50 exp TMX minox loads?

Since TP is gone I've got to try out some TMX in my IIIs. Can you load 50 exp

lengths of TMX in a Minox cassette? (You could with TP, not with some others).

 

Thanks! I don't want to jam up my camera out in the field.

Hi Mark,<br />Take a look at Goathill's website[1]. Maybe you will find an answer there.<br />[1]http://www.subclub.org/sponsors/goathil5.htm

Remember folks, its all about film thickness. If you have a mircometer handy and can measure the thickness between TP and TMX, you will have your answer. Hope it works out for you! I myself have never shot a 50 exposure roll.

found some old TP and measured the thickness as

0.275mm, measured TMX and it was 0.31mm. With TP you

can get ~54 exposures max. so with TMX you can

probably get roughly 54*(.275/.31)=47.9... my guess is

that 45 exposures would be a safe starting number.

And also remember the transportation isn't linear. After each advance the diameter of the roll on the take up spool grows. The larger the diameter the less the rotation needed. I don't know the details but I guess a larger thickness will result in a larger distance between the photo's.

yup, that's why I had hoped someone actually knew. If I can find some expired TMX I'll slit some and try it out.

I think we have to ask Don Goldberg about this detail.

TMX is about the thickness of Kodak PanF +<P>

 

See thread for maximum load of plasitc and brass cassettes<P>

<a href="http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=003HBM">Table: Maximum load of Minox cassettes</a>

From Kodak http://www.kodak.com/global/en/professional/support/techPubs/f32/f32f.jhtml

 

TMX thickness = 5 mil

 

Hence maximu load in Minox plastic cassette = 58 frames for plastic cassette, 75 frames for brass cassette.

Thanks!

 

Measuring PanF at 0.30mm and Tmax100 0.31mm maybe it'll work! I'll give it a shot next time!

 

Part of why I want to do it is for sending to Blue Moon photo. They charge $6.50 developing per roll, so 2 24 exp rolls will cost way more than 1 50 exp roll for the same number of prints.

 

PS I saw the 5mil number, but am sure that is only the base, the emulsion adds thickness, right?

Martin,<br />

Looking at your table, why should one go beyond 50 frames? Most counters stop at 50 so what happens after that?

Robert, in some occasion it would be nice to have as much load as possible, (for instance on a trip), particularly in the age of digital

where hundreds of picture can be store on one SD card before card change.<P>

 

Over 50, the counter keeps rotate pass 50 then back to 0,1,2..;

 

In my Edixa 16M, the standard load is 20 exposure, over that the

camera's film advance counter freeze up. I have to disable the counter

mechanism in order to load 70 frame of Copex rapid; I don't look at

the counter, just shot until the end of film until the film advance

lever encounter resistance indicating end of film.<P>

 

For Minox camera, it will not freeze up pass 50. For long loads

one has to make a node at the end of film strip such that at end of

film one can feel resistance when advance film.<P>

Mark, you are probably right about the thickness. I don't have any TMX at hand. <P>

 

It does make great economic sense to develop long loads of film one shot. <P>

Your 50+ years Minox could break trying to pull 50exp. roll! If your running it tight to the max thickness, you will jam before you get to 50 or 43 for that matter! Caution!!!

I almost hate to ask this, but why would you want so many frames on a roll. I found myself cursing even the 36 frame rolls because it would take so long to finish that the early pictures were often ruined (presumably by body heat while in my pocket more than a year).<div></div>

well, since I'm slitting my own film, it is cheap, so if I develop a partially exposed 50 exposure roll it is no big loss, but if I use it, great.

running actual film in my camera I jam full at exp 47.

 

took a couple weeks to shoot the roll.

I have no problem in loading /shooting 50 load.<P>

 

I think the key points for load load are:<P>

 

1) Make sure to use the thin takeup spool, not the thick spool<P>

2) For long load, the edge of the cut film must be ruler straight, not wobbling. A high quality slitter such as the Minox slitter guarantee

straight edges<P>

3)Careful in taping the film to the takeup spool, any slack in taping

will increase the effective diameter of the spool and cause jamming.<P>

Bill wrote:" why would you want so many frames on a roll. ?".<P>

 

I like long long loads, particular when travelling abroad, I usually

shoot 2-3 rolls a day. Longer loads means less frequent film unloading- film loading, 50 loads seems too short. <P> I usually use 4-5 cameras at a time. (For 35 cameras I use the longest load available to me, that

is 36 exp and avoid 24 exp film.)<P>

 

 

One nice thing about digital camera: several hundred shots without

changing SD card.