| Chromatic aberration in the Canon XH A1 (S)
Question by Frank B.:
Februar 2009
Hello,
after the successor of the Canon A1 as A1S on the market, provide me with the question whether CA s.den often complained about the previous model slightly modified (improved) has. I have to get different information. In a video magazine I read that Canon besides a number of changes in signal processing and in synonymous Features s.Lens something has changed to better reflexes and CA to grips with. Has anyone ever possible a comparison between the A1 and A1S this had?
I must say that I never even made recordings of both cameras have. I know only my 1st FX I am therefore not sure whether the CA of the XH A1 are really as bad as they are often depicted, as in Comparison to FX 1? If they are always on, or only in certain low light situations? There are apparently many users of the A1, the highly satisfied with the picture are.
Background of my question is for me to assess whether the A1S but not entirely negligible price difference from the previous model is worth. Here are the point of the CA, which for me is to assess s.schwersten.
Frank
Answer by strike300xxx:
First joined CA's only in certain lighting situations.
Answer by domain:
CA occurs in all affordable lenses (especially with zoom lenses) are more or less on principle and is independent of the lighting situation. However, they do not fall in all images equal to, with diffused light and contrasts s.Rand little bit less.
Even my FX1 has CA, specifically in the telecommunications sector is visible, but the zoom has a lower content than the range of A1 and therefore synonymous, there are fewer optical problems.
In the EX1 / 3 is the problem electronical fought, but not effective during zooming.
Answer by Jogi:
The FX1 was in Comparison with XHA1 few significant problems with CA, so they are usually not in appearance. For the A1, they are for my taste far too pronounced and often genuinely disturbing.
Who XH A1S the SDI does not need saving much money and should not necessarily be to the "S" grab! Who also still on XLR can be waived with a FX 1000 better served!
Answer by ruessel:
Who also still on XLR can be waived with a FX 1000 better served!
Why?
Answer by Frank B.:
Thank you first s.alle that replied.
So, the question of an improvement in the CA at the S-model has not yet been clarified.
But I have you, domain, properly understood, that when you criticized CA A1 to the larger focal as compared to the FX 1 zurückführst?
That would mean that the camera in a specific focal length range makes little problems, but also very vulnerable for it.
So I had my FX 1 synonymous time a recording, it was a light on a cow pasture in the telecommunications sector recorded when the cow is a wide green border had (no, it was not the grass of the pasture;)). The image occurs only s.rechten on the screen. I've unfortunately only seen at home s.Monitor. First I thought it was a defect in the camera. For further control recordings but it was nothing more to see. Apparently I have an "unfavorable" light and contrast erwischt situation. If such things would occur, but frequent, for me it would be pretty annoying.
Since I am in relation with the A1 in various tests of these aberrations have read, I have become pretty skeptical, especially when other camera tests relatively little of it reads. This does not mean synonymous, because the A1 is of more professionals and Semiprofis purchased, on sowas ensured. The "Normalo" error will contribute to this picture may not register or for granted.
In nearby Blödmarkt is synonymous always as a promotional trailer, apparently of JVC AVCHD Consumercamcordern rotated, which will prove what a brilliant images make the parts. These recordings are often synonymous, I see green and red edges s.harten contrasts. I know something of my FX 1 not to the extent that up to just above the cow with recording, because it was really extreme.
Jogi's contribution encourages me to believe that the problem of CA in the A1, at least in this price segment, particularly succinct occurs. A direct comparison of A1 and A1S this would certainly be synonymous helpful for others.
Frank
Answer by ruessel:
Jogi's contribution encourages me to believe that the problem of CA in the A1, at least in this price segment, particularly succinct occurs.
Yes, when a 20 times zoom lens it is probably no different in this price segment. We can only hope that Sony or Canon in the successor models soon, at least in the CA image processor arithmetically alleviate can see EX1 / 3
Even if something else occasionally Canon claims that the lens was in the "S" version does not change in CA. Why synonymous, Sonywith her new FX1000 / Z5 can not synonymous yes it better ....
Answer by Frank B.:
Hello RUSSELS,
after your last statement for so long without being in the room, I assume that they are true;)
So: In the CA differ A1 and A1s not because they possess the same lens. Also, these cameras are no longer problems with the CA than other cameras with 20 - fold lenses, such as the SonyFX 1000th
More I did not want to know.
Thank you s.Euch all.
Frank
Answer by Jogi:
Even if something else occasionally Canon claims that the lens was in the "S" version does not change in CA. Why synonymous, Sonywith her new FX1000 / Z5 can not synonymous yes it better ....
As far as I read some test synonymous and have seen clips hold the CA of both cams (FX1000 and Z5) in the normal-normal limits. The XhA1 therefore produces more CA. But I do not have the two cams in the hand held or test them.
@ Trunk, you have the FX1000 and Z5 can test?
Answer by ruessel:
@ Trunk, you have the FX1000 and Z5 can test?
Yes, here: http://www.fxsupport.de/blog/01_09.html
Currently I am working with the XHA1 and the XHA1s.
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