That's it: my Em1.2 is gone before I destroy it.

Started 8 months ago | Discussions thread
Tommi K1 Senior Member • Posts: 5,975
Re: This was shot with it on EPL5

Jorginho wrote:

This is how I used it. By pressing the shutterrelease, looking at the 0,5 s refreshes on the screen and stop when either a bolt is captured or you are overexposing the image. Two presses.

If it is not the way it works I must have been very lucky with these shots...

You are using Live Time then.

Live Time is like a long exposure but you get X count of preview updates with given ISO value and your chosen time between updates. You need release shutter once for starting and once to stop the exposure. You are the one who is evaluating when to stop the exposure based your preview on screen. You get single file that is otherwise normal long exposure shot, but just with preview.

Live Bulb is like Live Time, but you need to press and hold the shutter release, once you release the release then exposure stops.

Live Composite is neither one. First shutter release does the measurement of the scene, second release starts the exposure, third shutter release stops the exposure. But you are not exposing between those continually as normally but instead you set the exposure time based your chosen ISO and F-value and then you get updates on screen from the exposure time counter. The difference is that nothing that is not brighter doesn't get added to the first frame. Only a new light gets added to the first frame.

You can leave the camera exposing over the hour and if there doesn't come anything brighter to the frame, you get to keep your first frame as you set the exposure.

Only when the new light is captured, it gets added to the frame. New light like the flash strike. Then it just keep exposing in periodical updates to infinity and adds only the new light again. So you can do a single exposure of like 2 hours in the time when you get example 5 flash strikes, and you will end up to single frame (single file) where you have all five flash strikes captured and you are not overexposing anything. The system doesn't allow new light to clip but it stops adding that exposure to frame. So what you in worst case would have is to have multiple flash strikes that happens in different time but for same location, appear like all of them happened at the same time on same place.

You do not get multiple frames/files with Live Composite. You do not overexpose the scene by longer time.

The LIve Composite function is made for light painting, flash photography etc where you do want to have long working periods but single file with a single short exposure time.

Example if you want to do a architecture photo of the house in evening light you can do it this way with Live Composite. FIrst you wait that sunset comes around and you set the exposure that matches it and you take the shot outdoors with Live Composite going. Then you can walk in the house with the speed light and set the power for the exposure you have in the camera. You start flashing your speedlight indoors in every room thats window is visible to camera. And then you walk back to your camera and stop the exposure like 10min later. You get perfect exposures for indoor rooms through windows and to the building. You can even stop middle of the process to make a phone call without worrying overexposure as only a new light is added to the frame.

No more long exposures in sequence shooting and hoping that flash strikes so you can stop exposure. Take multiple shots and combine on computer.

No more flash triggers that detect the flash strike and release the shutter.

With Live Composite you set your exposure, set the camera rolling and just wait the multiple flash strikes to happen for your wanted composition and then stop process when you think you have enough flashes on frame. You are not in horry! No triggers required!

Look like what did with Live Composite:

That is a single exposure (single file) from long period of time where the storm passes over sea, hitting multiple flashes in across the horizon. Stars appear on the sky and you can see the star trails comes there as they move on the night sky creating new light sources.

Now think about yourself being in that situation. All that you do is put the camera on the tripod, check your exposure for example 2-4 second exposure time and F-ratio with the ISO to match that. Now you enable the Live Composite and you press shutter once and camera does exposure and samples the frame. Then you press second time to start the exposure, camera takes first exposure and after that it starts rolling, updating the preview in the time of your exposure time. You wait there looking how lighting strikes at different places and you see just the lightings getting added to frame, beach, sky etc all stays as in the sample frame. When you think you have enough lighting strikes going on the frame, you stop the exposure by pressing shutter release button third time.

Now you have a single file (JPEG+raw or either one as you chose to).

No need for any trigger, no need to try to catch the lighting strike, no worrying about over exposing the frame etc.

You just watch the light show to happen and see how each lighting strike gets added to one and same frame.

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