Hacking a Carousel slide projector?

[Sirius Glass]

Definitely. I can even get them fairly locally. But my concern is that even with heat-absorbing glass, there is considerable heat that can't be doing them any good. It makes the slides pop in short order, necessitating refocusing.

How else will the slides get exercise?

 

[lxdude]

How else will the slides get exercise?

OK, you got me there..

 

[mshchem]

There is/was a company that converted Carousels into quick slide DSLR Digitizers. Used some crazy LED source. The one I've seen running Used a cropped sensor Nikon DSLR and a macro lens.

Market niche was putting family slides on a card or stick. It would run at about 1 slide every 2 or 3 seconds. This was back 5 years or longer.

 

[xkaes]

I just nabbed a like-new, in the box, Tamron 38mm (1.5") f2.5 projection lens for $0.99¢. I was the only bidder -- much to my surprise. Now comes the fun part.

 

[jay moussy]

There was a Carousel with "2x2 viewer" accessory on local CL.

It this was is sometimes refered to as "superslide", off 120 film?

 

[AgX]

"Superslide" was the designation of a slide mount with the standard 50x50mm outer but a nominally 40x40mm opening. Thus yielding the chance to project full-size images from type 127 film or cut-outs from types 120, 220 and 70mm, typically already composed for that smaller image size.
By this one could use the common projectors and storage systems for MF slides.
Typically the condensor had to be changed for full-edge illumination of superslides. Anyway superslides and standard slides could be projected intermingled.

 

[AgX]

The viewer you refer to I assume has nothing to do with superslides, but instead is a 2x2" groundglass screen attachment for off-screen viewing/sorting of slides.

 

[Chan Tran]

"Superslide" was the designation of a slide mount with the standard 50x50mm outer but a nominally 40x40mm opening. Thus yielding the chance to project full-size images from type 127 film or cut-outs from types 120, 220 and 70mm, typically already composed for that smaller image size.
By this one could use the common projectors and storage systems for MF slides.
Typically the condensor had to be changed for full-edge illumination of superslides. Anyway superslides and standard slides could be projected intermingled.

Nothing needs to change to project the 2x2 slide.

 

[AgX]

Nothing needs to change to project the 2x2 slide.

As I said above:

Anyway superslides and standard slides could be projected intermingled.

You CAN project superslides in any 35mm projector.


BUT:

The illumination in a 35mm projector is typically optimized for a 42mm window. Thus for the 57mm of the superslide the illumination must be adapted.
This is explicetely described at the manuals of Carousel models.

Of course manufacturers have also chosen to leave it at the 35mm format, or to design the projector from the start for the superslide format, which then reduces the illumination of the 35mm slide.


That you do not see such issue mentioned at your model of projector does not mean that the issue does not exist... optics are universal...

 

[Chan Tran]

As I said above:



You CAN project superslides in any 35mm projector.



BUT:

The illumination in a 35mm projector is typically optimized for a 42mm window. Thus for the 57mm of the superslide the illumination must be adapted.
This is explicetely described at the manuals of Carousel models.

Of course manufacturers have also chosen to leave it at the 35mm format, or to design the projector from the start for the superslide format, which then reduces the illumination of the 35mm slide.


That you do not see such issue mentioned at your model of projector does not mean that the issue does not exist... optics are universal...

I guess the vignetting is not that bad. I borrowed a good number of 2x2 slides from the library and they projected fine with my Ektagraphic III. I tried to scan them it's when my 35mm slide scanner won't scan the whole frame. So I have to use the digital camera instead.

 

[Terrence Brennan]

As for spare parts, unfortunately the parts that failed on my 750H were plastic gears, and all those plastic parts are now about the same age, so...

When I replaced these gears the first time, in 2010, I believe the parts might have been new old stock from Kodak. (focus pinion gear, motor worm gear, and spur gear)

Nine years later the focus pinion gear broke again. This time I discovered the part was available from a third party that has taken the initiative to have the gears injection molded using modern plastics that should last longer than the original Kodak parts. Fingers crossed.

What was your source for these parts? Also, before I retired from the National Gallery of Canada, our AV people used to have slide projectos serviced by Doug Banks, link here: https://photographicrepairs.com/replacement-parts/kodak-projector-parts/

 

[runswithsizzers]

What was your source for these parts? Also, before I retired from the National Gallery of Canada, our AV people used to have slide projectos serviced by Doug Banks, link here: https://photographicrepairs.com/replacement-parts/kodak-projector-parts/

I bought the parts I used from eBay seller "atomk" Tom Kelly / A.T. Kelly
https://www.ebay.com/sch/atomk/m.html?_dkr=1&iconV2Request=true&_ssn=atomk&_oac=1
At that time (2019) his email was: atkelly@snet.net

There is another seller who has a good selection of Kodak Carousel parts - Micro-tools - https://www.micro-tools.com/collections/best-selling-products/products/kodak-kit - but I have never done business with them. Also, Microtools says their parts are "OEM Kodak", so their gears may not be made more recently from modern plastics like the ones from A.T. Kelly?

Installing the parts may be a bit of a struggle for some, but I believe both sellers may also repair/service some models of Kodak slide projectors.

 

[MattKing]

I guess the vignetting is not that bad. I borrowed a good number of 2x2 slides from the library and they projected fine with my Ektagraphic III. I tried to scan them it's when my 35mm slide scanner won't scan the whole frame. So I have to use the digital camera instead.

It wouldn't surprise me if an Ektagraphic III were designed to evenly illuminate a super slide. The Ektagraphic projectors were designed for commercial, institutional and educational use - a more demanding and varied environment than the Carousel projectors were designed for.

 

[Sirius Glass]

As I said above:



You CAN project superslides in any 35mm projector.



BUT:

The illumination in a 35mm projector is typically optimized for a 42mm window. Thus for the 57mm of the superslide the illumination must be adapted.
This is explicetely described at the manuals of Carousel models.

Of course manufacturers have also chosen to leave it at the 35mm format, or to design the projector from the start for the superslide format, which then reduces the illumination of the 35mm slide.


That you do not see such issue mentioned at your model of projector does not mean that the issue does not exist... optics are universal...

Kodak Carousel projectors were designed to project super slides without vignetting.

 

[AgX]

It wouldn't surprise me if an Ektagraphic III were designed to evenly illuminate a super slide. The Ektagraphic projectors were designed for commercial, institutional and educational use - a more demanding and varied environment than the Carousel projectors were designed for.

But, at least over here, superslides were a thing that even vanished in the good days. And thus respective hints at manuals

 

[AgX]

Kodak Carousel projectors were designed to project super slides without vignetting.

You did not read the respective Carousel manuals.

 

[xkaes]

I just received a PRO-TAMRON 38mm f2.5 projection lens in mint condition in the box for 99 cents -- plus shipping.

It looks like it has a 2.25" (55-60mm) "flange" focal length -- distance from the rear of the lens to the film/sensor.

It should make a great slight, wide-angle for scenics, etc. when I adapt it to 35mm/digital.

It's large and heavy, but I'm expecting great results. Even though it is a static f2.5, the wide-angle perspective should give it a good/interesting DOF.

We'll see. The only challenge is creating a thin, variable extension.