hmm, that was scary

I just had some relatives over and I was feeding video from my camera sensor to the TV for a while and got a hot pixel that went blue

it seems like it was just heat management related though and temporary. It seems to have gone away after I turned the camera off for a bit

@AJH Could it be a new permanent hot pixel (dot) and it only got masked out when you turned camera off and back on?

The featured photos are too good nowadays :/

@Michael Though the second version is better, I think you've overdone it slightly, too yellow.

@EsaPaulasto no, cause I turned it on and off a few times and it was still there

I had to let it sit for about ten minutes

on my camera there is an actual procedure for remapping

I was going to try it but then saw the pixel was gone without doing it

@EsaPaulasto I actually prefer the former

If I saw a baby with that skin color, I'd wonder if his/her liver functions are quite so right...

^^the latter version.

Skin tone in the first version looks a lot healthier, though perhaps too pale even for a Scandinavian baby, and here's also 50% Italian there.

Could it be light reflecting from the clothes?

@AJH Yeah, it was just a thought and posted with no reconsideration :)

so I did a no-no on the PotW contest

I did a downvote

but only because someone changed their image and I was resetting his vote count to 0

because the previous had nice sand dunes with tracks from ATVs on them and was interestingly colored

but the new one is a non-descript skyline with what appears like it is some weird distortion or something

I liked the sand dunes photo too, though not voted it, I think.

Go Flickr!

Just tried to log in, which I have definitely done within the past year

and apparently I can't, since my "Yahoo Mail" account has expired

Expired?! Never heard that happen to anybody.

Then again, my account is not originally Yahoo's but from Rocketmail, which was later bought out by Yahoo. I've had that Rocketmail/Yahoo mailbox for over 15 years. It is not in daily, not even monthly, use.

@EsaPaulasto my Yahoo account nearly expired on me

they sent me an e-mail two months back that if I didn't log in within a month, they would close it

and it was actually from them, not some phishing attempt, I verified it thoroughly

Ok, I wonder how long would it take after last visit. A year?

yeah

I believe it was 1 year

that actually made me wonder if my old Juno account is still active. I'm amazed Juno is still in business

they are apparently still providing dial-up internet

which disturbs me greatly

:D

So this?

@MichaelNielsen hard to tell, still looks a little off to me, the whites of eyes seems funky and the tones in general seem very subdued

but I'm also on the blah monitor atm as well

the white is kinda blue, but if I shift the whites to be white, I turn the skin more yellow

Mods -- photo.stackexchange.com/questions/42081/…

same user "Web worm" posted now-deleted spammy answer lnking to "med sicences" blog here photo.stackexchange.com/questions/42059/…

yeah, it's very VERY spammy

though the conversation with themself is kind of entertaining

are all the sock puppet

here's hoping this spammer is less persistent than the one that has been plaguing IT Security for the last week and a half

atleast this one attempts to appear on topic, the IT Sec one is posting what claims to be links for various soccer matches

:( Stan still hasn't been back since mid July... hope he's ok

@AJHenderson Looks like he is in Facebook, but no public posts in his timeline.

With the dragonfly example at the bottom, I'm confused about what "highlight recovery" is

I'd have assumed that if something was clipped due to over-exposure, that applies just as much to RAW as JPEG

or am I mistaken?

and in that case is "highlight recovery" just a fancy way of saying "I lowered the exposure in my RAW processing software"?

MattJ, I'm not sure this is meant but I know that some algorithms exist where you try to reconstruct blown out blue-pixel using red and green-pixels. Not sure they do that

Digikam has a setting, where you can select various methods of highlight recovery

Not impressed with the results really.

@MattJ, maybe there is a difference between highlight-recovery and clipping? I'm curious too

@MattJ RAW has a dynamic range far greater than the JPEG shot. What is clipped for JPEG is not clipped for RAW generally. Highlight recovery pulls data down from outside the cliping range for the 8 bit image and brings it in to range

so it is actually pulling out information that would have been lost in an 8 bit conversion

so highlight recovery does not simply mean lowering the exposure

but rather pulling down the white point of a 12 or 14 bit color image in to the 8 bit color gamut

or closer to it

oxonianreview.org/wp/photo-of-the-week-self-portrait-2

You can still clip out of a 14 bit RAW, and then you are just screwed

which is why sometimes, even with highlight recovery pulled in all the way, you still have highlights that are clipped out

@EsaPaulasto from when is that image? There is no date, I think.

2009

@AJHenderson Ok, then why earlier were you saying you shoot -1EV, even with RAW?

oh, sorry, that was another year

"earlier" means "some time in the past 48 hours" I think

@MattJ because the camera was actually over exposing badly enough to push out of the 14 bit range

also, the amount of headroom you get depends on the exposure calculations of the camera and how it decides to process the preview. It may try to shoot to capture the full dynamic range or it may choose to go towards one end or the other of the available color space

not all shots get the same amount of headroom

I went out for a walk this evening (light going somewhat, and it's an overcast day), but was curious to see how things turned out under-exposing, and then pulling up in RAW processing

Got some rather disappointing pictures, I can say :)

@Unapiedra The photo of the week was new in February 2013, but of course the photo could have been older, just published in February.

