Infoseite // Depth of field at Camcoder

Frage von JulianW:


Hi Everyone,

I have three cameras: Twice the HDC-HS 300 and HS once the 700th Both have a "manual Aperture", on the ring adjustable.

Now I did about one and half years for the first time playing around with a digital SLR camera, which was a lot of fun: The Aperture provides the depth of field, on the other Page, the exposure time is, so I open the Aperture to the background blurred to and the object that I photograph to replace the background to make.

I thought at the Camera is the same. So the automatic out and started to play around s.der Aperture. But ... because nothing is readjusted. Say: If he ICHD open my Aperture, then the picture brighter. More and brighter. Exposed about. And ...?

But that's what I'm doing to solve one person in the video from the background. The depth rauszunehmen, the background slightly blurred and the person razor sharp to have the video. As for the running now with a camcorder?

Since I do not s.möglicher "through art" find, so what is the more incoming light of an open Aperture it were offset by the "exposure time", I am completely on the tube. Is the Aperture at the Camera because "only" the exposure? And if not ... can somehow correct the exposure automatically, while I can change the aperture? Is it clear what I mean? Aperture, for less depth of field, as the camera can now "countermeasures" that the depth of field is what I want, but the exposure is just synonymous correct?

Love, Julian!



Antwort von Tuffy:

Hi Julian,

primarily the Aperture is used to regulate the incoming light. With more "flare" is synonymous then more uncertainty into the picture.

The problem is what is present, a reflex that a much (!) Has larger memory chip, smaller than your camcorder. The size of the support surface for the depth of synonymous important - the bigger the media, the more blur.

There are automatics, which regulates the shutter function of the aperture - usually you can but both are fixed to one unit (that is both so beautiful could this probably is not synonymous make would be hesitant lighter / darker) and adjusts the sharpness level with the focus of the camera.

Greetings!



Antwort von B.DeKid:

to increase distance to the object, Aperture, ND filter, zoom fully in, voila un sharp object Scharf background.

(Gain off s.der Cam)

http://www.dofmaster.com/dofjs.html

A DoF Calculator can help to understand this.

MfG
B. DeKid



Antwort von JulianW:

Hi B. DeKid,

unfortunately, the HS 300 and HS 700 both have no ND filter.

So really I have understood it, although synonymous not (yet), but at least I think so far that deien method without ND filter does not work. ;-)

Love, Julian!



Antwort von Tuffy:

Hi Julian,

very naughty: check out times the operating principle of a camera on, then that is very clear.
Open Aperture = longer in the Picture is blurred. If the chip but small (as opposed to a DSLR of a camcorder is tiny), the general picture "more sharp", ie results as with the DSLR you will not create.
If you extend the Focal, you're gonna get more synonymous blur in the background.

The ND filter is really only meant that the picture is not eclipsed, if you open your Aperture (so that the shutter may remain constant).

Greetings!



Antwort von JulianW:

Hi Tuffy,

So, I shine "only" with superficial knowledge, but I will ask then but times more precisely:

"Open Aperture -> More in the Picture is blurred"

If the sentence is "strictly speaking", then that would have nothing to do with the Depth. The other way: If I have a two-dimensional object Photograph / movies, then the Aperture in my opinion only influence on the exposure, no longer the focus. Your statement that it would have been but still affect the sharpness. Hence the question: Is your statement really EXACTLY in what you say?

I have not now at the Camera for the ND filter in the instructions, but quite commonplace to Reviews of slashCAM. It says inside, none of my cameras have such a filter. Next Eich did not search.

So that brings me to the Focal: Can I change the Camera?

As always synonymous, at times to return to the principle: With the DSLR with a 50mm fixed focal length, I have a 1.8 and he-Aperture wonderful results. I expect, of course, not with my video camera, that's clear. But the Aperture in the video camera is ONLY there so that the exposure right? Somehow this is so "slightly ahead". ;-)

Love, Ju lian!



Antwort von beiti:

"JulianW" wrote: If I were a two-dimensional object Photograph / film, then the Aperture in my opinion only influence on the exposure, no longer the focus. So it is.

Quote: I have not now at the Camera for the ND filter in the instructions, but quite commonplace to Reviews of slashCAM. It says inside, none of my cameras have such a filter. Only (semi-) professional video cameras have built-in ND filter. But if the camera has a filter thread, you can screw a ND filter front of Lens.

Quote: So that brings me to the Focal: Can I change the Camera? Ever heard of Zoom heard? ;)

Quote: With the DSLR with a 50mm fixed focal length, I have a 1.8 and he-Aperture wonderful results. I expect, of course, not with my video camera, that's clear. But the Aperture in the video camera is ONLY there so that the exposure right? The aperture of the camera affects the depth of field, but because of the small chips and short focal lengths, very little extent.
The closest you can see the effect, if one takes a long Focal ("zooming"), a relatively small image selects (such as a head in close-up) and makes the Aperture large as possible (eg 1.8). But as beautiful as s.der DSLR it will never - unless you are filming with the DSLR. ;)

Quote: I thought at the Camera is the same. So the automatic out and started to play around s.der Aperture. But ... because nothing is readjusted. If you like, that the exposure time is adjusted automatically according to Aperture, you have to Aperture Priority (use aperture priority). Presumably you have done the trial and error s.der DSLR, without knowing it.
However, if you switch for the camera to manual mode, you have to readjust the shutter speed yourself. This is synonymous s.der DSLR Sun

Quote: Since I do not s.möglicher "through art" find, so what is the more incoming light of an open Aperture it were offset by the "exposure time", I am completely on the tube. Even with video cameras, you can shorten the exposure time and compensate for a larger aperture. But in motion video with very short exposure times looks a bit choppy and "chopped off", so avoid one very short exposure times and should be better used neutral density filter. But all that has now become a video-knowledge for the advanced ". :)