Logo Logo
/// 
Schärfe-Mechanismus bei Billig-Camcordern

Focus Mechanism in cheap camcorders



Frage von Holger Svenson:
Januar 2006

Hello!
The other day gave me a friendly cameraman says that is regulated by the Amateur Cams cheap these days about the sharpness, easy to move the CCD lens, instead of using a lens with movable lens elements to. Synonymous and that it was a major reason that there is no mechanical focusing on the (mini) DV cameras there, because there'll be logically controlled by stepper motor needs.
I can find nothing about the network.
If you have views of someone that heard about it?
Liebe Grüße,
Holger



Antwort von Jan:

Is understandable if the said one of the filmmakers with tens of thousand ¬ rummläuft cameras.
On the cheap Amateurcams's of which mention are synonymous SonyHC 90, PC 1000 or Canon MVX 4i ie 1000 ¬ cameras. How could a camera with 11 cm length synonymous otherwise have a 32x optical zoom with say 10 elements in 3 groups.

Meinermeinung it will not change until s.Semiprofiklasse eg Panasonic AG DVX 100, which clearly exists in front of one CCD Lens. They (a mechanical coupling between the large zoom ring and the lens system, with a servo motor has one or is switched off)

It could well be synonymous already in class Canon XM 2 as has happened in, for instance, dismantle all parts s.besten Camera (At that time my XM 2mir too expensive for such experiments)

Such data preserves the boldness to break down only in specialized dictionaries or professional film magazines (or camera) - otherwise hatt's your man I do not think experience synonymous ...

Request For companies do not even need it, my last real technical issue at JVC lasted two weeks and only the JVC 6x expert of Germany had the correct answer (the e-mail forwarding had verat ...)

So who here has idea and screwed s.Kameras like rum? Ruessel Blackeagle123 or were there probably Kanidaten?

LG
January



Antwort von prem:

So just know I do not synonymous, but I can imagine me the okay.
But what would it really so bad? That is probably synonymous much faster than an optical focus.
clear ne decent manual sharpness control is nciht possible, but it takes a "cheap camcorder" acuh not necessarily ...

Ärgelich I find it when vefügen synonymous so-called "prosumer" camcorders "no ordinary sharpness control. So the whole is regulated only indirectly via a servo.
Real manual focus can be found only in the shoulder-mounted camcorder class. that does not begin at ¬ 5000 ...
could therefore be a good thing that is itself mounted in such a XM2 and VX2100 "CCD focus."

The whole could really be related to the auto focus is so much faster.
AF SLRs, although usually at a very sophisticated, but included a moving picture sharp too slow.
I also remind me of old cameras, with optical focusing, and auto focus, which moves steadily toward her and what has made it almost impossible for a shooting ...

And if you look at the expensive professional cameras with optical focus almost all of which have no more AF.

I think that its advantages for the Handycam's class. And finally, there is almost no preference ... the images are so sharp or so .. (with the small chips could be easily fixed synonymous compromising Focus obkjektive. schafr everything is ja eh;)

Greeting
ULY





Antwort von AndyZZ:

The focus can be set by moving the CCD ....
Can it work at all? But most, if I was doing at the same time synonymous s.den lenses! Because if I would only move the CCD, it would change my perspective, yes! I next slide off the CCD of the lenses is that wide-angle picture in all axes, I push the CCD dense ran, I'm more the telephoto effect.
As a result of "smallness" of the CCD on the depth of field is rather straightforward yes (that) a lot of depth, I think, synonymous Lenses need not be so burdensome Waaaahnsinn.
Hmmm, so I really can not imagine that the CCDs are on sliding plane. What is it with 3-chip camcorder? Should all be moved simultaneously and absolutely evenly?? How the should work then! In the 3-Chipper a prism sits in front of the chips, so that the light is distributed in RGB.
No, I think moving the CCD is more of a fairy tale.

Greeting

Andy



Antwort von Markus:

The image intensifier so also need to pass electronic signals (how-pin cable?). How was it possible to be there, all on top of constantly moving in a fast speed, without it comes) for intermittent contact (= default picture?

Would not it be easier and cheaper, a few lenses that have no other connection to move to? ;-)



Antwort von Jan:

Hello you,

yes I had something similar as Holger synonymous heard. Unfortunately, this can probably only a Kamerabauhersteller know and say with 100% certainty. Or who schaubt his old cam on time?

LG
January



Antwort von Markus:

The old cams were not "cheap". ;-)




Antworten zu ähnlichen Fragen:
Capturen in VD(Mod) eines Camcorders
Kauf eines zu mir passenden Camcorders
S-VHS Aufnahmen per D/A-Wandler des Camcorders auf den PC bringen (DVD)
Welche Linux-Software zum Bearbeiten von Videomaterial eines Camcorders
Auto Focus
SmallHD Focus 7"
Cartoni Focus 12
Focus pumpen rausrechnen
Glidecam Follow Focus
Remove Focus Breathing
Timeline focus on Clip?
kinefinity terra 6k unscharf out of focus
Follow Focus. Funk nachrüsten?
DjI Follow Focus wireless
Billiger Follow FOCUS vs teuren
Bezahlbares Wireless Follow Focus System?
Ronin S + Focus Wheel Sony A6400
GH5: Touch-Focus - aber wie?
Volontariat Steadicam Assistenz / Focus Pulling
FIX: Samyang und infinity Focus
Versetzung des Focus Wheel am Ronin SC
DJI Follow Focus / Einstellen möglich?
GH5 scheinbar focus peeking verstellt
Follow Focus Sachtler versus Manfrotto
DSLR vs Spiegelos (z.B. D750, 5D vs. G4H), Focus
SmallHD liefert endlich Focus OLED aus

















weitere Themen:
Spezialthemen


16:9
ARD
AVCHD
AVI
Adobe After Effects
Adobe Premiere Pro
After effects
Apple Final Cut Pro
Audio
Avid
Cam
Camcorder
Camera
Canon
Capture
Capturing
Clip
EOS
Editing
Effect
Error
Export
File
Files
Film
Final Cut
Format
Formate
HDR
Import
JVC
Layer
Light
MAGIX video deLuxe
Magix
Microphone
Monitor
Movie
PC
Panasonic
Pinnacle
Pinnacle Studio
Player
Premiere
RAM
RED
Recording
Red
Software
Sony
Sound
Studio
TV
Tape
Video
Videos