Infoseite // XH A1 25f



Frage von Film_matze:


Hello,
I voted with the XH A1 in 25f mode rotated, after the takeover in Final Cut / iMovie, I have 25 frames per second, but each picture twice, so different only 12.5 frames per second. Someone knows where the fault lies there?
Greeting
Matze

Space


Antwort von beiti:

Perhaps with 1 / 12 seconds exposure time rotated?

Space


Antwort von Jitter:

Presumably you've filmed in daylight and the automatic transmission, the exposure time to 1 / 50 second set. You need the manual exposure time to 1 / 25 seconds fix, then you'll get only in 25p mode synonymous 25 frames. For 1 / 50 in combination with 25p each Picture logically must be doubled.

Space


Antwort von Axel:

"Jitter" wrote: Presumably you've filmed in daylight and the automatic transmission, the exposure time to 1 / 50 second set. You need the manual exposure time to 1 / 25 seconds fix, then you'll get only in 25p mode synonymous 25 frames. For 1 / 50 in combination with 25p each Picture logically must be doubled.

You get synonymous with 1/50tel 25 frames. Beiti is right.

About the theory that at 25 fps, the exposure time should be 1/25tel, opinions differ. I believe according to their own tests (pedestrian precinct, with road pans) 1/50tel for the best exposure time with the most natural feeling movement. It corresponds to coincidence of the 180 ° sector aperture, the aperture of a standard film camera (and: Yes, I know the A1 phase, no transport needed!).

I ask this simple test itself, not one or the other simply "trust" to be, but rather itself to decide.

It is true however, that 1/25tel still completely in order for a Lowlight situation is. Fast movements are already visible but blurred.

And everything about 1/50tel is always clearer with Jerkiness punished, thus: Manual Shutter!

Space


Antwort von tommyb:

"Jitter" wrote: For 1 / 50 in combination with 25p each Picture logically must be doubled.
I'm afraid this is not the problem.

@ Film_matze
Do you have your project as a progressive? 25i and not 25p.

Space


Antwort von Schlafsack:

Matze, did you perhaps made a mistake and the half viewed? Because you always had two identical fields per fullscreen. Could well be ...

Space


Antwort von Axel:

"Sleeping" wrote: Matze, did you perhaps made a mistake and the half viewed? Because you always had two identical fields per fullscreen. Could well be ...
The editing programs do not show all fields. or rather, you specify both fields on each other, so synonymous with 25i only 25 different images. For a doubling of the pictures is how Beiti writes at 12 fps, with those night shots in the rain (no gain) incidentally looks very interesting: The rain seems to have multiplied, the s.Boden incident drops seem nachzufedern. But the movements are extremely smeared.
In the first scene of Gladiator With half-exposure time (shutter 1/96tel accordingly, may in fact even shorter), provides very little motion blur (approx. 2 `39` to 3 `59"): sharp movements are unnatural and choppy, you can see how individual Erdklumpen frozen in the air . The slow motion, one could very well do with 25i, you should halve the Shutterzeit again. With double exposure time (shutter 1/24tel, perhaps longer, to video actually rather 1/12tel equivalent) smear the movements (S.4'00 '), the music is of da s.elegisch. On a DVD to see more clearly than here.

Space


Antwort von Film_matze:

Thanks for your answers.
It is unfortunately not s.meinen project settings that I could indeed change. Unfortunately I have actually only 12 images on the tape. Evil case: If I change the frame rate in manual mode to make 50i, the shutter at 1 / 50, do I set the frame rate to 25f, it is he is 1 / 12, which I had overlooked, is perhaps together with a preset that I have loaded? Do I need to check.
Did someone perhaps maybe an idea how I can save?
Greeting
Matze

Space


Antwort von tommyb:

Ui. That is really bad.

No, because unfortunately you can not save (except interpolated frames as in a standard conversion).

Space



Space


Antwort von Axel:

You can not save presets and have nothing with the shutter to be done. Hope it was not "irreversible".
For the future: fully automatic (green) never, and just 1/25tel at 25f or 1/50tel, depending on what your tests showed. Means: Manual mode "M", where everything you need to check. Aperture or automatic (with Auto-Gain "off"), synonymous with the shutter you can fix.

Apart of "proboscis" famous, there are presets with True Color
Space


Antwort von Film_matze:

Once again thank you.
I'm trying to be interpolated images, if this does not go, I must re-turn.

I understand but does not:
m = manual settings, I go to menu, setup signal constitutes the frame rate of 50i, then the shutter is at 1 / 50
I present to 25f, he stands at 1 / 12
Is it synonymous with you?

Space


Antwort von Axel:

"Film_matze" wrote: Is it synonymous with you?
Maybe, but manual does just that I have all the values and self-control must manipulate. 25f When is the right shutter of the most important parameter.

Space


Antwort von tommyb:

The Camera has perhaps 1 / 12 as noticed with the last time it was rotated (whether intentionally or not).

Turning back to the shutter 1 / 25 or 1 / 50, then switch between Auto and Manual to watch and then whether it is back to 1 / 12 represents.

Space


Antwort von Film_matze:

Yes, it is, it remembers the settings, oh man!
Merci

Space


Antwort von Fenek:

Thanks for the tips!

Space





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