tatge@hpfcms.UUCP (tatge) (11/30/84)
I'm new to 35mm (I've done a lot of Super 8) and I just bought a
Pentax Super Program.
Surprise!!! I can't figure out how to take multiple exposures with the
thing. Considering it will do everything but butter my toast in the
morning, I can't figure this out.
Anybody have any helpful hints?
George Tatge
Fort Collins, CO
hplabs!hpfcla!tatgebees@drutx.UUCP (DavisRB) (12/05/84)
If your 35mm SLR doesn't have a builtin way to do multiple exposure,
try the following:
Everyone has a little button on the bottom of the camera under the
winder to release the film for rewinding, right? (At least most do.)
If you hold the button down while thumb winding the film, the camera
will reset for another shot, but the film will not advance (you hope).
What I mean is it MAY not advance. It may, however, move slightly
either way, so this trick is not always successful.
Try it. The results will probably depend on your camera.
Ray Davis
AT&T Information Systems Laboratories, Denver
{ihnp4, houxe, stcvax!ihnp4}!drutx!bees, (303)538-3991haapanen@watdcsu.UUCP (Tom Haapanen [DCS]) (12/05/84)
The rewind button trick works all right on the Canon AE-1, too. But does anobody know how to do this on a camera with a built-in winder/rewinder. Namely, I'd like to know if anybody has figured this out for the new Canon T-70. \tom haapanen watmath!watdcsu!haapanen
rsg@cbscc.UUCP (Bob Garmise) (12/05/84)
I agree, except I've always been told to: 1) backwind the film until it's tightly wound, then... 2) press/flip the release button/knob 3) thumb wind the film as if you were advancing to a new frame 4) un-press/un-flip (are those words?) the release button/knob 5) take the second picture Now for my question...let's say you're taking a picture of a lake and it's a sunny day. On top of that you wish to multiply expose a car to make it look like the car is hovering over the lake. For the sake of argument let's also say the proper settings for each individual picture would be: 1) Lake: f8 at 1/250 sec 2) Car: f4 at 1/60 sec To make a multiple exposure, what settings do I use? ...bob garmise...at&t bell labs, columbus...
bll@drutx.UUCP (LewisBL) (12/05/84)
Re: Multiple Exposures with Pentax cameras I agree with Ray Davis in his suggestion on how to make multiple exposures (pressing the rewind button on the bottom of the camera body to cock the shutter without advancing the film). In fact, on the Pentax ME Super camera (!= Program), this is the only way (according to the Owner's Manual). Be careful, though, to press the rewind button only once, and then release it before operating the film advance lever. This will insure that the rewind button resets itself when the film advance lever is operated. Holding the rewind button *while* cocking the advance lever may not allow the rewind button to reset, and you might not advance the film on the next operation of the film advance, resulting in a triple exposure where you only wanted double exposure. Ben Lewis, AT&T Consumer Products, Denver "You can't keep the birds from flying over your head, but you CAN keep them from making nests in your hair."
gino@voder.UUCP (Gino Bloch) (12/08/84)
[expose this line to the bug]
> To make a multiple exposure, what settings do I use?
The general rule is to use 1/n the exposure for each shot of an n-fold exposure.
If n is 2, that means close the lens 1 stop, or double the shutter speed, or
double the ASA/ISO setting. For programmed automation, the only alternatives
are the film-speed change and the exposure compensation knob (set that toward
UNDEREXPOSURE). Remember that `n' is linear and `stops' are logarithmic.
Remember to return everything to normal when finished.
Sometimes you may want to break the above rules for esthetic reasons.
--
Gene E. Bloch (...!nsc!voder!gino)
Mr Humilityjans@mako.UUCP (Jan Steinman) (12/10/84)
In article <4257@cbscc.UUCP> rsg@cbscc.UUCP (Bob Garmise) writes: > 1) backwind the film until it's tightly wound, then... > 2) press/flip the release button/knob > 3) thumb wind the film as if you were advancing to a new frame... A cleaner solution exists for some cameras, notably Olympus OM1, OM2 and some Cannons. Many cameras have a ratchet mechanism for the rewind button which causes it to pop up after re-winding a bit. This keeps you from leaving the camera in rewind mode after loading a new roll. (If your camera instructions tell you something like "hold in the rewind button while turning the crank", you probably have such a mechanism. Follow steps 1) and 2), above, then rewind the film a tiny bit and release the rewind button. Continue rewinding until the rewind button pops up -- the film should not rewind further if there is such a ratchet mechanism. The mechanism is usually keyed to fractions of a frame (I think the Olympii take four rewind-button-pop-up cycles per frame, but it's so easy to find out, I haven't memorized it.) To find out how many times to repeat the procedure in order to rewind exactly one frame, follow step 1), above, note carefully where the rewind knob/crank is positioned (a grease pencil is great for this), shoot the first exposure and wind the film slowly, noting how far the rewind knob/ crank has moved, and perform enough of the push-rewind-button-rewind-tiny-bit- release-rewind-button-rewind procedures to get the rewind crank/knob back to it's original position. It sounds complicated, is difficult to describe, and is somewhat more awkward than the simpler method cited, but it results in much greater accuracy and removes the requirement to waste a frame on either side of the multi-exposure shot. If step 1) is performed prior to the FIRST shot, pin-registration accuracy can be achieved. (Auto-processing equipment also tend to get confused by the first method if registration is off slightly. Before discovering the method presented, I got back a roll of slides with every frame after the multi cut neatly in half, due to sloppy the registration of the first method!) As far as I know, this method has not been presented in instruction manuals or magazines, although it works with every camera I've tried it with. >Now for my question...let's say you're taking a picture of a lake and it's a >sunny day. On top of that you wish to multiply expose a car to make it look >like the car is hovering over the lake. For the sake of argument let's also >say the proper settings for each individual picture would be: > 1) Lake: f8 at 1/250 sec > 2) Car: f4 at 1/60 sec >To make a multiple exposure, what settings do I use? The key is to think in terms of exposure value. Each single f-stop change doubles or halves the amount of light reaching the focal plane. Reduce each exposure by one stop for a double exposure, two stops for a quad, etc: Lake: f11 @ 1/250 OR f8 @ 1/500 Car: f5.6 @ 1/60 OR f4 @ 1/120 This rule of thumb is sometimes tempered by reciprocity -- if in doubt, bracket using 2/3 stop and 1 1/3 stop decrease per exposure. -- :::::: Jan Steinman Box 1000, MS 61-161 (w)503/685-2843 :::::: :::::: tektronix!tekecs!jans Wilsonville, OR 97070 (h)503/657-7703 ::::::
gino@voder.UUCP (Gino Bloch) (12/11/84)
> The rewind button trick works all right on the Canon AE-1, too. But > does anobody know how to do this on a camera with a built-in > winder/rewinder. Namely, I'd like to know if anybody has figured this > out for the new Canon T-70. I've played with it. If you hold the rewind button JUST SO (not far enough to latch, but far enough to declutch), it seems to work. I'd say that it's very dicey, however. Is there a possibility of control from the remote socket or an accessory back, do you think? -- Gene E. Bloch (...!nsc!voder!gino) Mr Humility