct 8, 2017

Chan Tran said:
If you get the Kodak Ektapro line of projector you can use a PC to control the projector.

Thank you very much. And thank you all that reply to my questions.

Can you control a PC to change the projection time of each projected slides? Can you have some slide in one time of projection, and others slides in other time? And can you control the projector to project the slides without you have to be near by working with the PC, in the time the projector is working?

Do you know any other site with more information bout connecting the slide projector to the PC?

mshchem · Oct 8, 2017

Pedro Pinto Basto said:
Thank you very much. And thank you all that reply to my questions.

Can you control a PC to change the projection time of each projected slides? Can you have some slide in one time of projection, and others slides in other time? And can you control the projector to project the slides without you have to be near by working with the PC, in the time the projector is working?

Do you know any other site with more information bout connecting the slide projector to the PC?

I love slides. There's a lot of equipment out there. I would worry about the slides fading. You might consider scanning and using a LED projector with a lap top.

Chan Tran · Oct 8, 2017

Pedro Pinto Basto said:
Thank you very much. And thank you all that reply to my questions.

Can you control a PC to change the projection time of each projected slides? Can you have some slide in one time of projection, and others slides in other time? And can you control the projector to project the slides without you have to be near by working with the PC, in the time the projector is working?

Do you know any other site with more information bout connecting the slide projector to the PC?

I have downloaded a number of documents for these projectors but since I didn't have the money and you would understand that I was leaning toward digital. These projectors I think have been discontinued but they are quite expensive used. The website that had the most information for them is Kodak but I don't know how to find the link now. If I find my documents or the link I will let you know. I think the 60 sec is no problem.

Chan Tran · Oct 8, 2017

Check out this brochure
http://resources.kodak.com/support/pdf/en/manuals/slideProj/ektapro_QuickReferenceGuide.pdf
I think you can do what you want with one of these projectors without the need for the PC interface. They can do up to 60 sec and they can automatically darken the missing slides.
But they do have the PC interface for much more fancy operation.

PittP · Oct 9, 2017

mshchem said:
I love slides. There's a lot of equipment out there. I would worry about the slides fading. You might consider scanning and using a LED projector with a lap top.

About every important aspect on the topic had been mentioned in Pero's 1st and this thread.
Slides fading is a real issue in very frequent projections. The best remedy would be to make duplicates on slide duplicating film (slide duplicator attachment and high-quality macro lens). For one or a few trays that's no big deal.
Projectors: High-end Kodaks and Leitz with circular trays are hardly (or not, I'd guess) to beat - handling, reliability, brightness and keeping the slides as cool as practically feasable. The Rollei twin offers fade-over convenience from a single tray in a single projector (endless projection can be programmed, with a short break when returning from the last to the 1st slide), the 250W-version appears not as bright as the late Kodaks though when compared side by side.
Scanning and LED projection should alter the experience significantly: bright, contrasty, "punchy". While high-resolution digital projectors are very expensive, their resolution is way behind a good slide projection (24x36mm slide).
Pedro, let us know what your final take will be.
best! Pitt

Pedro Pinto Basto · Oct 9, 2017

PittP said:
About every important aspect on the topic had been mentioned in Pero's 1st and this thread.
Slides fading is a real issue in very frequent projections. The best remedy would be to make duplicates on slide duplicating film (slide duplicator attachment and high-quality macro lens). For one or a few trays that's no big deal.
Projectors: High-end Kodaks and Leitz with circular trays are hardly (or not, I'd guess) to beat - handling, reliability, brightness and keeping the slides as cool as practically feasable. The Rollei twin offers fade-over convenience from a single tray in a single projector (endless projection can be programmed, with a short break when returning from the last to the 1st slide), the 250W-version appears not as bright as the late Kodaks though when compared side by side.
Scanning and LED projection should alter the experience significantly: bright, contrasty, "punchy". While high-resolution digital projectors are very expensive, their resolution is way behind a good slide projection (24x36mm slide).
Pedro, let us know what your final take will be.
best! Pitt

Thank you for the reply and for the help.

Do you know if with a intervaler timer, the projector can work more than 60 sec? I know that one that one https://shop.van-eck.net/SL-0032.html gives more than 60sec of projection, but I don't know what about the kodak interval timer.

Kind regards,
Pedro.

trendland · Oct 9, 2017

Pedro Pinto Basto said:
Thank you very much. And thank you all that reply to my questions.

Can you control a PC to change the projection time of each projected slides? Can you have some slide in one time of projection, and others slides in other time? And can you control the projector to project the slides without you have to be near by working with the PC, in the time the projector is working?

Do you know any other site with more information bout connecting the slide projector to the PC?

If you can afford a Kodak carousel proffessional multimedia projektor :
EVERYTHING is possible.
Last I saw was at Volkswagen somewere
in the 90th.
A show with 12 (or 16 - I can not exakt remember) synchron computer aided Kodak projektors.
These stuff is discontinued since more tv an a decade I would guess.
And you may need software Not compatible with todays windows.
But it will obviously run on old dos computers.
But now to the slides : There is No protection possible with endless run and
60 sec. seperation.
But it will surely work to some days.
After this you will definitifely have a rest of colors on your slides with massive shifts.
Notice : Proffessional multimedia shows in the past worked ALLWAYS with coppies.
Often these slides were throwing away after just one show (a show often ended after some days with several performances - like the "Detroit Motor Show "

And to throw away your slides is the possible result of your practice with endless run.
Better no original slides.......

