Film box end holder/reminder needed

benjiboy · Jan 2, 2015

Craig Swensson said:
find an dead SLR, pull one off that back, glue to camera or even better glue to self adhesive vinyl then stick this on the back. This is what i have done on my autocord, works for me.
regards
CW

A 120 film box end is only about half the size of a 135 one.

darcher121 · Jan 7, 2015

Thanks for the welcome and kind comments (and MattKing!!). I'll get some photos up soon.
Really enjoying reading these forums.
David

Sirius Glass · Jan 7, 2015

Some Hasselblad backs have them. Sell your Mamiya cameras and buy a Hasselblad. Problem solved.

benjiboy · Jan 8, 2015

It would be a very simple job to fabricate one out of plastic card that's available from model shops in various thickness, or you could modify a 35mm plastic glassless slide mount with the card to accommodate the size of a 120 film box end

Xmas · Jan 8, 2015

AgX said:
I did not even know that there is something as a hot-shoe cover. (It makes less sense than those covers for an additional PC-socket. Well, maybe with modern, sealed cameras in sandy environment.)

I only knoe about those eye-piece covers (for long time exposures) that can be stored in the hot-shoe.

Some flash guns put a lotta volts on the synch cable and the hot shoe might ' shock '- tough on cameras with semi conductors...

M Carter · Jan 8, 2015

I'm with the blue tape and sharpie idea... I shoot stills and video commercially, so all my bags have those items already, I use 'em a lot for personal film shooting.

I use blue tape for battery packs and memory cards too - if the terminals are covered with blue tape or the case is closed, it's unused - no tape and it's been used. Works fine for me on hectic set days. I go through some rechargeable AAs, but I have those plastic 4-pack cases which get the tape as well. I tend to fold an end into a "tab" when I use it to pull it off easily. Sometimes stick a little square sticky-to-sticky side for battery packs, so the sticky doesn't get on the terminals. I've found even on 105° Texas days the tape doesn't leave residue though.

Maybe for another thread, but... camera bag-must haves: blue tape, sharpie, pencil, reading glasses (hands-free magnifiers for cheap), LED flashlights. And I always have a small tool pouch.

AgX · Jan 9, 2015

Xmas said:
Some flash guns put a lotta volts on the synch cable and the hot shoe might ' shock '- tough on cameras with semi conductors...

I know, but then such cover would make no sense at all, as one would not only be unable to mount that harmful flash but no other device for triggering.

Xmas · Jan 9, 2015

AgX said:
I know, but then such cover would make no sense at all, as one would not only be unable to mount that harmful flash but no other device for triggering.

If you have a gun mounted on a flash grip secured with tripod screw to base plate and synced with cable to PC socket, the hot shoe is a hazard for people with pacemakers, or some normal people, it depends on the camera and the gun...

OM1n and OM4(Ti) were sold with hot shoe covers, I did not assume it was a dust cover...

Steve Smith · Jan 9, 2015

Xmas said:
Some flash guns put a lotta volts on the synch cable and the hot shoe might ' shock '- tough on cameras with semi conductors...

Whilst it's a high voltage, there isn't much energy available from the hot shoe/sync as it is just the charge in a tiny capacitor used to energise the trigger transformer. The energy from the main capacitor to the flash tube doesn't get anywhere near the sync connections.

And those cameras with semiconductors usually use a type which can handle 400v.

Steve.

AgX · Jan 9, 2015

And those cameras with semiconductors usually use a type which can handle 400v.

There are long listings of camera models not being apt for 400V. (The manufacturers though may have given erroneous warnings.).

If I remember right the standard for trigger switches at cameras is set at 24V meanwhile.

Steve Smith · Jan 11, 2015

AgX said:
There are long listings of camera models not being apt for 400V. (The manufacturers though may have given erroneous warnings.).

If I remember right the standard for trigger switches at cameras is set at 24V meanwhile.

Most of those strange new electric cameras are rated at 250v. I have never taken one apart to see what they use but my cheap Cactus radio triggers use an opto triac in the trigger circuit which is rated at 400v (you can't buy one with a lower rating). I suspect that most cameras use the same or a similar component and the manufacturers downrate it to give a big margin of error.

There is a lot of internet chatter, usually regarding Canon, about a 6v maximum. I think this is mainly paranoia and stems from the possibility of damage caused by sliding a charged flash into the hot shoe and having the centre pin momentarily touch one of the other contacts on the way in and causing damage.

Also, any talk about the sync connector being o.k. at high voltage but the hot shoe not so can be ignored to for the same reason.

Steve.

AgX · Jan 11, 2015

Steve Smith said:
There is a lot of internet chatter, usually regarding Canon, about a 6v maximum. I think this is mainly paranoia and stems from the possibility of damage caused by sliding a charged flash into the hot shoe and having the centre pin momentarily touch one of the other contacts on the way in and causing damage.

I don't get your point.
Whether the harm is done by "overcharging" the release circuit or by harming the accessory circuits is only of academic interest.
Actually, looking at the flashes and cameras I got I do not see a chance for the latter contacting to happen.

Canon explicitely warns in the handbook for high trigger voltages of non-proprietary flashes that could harm the T-90.

Steve Smith · Jan 11, 2015

AgX said:
Whether the harm is done by "overcharging" the release circuit or by harming the accessory circuits is only of academic interest.
Actually, looking at the flashes and cameras I got I do not see a chance for the latter contacting to happen.

I can't see it happening either as there is too much distance. However, it is the only reason I can think of for some of the suggestions that pc sync can handle high voltage but hot shoe cannot. They will most likely be connected together internally.

EDIT: I have just looked at the T-90 manual. It does warn about the possibility of damage if non Canon flashes with more than two connecting pins are used but doesn't state a voltage.

It also says that large studio type flashes can be used with the hot shoe to pc sync adaptor. At that time, studio flashes would have had a high voltage trigger circuit.

Steve.

Shootar401 · Jan 14, 2015

white gaffers tape and a sharpie. No need for the gimmiky holders.

Meyer Trioplan · Jan 23, 2015

I simply often just tape the seal that comes with the film to the camera itself, along with a very handy note page on which I record my exposures.

(Feel free to download the note pages from this blog page: http://quirkyguywithacamera.blogspot.com/2015/01/exposure-film-notes-on-go.html)

Film box end holder/reminder needed

Attachments

Privacy & Transparency

Privacy & Transparency