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Canon XH A1 Fokusproblem - Pulsierendes Bild

Canon XH A1 Focus problem - Pulsating Picture



Frage von DReffects:
Juli 2007

Hi folks,

had since yesterday, the Canon XH A1 because of the extremely positive tests brought here. But the focus ... omg what is the? Constantly pulsating out he and her - not even in still life is restless - always goes to and from.

Has anyone of you a similar problem and maybe a solution?

Thanks & Regards,
Daniel



Antwort von Jan69:

films you in the dark?
then manual focus ...
or do you have this problem:
http://forum.slashcam.de/xh-a1-scharfe-probleme--vt51173.html?sid=2f78c56f64aaa8a5a55c15758bd9c1d2
gruß cj



Antwort von Aljoscha.Niko:

Or it's dreck on the objective or small cattle, or so ...








Antwort von DReffects:

"Aljoscha.Niko" wrote:
Or it's dreck on the objective or small cattle, or so ...


: D ne, no viechzeuch ^ ^ the camera is freshly unpacked ... lighting is quite normal. hab grad mal uploaded a video where you see the whole.

and woe betide a blaspheme my look * grins *

http://www.dreffects.de/tmp/fokusproblem01.wmv

manual focus is no option for me since I often refer to events interviews movies where I do the interview ...



Antwort von Jan69:

then take ne lamp with ...
without light swims in all the AF (HDV-) cams.
gruß cj



Antwort von DReffects:

"Anonymous" wrote:
then take ne lamp with ...
without light swims in all the AF (HDV-) cams.
gruß cj
hm ok so this is normal? hab grad Same with my other two cameras probiert (299 ne cheap and ne-dv HC1E) - both correctly. Apart from this: was illuminated.



Antwort von Axel:

"DReffects" wrote:
hm ok so this is normal? hab grad Same with my other two cameras probiert (299 ne cheap and ne-dv HC1E) - both correctly. Apart from this: was illuminated.


Much is said
Lens s.das at long focal lengths in automatic mode * useless since, as Canon (see above linked thread) itself acknowledges, the focus at long focal lengths "calculated" is probably from a shift of the lens and the chip, which is synonymous strange swimming explains.
* (Especially at close range, it looks as you sit in front of the Camera)
b) the camera in the worry-mode (no manual intervention is possible), in automatic mode (as before, local manual intervention is possible) and in Tv mode (automatic aperture) gain unnecessary use, although the shutter speed is 1/125tel. The noise can be seen in thy synonymous apparently well-lit film.
c) the strength of light is only good through a moderate film grain and Gainrauschen similar, but not by the optics. Gain looks good in real Lowkey (meaning the lighting style, not just poor lighting), but not if it is an automatic Durchgeknallte in brightly lit shots really pumped, as in the Beispielclip, although a longer exposure time would have been better.

No, the effect is not normal and so not acceptable. Before you panic and you think the camera was broken, enter the above weaknesses bill:

Limited at the telephoto autofocus range (up to about half should be no problems, also is unreliable, at least with sharpness and pumps can be expected). In manual focus, you can zoom in fully, but use Peaking.

Program for semiautomatic modes and "M" to gain defaults to -3, 0 and 6dB.

Try the normal and the AF Instant AF (the latter reacts faster) in the above recording situation. The Instant AF sits, like a sports finder, next to the lens, so not exactly in the axis. From a short distance probably inevitably leads to erroneous> parallax.

If you're even in the picture (and it seems the camera operated None), select the TV mode, adjust the exposure time to 1/50tel and let the camera do.

And other hand, everything is doable. The fact that the camera car is no good pictures, it was often noted.

Post the results, so we all can benefit.
PS: Find s.deinem exterior nothing wrong.



Antwort von DReffects:

"Axel" wrote:
PS: Find s.deinem exterior nothing wrong.
EXCELLENT ^ ^

thanks for the detailed instructions. The image was captured in daylight lamps plus rooms from about 1-1.5 meters distance made was something reingezoomt. have the presets of fxsupport.de in use and hope that tomorrow in the daylight a bit to test what the focus to driving.

Personally, I like movies with his 100th, a pity that the TV mode between 50 and 120 jumps: (

Had the camera in the vid just the Auto-mode Weil should go quickly - this was yesterday at the slow pulsing of wegzomen my mess on the desk noticed (taghell) and have tried to reproduce the effect ... hope times the camera is reflected better in the 'real' use. I film quite often to events where logically * no * extra lighting is available, as should the AF already drawn. Even went with the cheap HC1E pretty good;)

I post my experiences:)



Antwort von Axel:

"DReffects" wrote:
Personally, I like movies with his 100th, a pity that the TV mode between 50 and 120 jumps: (


Denk-& drafting error on my part: In the pure automatic mode, the camera tends to gain only, before the prolonged exposure time (in Tv mode so you can freely choose the shutter). But it is better in low light with 1/50tel generally, if the gain is avoided. In "25F", this time closing generally very good results, why they are here no longer needs to change. Yes, I know the Manual states: Longer exposure times decrease the image quality. But this is very sweeping said. It is true s.ehesten for 1/25tel and for photo snapshots.