!

with regards

jmlynek · Oct 9, 2017

Pedro,

In the 1980's and '90's when multi-projector productions were the standard for presentation work, there was an industry based on equipment that could do precisely what you want. However, that equipment has probably ended up in the landfill. In addition to that equipment, you would need old PC or Apple ][ software to program the equipment and a multi-track tape player to send signals to the dissolve units. The units that I am familiar with were AVL Doves and Electrosonic 4003 projector controllers. Each controller could control up to three projectors each. They show up on Ebay every once in a while. http://www.ebay.com/itm/Multi-Image-Controller-ES-4003-ELECTROSONIC-ES4003-/151726396680, http://www.ebay.com/itm/AVL-Dove-X-...516205?hash=item3aeb48be2d:g:jM8AAOSwc2FZcQ5n

Today, you're better of scanning the slides and running the presentation through a video projector and a laptop.

BTW, should you wish to continue with this using slides, make sure that you mount them in glass mounts. The best are by Wess. They are easy to use and have little pins that hold the film in place so it doesn't shift over time. http://www.wessmounts.net/id3.html

Best of luck.

Chan Tran · Oct 9, 2017

Pedro Pinto Basto said:
Thank you for the reply and for the help.

Do you know if with a intervaler timer, the projector can work more than 60 sec? I know that one that one https://shop.van-eck.net/SL-0032.html gives more than 60sec of projection, but I don't know what about the kodak interval timer.

Kind regards,
Pedro.

If you only want the 60 sec plus time I can make a device to do that wit just about any Kodak carousel projector. skipping slides is more difficult as well as having different sequence each turn around is more difficult.

Pedro Pinto Basto · Oct 9, 2017

Chan Tran said:
If you only want the 60 sec plus time I can make a device to do that wit just about any Kodak carousel projector. skipping slides is more difficult as well as having different sequence each turn around is more difficult.

I found out one Kodak interval timer - And at the site - https://www.van-eck.net/itable.php?lang=en&size=&cat=dia&merk=91&type=Carousel S-AV 1010 says that the Kodak Carousel S-AV 1010 works with self timer.
Do you know if it works to with the kodak S-AV 2050 projector? And does someone knows what is the maximum time the slides are projected with that timer?

Thanks everyone that help me out.

Kind regards,

Pedro

Chan Tran · Oct 9, 2017

Pedro Pinto Basto said:
I found out one Kodak interval timer - And at the site - https://www.van-eck.net/itable.php?lang=en&size=&cat=dia&merk=91&type=Carousel S-AV 1010 says that the Kodak Carousel S-AV 1010 works with self timer.
Do you know if it works to with the kodak S-AV 2050 projector? And does someone knows what is the maximum time the slides are projected with that timer?

Thanks everyone that help me out.

Kind regards,

Pedro

The Kodak Interval Timer works with both the S-AV 1010 and S-AV 2050 but the time intervals are only from 4 to 40 seconds. Using the same socket that the timer plugged into you can devise something to advance the slides in any interval you want. That is the easiest part in your requirement.
These more advanced projectors (as compared to a standard carousel) do have a blind that blocks out the light when there is an empty slot in the slide tray. However, the timer must know that and shorten the interval but still there are dark interval without images.

AgX · Oct 10, 2017

jmlynek said:
BTW, should you wish to continue with this using slides, make sure that you mount them in glass mounts.

There is a long discussion whether to use glass or glassless mounts concerning storage. Amongst the latter are designs that hold the film under tension to keep it in focal plane.

George Mann · Oct 10, 2017

Whats wrong with plastic mounts?

darkroommike · Oct 10, 2017

George Mann said:
Whats wrong with plastic mounts?

For extended projection the glass mounts provide some UV protection. When we did a lot of this (old AV guy here) we used dupe slides for shows that ran continuously, the dupe film of that time was reputed to have better longevity when projected.

darkroommike · Oct 10, 2017

Some projectors can use a couple of different bulbs. There is usually a standard bulb, a brighter bulb for long throw projection, and a dimmer long life bulb (this would also put out less light and might reduce fading).

Pedro Pinto Basto · Oct 10, 2017

Does anyone knows how it works a reflecta RG 750 CS? It's a slide month machine but I don't know how it works.

AgX · Oct 11, 2017

darkroommike said:
For extended projection the glass mounts provide some UV protection. When we did a lot of this (old AV guy here) we used dupe slides for shows that ran continuously, the dupe film of that time was reputed to have better longevity when projected.

There is already a thick IR filter in the optical path. It should have a UV density too. If the two thin panes of a slide mount should have a significant UV density, then one could add such glass to the projector.
Modern standard halogen bulbs have an integrated UV filter. But I do not know whether this comes true for the overrated projector bulbs too.
Reducing the feed voltage a bit can be another means.

BMbikerider · Oct 11, 2017

Chan Tran said:
If you get the Kodak Ektapro line of projector you can use a PC to control the projector.

Most certainly. Years before the digital side of things reared it's head (I think around 1995) I saw a presentation where the organiser used multiple Ektapro projectors (I think there were about 8) all controlled via a basic computer set up to make the presentation and this was continuously repeated for several hours. It also contained fade in and fade out sequences, backwards and forwards and normal projection. The team that set it up were obviously experts in their job but after 22 years or so, it must be a lot easier now.

PittP · Oct 11, 2017

Pedro Pinto Basto said:
Does anyone knows how it works a reflecta RG 750 CS? It's a slide month machine but I don't know how it works.
View attachment 188120

Works ONLY with CS slide frames (not CS-2). push in film from the left, insert open frame from the right, advance film into frame (grey thumb wheel) - press red button... (provided batteries and motor work) ... may be a framed slide comes out, may be it got screwed and - I dare not mention...
Good luck!!

Slide projectors - 35 mm endless projection.

Moderator

Privacy & Transparency

Privacy & Transparency