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707 Purple Fringe examples....

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no..it is not.

but, i don't think you took this image using best settings.
All images look like ..hhhmm... they are not in a focus.

besides, it is very hard to take a picture of something that very brights, like sky and dark item....
 
Brian Smith said:
I took these this evening.

http://www.imagestation.com/album/?id=4292333413 (last two pics)

Does the purple fringing seem normal. I noticed it right off as
did my wife. Would you guys considers this "normal". The purple
seems very noticeable.

What do you guys think? Is this acceptable?

-Brian Smith
Click to expand...
From G2 owner perspective.

Hmm..G2 also has it, but it's different. It looks more like G1 shot. But it should be OK for "everyday" shooting. Can you make leaves against the light?
 
I can see it blown up but the shot is a bad exposure for about any camera - from shadows into bright sunlight is going to have a glare on any medium(digital or film) and its only apparent blown up - at print size I doubt it would be noticed.

I think your other pictures and other examples recently posted look great - every digital camera I have owned has had a quirk or two but only you can really know if the camera works for you.

One question I have is: What sharpening level are you using? I get mine tomorrow and I was wondering.
Brian Smith said:
I took these this evening.

http://www.imagestation.com/album/?id=4292333413 (last two pics)

Does the purple fringing seem normal. I noticed it right off as
did my wife. Would you guys considers this "normal". The purple
seems very noticeable.

What do you guys think? Is this acceptable?

-Brian Smith
Click to expand...
 
Looks just like S85 purple fringing. Common elements are that you may have been pointing towards sun (???) with hazy sky and camera used maximum aperture (F2 and F2.2 respectively) due to evening conditions. Is purple fringing "normal"? No. Is it unusual? No. This really doesn't worry me -- I would expect many cameras to have problems here. And remember the fast 5X lens comes at a cost. This is a case where you pay.

Try the same shots with aperture priority mode and set to greater than F5.
Brian Smith said:
I took these this evening.

http://www.imagestation.com/album/?id=4292333413 (last two pics)

Does the purple fringing seem normal. I noticed it right off as
did my wife. Would you guys considers this "normal". The purple
seems very noticeable.

What do you guys think? Is this acceptable?

-Brian Smith
Click to expand...
 
Brian Smith said:
I took these this evening.
Click to expand...
I'm one of the biggest nay-sayers against cameras with bad CA problems, but I think any camera would have problems with the extreme examples you show.

The ones that worry me are trees or roof-lines or fences against a perfectly blue sky that show fringing. Or even the shot of the white horse I cropped in an earlier shot. If we see fringing around a little girl's white sweater with a green bush in the background, I'm not keeping the camera. We'll see as more pictures come out (or when I take my own).

Bryan
 
It seems in those two pictures that you picked a tough situation for most any camera not to bloom or show CA. I notice that the pics are not all that focused. From my experience with my Sony F505V and S75, this will cause and accentuate CA purple fringing... which seems to be the case in these two shots. You sure picked the ideal blooming and CA conditions to shoot in these cases, darlker objects contrasted against a white sky background almost always will reveal any cameras CA or blooming tendencies!

With this in mind therefore, I do not think these two pictures are representative of what the F707 is or can do. Any zoom lens digital camera will bloom in those conditions.

So the F707 still has a chance here! :-)

Willyee.
Brian Smith said:
I took these this evening.

http://www.imagestation.com/album/?id=4292333413 (last two pics)

Does the purple fringing seem normal. I noticed it right off as
did my wife. Would you guys considers this "normal". The purple
seems very noticeable.

What do you guys think? Is this acceptable?

-Brian Smith
Click to expand...
 
I certainly didn't pick these tough conditions on purpose..... but I've learned a lot about what would be considered a prime candidate for fringing.

I have several red rock, landscape pictures that I'll post ASAP. Many of them turned out great.

-Brian
 
I didnt see any purple fringe on those pictures. But I did see Moire' patterns on diagonal lines. And that really surprised me. Because the sample full resolution pictures posted by some review sites didnt show much of that sort of thing. The only thing I've noticed that is really objectionable is the halo on subject outlines. Which might have something to do with in-camera sharpening. At any rate, its disturbing to see the Moire' pattern on the pictures you took. So I am wondering if its on the high resolution original images or is it the fault of your picture processing software or that of the web site?
 
I have pre-ordered the F707 and it is suposed to be in next week. I hate to say it, but I am starting to loose my excitement. The purple fringing may be a common problem among digital cameras - to some degree. But it seems to be worse in some of these first images posted so far. I also noticed it a lot in the pictures from the pre-production models. But I ordered it anyway hoping that it would be better in a production model

For the record, I have never seen this with my Kodak DC290. It has other issues for sure. But I have never noticed the purple fringing. Here is an example of a recent picture that I took:



I am pretty sure if this picture was taken with an F707, it would have produced purple fringing - especially around the leaves in the upper right-hand corner.

I still plan on picking up the F707 when it comes in and will give it a try.

