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View Full Version : Weird rendering of bright lights?

ywenz
11-24-2006, 06:52
Is this a true problem of the M8? There's no streaking in this pic, but the bright light sources are hella ugly and has a slight posterization effect to it..

http://static.flickr.com/117/304725525_8e6cdc3e23_b.jpg
Gabriel M.A.
11-24-2006, 07:34
Who knew, ywenz got an M8 and he's shooting pictures with it...
Todd.Hanz
11-24-2006, 07:43
Who knew, ywenz got an M8 and he's shooting pictures with it...

what! a closet M8 user? go figure. :eek:

Todd
roblumba
11-24-2006, 16:40
I don't understand, is that an M8 pic? Which lens and ISO?
Ash
11-24-2006, 16:44
Not bein funny, and I'm keen on being facetious as often as I can, but cmon doesn't that sniff of sh*t stirring to you peeps? Ywenz I know you arent a troll, but you sure could shortlist as one :D
jaapv
11-24-2006, 16:44
That looks a lot like the sensor blooming CMos sensors exhibit.
Avotius
11-24-2006, 16:44
those are some pretty ugly effects around the lights, my 20D doesn't do that, the blue artifacts around the light sources is now that I look at it more, REALLY ugly...hm....no long exposures with m8, check
Ash
11-24-2006, 16:46
The M8 opens up a new realm of photographic opportunities

...as long as you don't shoot long exposures, at night, under certain/all light conditions, wear any synthetic or natural fabrics, and have a dust-free universe
ok ok now i'm the troll :D
harmsr
11-24-2006, 17:15
The short answer is NO. The M8 has issues, but also produces some of the nicest files in a 35mm format size digital camera.

Someone played with that one.

Ray (Yes, I have one and have shot a lot of night scenes with it.)
ywenz
11-24-2006, 21:07
I didn't take the M8 pic and I surely didn't modify it. See the link to original below.

http://www.flickr.com/photos/silberman/304725525/

It was taken at 320 iso @ 1/250... quite a strange effect.

I would expect at least a smooth rendering of bright light sources.. something like the Ricoh pic here:

http://static.flickr.com/109/296870171_2516be199f.jpg
harmsr
11-24-2006, 21:21
ywenz,

I didn't say that you did. I stated that the M8 does not render like that naturally.

I still say that someone played with that one. Probably by poor processing of the RAW.

Best,

Ray
harmsr
11-24-2006, 21:22
I just looked at the link again and it says jpeg tests from the M8.

My comments are all relative to RAW, as I have the jpeg function turned off and have never shot a jpeg straight from the camera.

Best,

Ray
Trius
11-25-2006, 05:41
So the question is, can one shoot jpeg with the M8, right?
ywenz
11-25-2006, 05:58
The real question is I haven't seen this type of effect reported. It is such a major image artifact that I want to know if it is really prevalent when shooting into bright lights in JPEG or RAW mode..

and jaap, this is not an artifact from cmos sensors. :rolleyes:
roblumba
11-25-2006, 06:36
I asked the guy a few questions in the flickr comments. I asked him about which lens / filter, if he's seen this before and if he also tried DNG for the same pic. I'll post what he says.
jaapv
11-25-2006, 08:57
The real question is I haven't seen this type of effect reported. It is such a major image artifact that I want to know if it is really prevalent when shooting into bright lights in JPEG or RAW mode..

and jaap, this is not an artifact from cmos sensors. :rolleyes:
I said: looks like., not :is:rolleyes:

The blue rings are symmetrical in the centre and asymmetrical towards the edges.It suggests something like a lens aberration, a filter flare, more info needed..
AShearer
11-25-2006, 09:03
The real question is I haven't seen this type of effect reported. It is such a major image artifact that I want to know if it is really prevalent when shooting into bright lights in JPEG or RAW mode..

and jaap, this is not an artifact from cmos sensors. :rolleyes:


For what it's worth. Here is a shot into bright lights of various properties, i.e. sodium, tungsten etc.

http://www.rangefinderforum.com/photopost/showphoto.php?photo=48990&cat=500&ppuser=6015
ywenz
11-26-2006, 08:23
I found another pic that shows this posterization effect. An otherwise great shot is ruined by the color banding around the sun...

http://static.flickr.com/119/306517374_2d766f7c95_o.jpg
jaapv
11-26-2006, 09:06
Unfortunately, that is what digital images do, especially if photoshopped in 8 bits:
Canon 10D Shot RAW, converted to 8-bit, only sharpened and resized. A Cmos sensor does this all the time...

http://i36.photobucket.com/albums/e32/jaapv/sunband.jpg


Fortunately, the M8, if converted properly, has no such unpleasant tendencies:
Converted to TIFF 16 bits, resized and exported to JPG, nothing else..


http://i36.photobucket.com/albums/e32/jaapv/supersun.jpg


Your shot :If it indeed was taken with a M8: user error,either in conversion or in post-processing.
ywenz
11-26-2006, 09:15
jaapv: good to know because that user had a series of sunset photos with the M8 and they all exhibited the harsh banding in the sky, exposure was right on otherwise..
jaapv
11-26-2006, 09:29
As an example, the only thing I did here was convert it to 8-bit jpg and "adjust" it with levels, curves and contrast ....:(

http://i36.photobucket.com/albums/e32/jaapv/unpleasant.jpg
srijken
04-22-2011, 23:32
Wow interesting to find such an old thread that exactly describes what I saw on some night time test shots with my new (old) M8...

For what it's worth, I only tried DNG through Lightroom 3, without doing anything strange to get this, using the 50mm Nokton. The effect also showed up on the in-camera preview.

I'll try some more things tonight, like varying ISO and DNG vs JPEG and let you know