nehemiahphoto wrote:
Ahh, I see. Yes, the lens exhibits the fringing you are talking about, but not severe or anything at all. I found in high contrast subjects at f2 and below I was getting purple everywhere. Otherwise I loved the lens. What is the type of optical occurance I am talking about classified as?
It is just a color cast, I would say. I don't believe that it has any particular name. It has to do more with the overall bluish cast, which at times could turn purplish, off the blue sky you subject/model takes on since you place the subject/model in a shaded spot while the sky is blue. In the film days, you need a "sky filter" to remove or minimize the cast but now, in the digital days, we have it easier and we just change the color balance.
i don't think it's color cast. I think you're talking about lateral ca, and I am talking about longitudinal ca, both considered ca. I think people (like me ) just call them both purple fringing. All the apo lenses I gave owned have no magenta/green issue, in or out of the focus plane.
AGeoJO wrote:
OK, your definition of purple fringing differs from mine. I consider longitudinal CA or purple fringing to be more the color shadows at harsh contrast transitions and that is mostly noticeable at OOF areas. In my book, it is not the overall tone of the subject like in your case. Again, based on my observation, the loCA is generally very well controlled in that lens. You may spot some at f/1.4 or f/2.0 at 100% image magnification but not bothersome.
What verison are you guys talking about ? Sony Zeiss 85mm f/1.4 ZA or Contax 85 1.4 ?
Is nehemiahphoto talking about C / Y version ?
Ronny _Olsson wrote:
What verison are you guys talking about ? Sony Zeiss 85mm f/1.4 ZA or Contax 85 1.4 ?
Is nehemiahphoto talking about C / Y version ?
nehemiahphoto wrote:
No. I have only shot the za. And my comments are exclusively about that--I've heard awesome things about the contax n version though
Sorry I read wrong .. you wrote the 85 CZ .. don't know how I got it for C / Y
nehemiahphoto wrote:
i don't think it's color cast. I think you're talking about lateral ca, and I am talking about longitudinal ca, both considered ca. I think people (like me ) just call them both purple fringing. All the apo lenses I gave owned have no magenta/green issue, in or out of the focus plane.
The dog picture you posted had very weak and unsaturated green, I would assume this is due to wrong tint on WB adjustment (too magenta). Some lenses just don't give you the same white balance as others, for example in my holiday I had 3 Zeiss lenses; 25mm ZE, 50mm Loxia and 135mm ZE - the 25mm differs on WB from the two other so that it was really hard to get photos look the same.
I haven't yet had privilege to try ZA series 85mm, so no idea how it's WB is compared to other lenses.
Samuli Vahonen wrote:
The dog picture you posted had very weak and unsaturated green, I would assume this is due to wrong tint on WB adjustment (too magenta). Some lenses just don't give you the same white balance as others, for example in my holiday I had 3 Zeiss lenses; 25mm ZE, 50mm Loxia and 135mm ZE - the 25mm differs on WB from the two other so that it was really hard to get photos look the same.
I haven't yet had privilege to try ZA series 85mm, so no idea how it's WB is compared to other lenses.
Samuli
That's true and a good observation. I've noticed this as well. I just a raw with no processing (a900 file if you are curious). Even with adjusted WB, the gue of the magenta shifts but does not disappear really. All the a-mount za lenses are impressive, except I haven't shot the 50za.
) just call them both purple fringing. All the apo lenses I gave owned have no magenta/green issue, in or out of the focus plane.