Paul
Brian Smith said:
I took these this evening.

http://www.imagestation.com/album/?id=4292333413 (last two pics)

Does the purple fringing seem normal. I noticed it right off as
did my wife. Would you guys considers this "normal". The purple
seems very noticeable.

What do you guys think? Is this acceptable?

-Brian Smith
Click to expand...
 
Here is the original size picture:
http://www.fototime.com/7A1C276657BA47A/orig.jpg
IROC'N said:
For the record, I have never seen this with my Kodak DC290. It has
other issues for sure. But I have never noticed the purple
fringing. Here is an example of a recent picture that I took:



I am pretty sure if this picture was taken with an F707, it would
have produced purple fringing - especially around the leaves in the
upper right-hand corner.

I still plan on picking up the F707 when it comes in and will give
it a try.

Paul
Brian Smith said:
I took these this evening.

http://www.imagestation.com/album/?id=4292333413 (last two pics)

Does the purple fringing seem normal. I noticed it right off as
did my wife. Would you guys considers this "normal". The purple
seems very noticeable.

What do you guys think? Is this acceptable?

-Brian Smith
Click to expand...
Click to expand...
 
IROC'N said:
For the record, I have never seen this with my Kodak DC290. It has
other issues for sure. But I have never noticed the purple
fringing.
Click to expand...
I had the DC290, too. Loved the thing! In fact, some of the most striking digital photos I have were taken with that camera... kind of disquieting when I paid 3x as much for my G1, and people still pick out photos done with the DC290 as "favorites." :(

Anyway, I'm hoping that this fringing we're seeing is going to be rare. The problem is, I see it around the baby's white shirt, or just about anywhere a light color bumps up against a dark one... but I only see it when I look for it, and at full resolution, at that. Perhaps others won't notice, but I'll have to train myself to look away. :)

Bryan
 
Brian,

What are the chances of you reshooting the questionable photo with different sharpening levels? Zero(0) is the default but is not 0 sharpening. Minus two(-2) is.

I have a theory about the "Purple Fringe" and sharpening and white balancing.

CHEERS,
RON C
Brian Smith said:
Sharpening was default, "0"
Click to expand...
 
Ron C said:
I have a theory about the "Purple Fringe" and sharpening and white
balancing.
Click to expand...
What's the basis for this theory? It seems to contradict a lot of the body of knowledge that has been developed about this phenomenon.

Ron Parr
 
Brian Smith said:
Does the purple fringing seem normal. I noticed it right off as
did my wife. Would you guys considers this "normal". The purple
seems very noticeable.

What do you guys think? Is this acceptable?

-Brian Smith
Click to expand...
Brian,
First off, thanks for the shots, much appreciated.

Normal, I guess, is a relative question. Normal to what? I agree the purple is very visible. But, as others have noted, the pictures not only have an 'out-of-focus' quality, but you picked the perfect subject to exhibit purple fringing. I assume your asking whether the 707 is exhibiting any more fringing than another camera would given this same composition. I think, however, given the 'extreme' example/composition you discovered, the only way to answer that question is to go back with a 707 and some other digital cameras, take lots of test photos with each camera, discover the best settings (ie, those that best balance a reduction of the purple fringing while still producing a great shot), and then compare the best results produced by each camera.

I am intrigued. Once my 707 arrives, I'ld like to get my hands on a G2 and a 995 for an afternoon, and see how the cameras compare in real-world 'extreme purple fringing' settings.
 
Ron,

II believe that there are a number of sources of the dreaded "PURPLE FRINGE".

In some camera systems the optics are to blame for what is normally termed CA chromatic aberration. I feel that the Sony 505v/707 have little CA because of the super quality Zeiss lenses.

But, we still see the PF in many images. My theory is that a combination of what is being shot and the internal sofwate causes the PF. If you will look at most of the posted PF problems, the green channel is DEAD or nearly so -- thus PURPLE. How would the green get suppressed so much? Some have said blooming causes the PF but again why is the green channel dead? Phil's blackboard used to test PF is exhibited along side the bright white "L".

What happens in the dsp while the image is being finished for output to the Memory Stick?

Three or more algorithms are passed by the image.

The image is interpolated from the Bayer mask (GRGB) form to a pixel of each color at each input pixel location.

The image is white/color balanced using some statistical scheme based on user setup.

The image is sharpened, based on user setup (-2,-1,0,1,2), using something like Unsharp Mask (very poor name for it).

I believe that a combination of bright areas along side of rather weak areas show the PF as the red and blue channels are accentuated and green it killed. I have a simple synthetic test to show a poor mans white balance will do this but nowhere to upload.

Enough of my rambling.

CHEERS,
RON C
Ron Parr said:
Ron C said:
I have a theory about the "Purple Fringe" and sharpening and white
balancing.
Click to expand...
What's the basis for this theory? It seems to contradict a lot of
the body of knowledge that has been developed about this phenomenon.

Ron Parr
Click to expand...
 
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