Your insecurity that I understand: I first saw pictures of a colleague who is studying at the Camera with a 16mm film camera had already practiced a lot. His first pictures with its new A1 let me smooth the jaw fall down. I now have my last three weeks, before many years DV, and my shots disappointed me. Only when you manual work and experience doing so, Holst everything you get from the pictures, just like with a film camera.



Antwort von kitanai:

means that you mostly with manual focus aufnimmst?
But in the fast movements, as in jan rittertunier
with the FX7 has (clip can be found at Slashcam download)
despite peaking does not work, because hardly go without AF with a
HDV cam.
gruß cj

ps. shall focus only on the pump zoomed close / telepark area with AF (IAF)
synonymous, or zoom in the landscape / city



Antwort von ruessel:

I find the autofocus on my XH A1 is not bad (better than some other HDV Cam), this should be something runtergedreht in the camera menu. Sharpness tremor is there really only at diagonal edges (normal) or with very little light.



Antwort von neros:

between short wonder, does xha1 much more light than the XL2?








Antwort von Axel:

"cj" wrote:
means that you mostly with manual focus aufnimmst?
But in the fast movements, as in jan rittertunier
with the FX7 has (clip can be found at Slashcam download)
despite peaking does not work, because hardly go without AF with a
HDV cam.

It means, not the zoom fully extended. Pretending as if you had only a 10-fold zoom. Basically nothing more than some DV cameras, where you must be careful not to accidentally use digital zoom.
"cj" wrote:
ps. shall focus only on the pump zoomed close / telepark area with AF (IAF) for synonymous or Zoom in the landscape / city

That would be tested. If the focus does not change, ( "Infinity"), it should not synonymous sharpness pump type. But to me it is not geheuer because you have the display not discover these errors, first at home at higher / full resolution. As you yourself wrote that runs in front of a tractor through the Picture ...
"trunk" wrote:
I find the autofocus on my XH A1 is not bad (better than some other HDV Cam), this should be something runtergedreht in the camera menu.
It could be synonymous help to reduce the response time. Wolfgang is probably as a cameraman of all the dogs rushed, I must be the only trial & error with out laboriously.



Antwort von ruessel:

Quote:
Wolfgang is probably as a cameraman of all the dogs rushed, I must be the only trial & error with out laboriously.


I had but synonymous .... If I have a new camera, do I connect them via HDMI or component s.einen big FullHD s.and filme out the window. So not only do I have some (Picture) error on the twisted tape search goes so much faster ....

My car is Focus of me was a step slower, have been, until now I can not have a bad AutoFocus complain. Surely is sometimes the sharpness level is not where I want to have but that happens with other HDV models as well.



Antwort von DReffects:

thanks for the note. One last question before I set out do: where do I adjust the speed of the AF down? the option 'Focus Speed' in the menu is only for this position or preset?

:)



Antwort von ruessel:

I should only look in the manual, but "Focus Speed" but sounds good. The need in the global variable set to the normal user should preset to have no influence. The focus of difference is not huge anyway, so no "Stone of the Wise Men."

Pulsation, the Focus is not only clearly defined levels of sharpness, ie if, for example, a railing of the front to back runs, where there should be sharp ... .. 1m after 2m ... or 7m? It examines the Auto Focus is always up to the front of the rear Bildindformationen further, I find that completely normal. Then so automatic "off" and hand control of ....



Antwort von DReffects:

"trunk" wrote:
I should only look in the manual, but "Focus Speed" but sounds good. The need in the global variable set to the normal user should preset to have no influence. The focus of difference is not huge anyway, so no "Stone of the Wise Men."
Hab grad read - the focus on Speed Camera Setup menu applies only to the rapid changing of focus in Focus preset where you between two positions auto focus can switch.

An adjustment of the AF focus speed, I have not found. Only one option to the sensitivity of the front Zoomrades to regulate.

Hab grad of the material viewed this afternoon - looks ok to light up pixels with fast pans on succulent grass. But that is probably s.der limitation of the MPEG codecs;)

Will tomorrow be a few test shots under studio conditions and make reports:)



Antwort von DReffects:

come now to cope quite well:) thank you again for your tips!




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