Lots of noise

and icky colours (but that might be unrelated)

in general, a camera is going to try and get detail in both the darks and brights though

so for a very bright image with some dark spots, over exposure becomes a bigger risk even for shooting RAW

since it will try to get detail in shadow at the expense of headroom

@EsaPaulasto I wonder why that website, and can't quite figure out the cryptic caption.

@MattJ From my short experience on this field, I'd say pulling shadows up is always bringing heavy noise along.

if you are inside and it is mostly dark, then there will be a ton of headroom generally and you can take a completely washed out window and make the outside clear

but if the JPEG was to do that, the entire image would seem dark

because it isn't a linear mapping of brightness

so lets say that the camera can capture 12.6 EVs of dynamic range and 90% of the image is in the lowest EV, the JPEG would be developed using only the bottom EV or 2 so that the image is vibrant and not a giant black square

@EsaPaulasto Yeah, I see in the comments of the answer I linked that intentionally over-exposing and pulling down is a way to combat noise

but that small bright portion is washed out

So confusing!

but later on you can do highlight recovery that cuts the value of just that top bright bit to bring it down to where it fits with the rest of the dark scene

it's much easier to understand when you actually play with it for a bit

Trying :)

Meanwhile for photos I want to actually come out good, I might stop trying to be clever, seems to work best

@Unapiedra huh, thanks for pointing the website location out. I did not make the connection from Oxonian - Oxford, instead thought it was some place/location in Ontario, Canada.

@MattJ yeah, don't underexpose if things are dark

you only really want to underexpose in harsh lighting conditions

where the difference between bright and dark is huge

on an overcast day, it's probably all within the range of the 8 bit color space, so underexposing doesn't do anything other than catch less light

which makes the noise floor cause more issues than it has to

I was shooting a tree against the sky

ah

the tree would have been very dark then

Yeah

yeah, that's one where you need to actually over-expose to get details of the tree

and then under-expose to get details of the sky

so that's pretty much an HDR shot

I'll try again tomorrow if it's the same kind of weather (it will be, this is England)

not a lot can accomplish that in camera, even with a 12.6 EV range

shade on a cloudy day vs clouds backlit by the sun is a big gap in intensity

I guess another way to describe it is to think of the JPEG as a subset of the total exposure that the camera makes. The entire exposure gets put in the RAW file. There will always be a noise floor at the bottom because noise happens. You want to try to get the detail of your image to fall between the noise floor on the dark end and the cliping point on the bright end. You adjust your EV as neccessary to weight the image information to fit in the way you want

@Unapiedra Found date: January 25th 2012

ICC profile info pulled from the photo itself.

lol a Q about colourblind colour management

Well.. it could also be the date of when that ICC profile was created

@MichaelNielsen, well I see the irony but the question is dead serious

I know, but my attention is that Im colourblind too :)

and people often complain that my colours are weird

just scroll up as an example

I see

well, actually, I don't see

@Unapiedra Not so long ago Michael posted a pic of his baby and I sort of asked if there's any problem with the baby's liver functions, it was that much into yellow tint ;)

you are blind?

@EsaPaulasto, yes I saw the image

ok :)

@MichaelNielsen, no I was referring to the fact that I can't see the tint...

so to me it looks quite alright

you didnt see that the colour isd wseord?

ah

nope

the last one was quite nice, it was the middle version of the three.

okay, I'm checking the last version

in spain I was sitting at a winebar and we were talking about the yellow issue

I like the middle version best

huh, now I have to scroll back up and check again :D

amd I pointed at the buildings around us going "see here the photo has to be yellow as everything arpund us is yellow

and he said "erh, no theyre not" lol

hahaha

maybe as colour deficient I lack the capability to whitebalance correctly in yellowish blackbody light

in reallife

so when I reproduce the colour as I saw them on the photo it turns out yellower

it must be partially a matter of taste too

I prefer quite pale skin tones in my photos..

the problem is the physically correct colours (white/grey = x,x,x) is rarely the most beautiful, and sometimes you dont have a grey/white area in your photo.

for using the WB colourpicker

btw, is it okay to use clouds for the WB colourpicker?

Why not? I have used fog when there's been thick enough fog in photo (thick so that there's not a shade of background pushing thru)

I just wasn't sure

I use area picker in Sony's RAW-conversion software. There's a point pick-up tool too, but most of the time I use an area pick-up. Drawing a suitable rectangle over the area where I think a true white/grey is.

we had a huge discussion here about cloud colour. ideally tehy are supposed to be true white

but I swaer that danish clouds are sometimes yellow

:D

even in the early afternoon

must be those fish factories on the western coast of Denmark that make even the sky change color ;)

Esbjerg?

When I was a kid I was traveling from Germany to Denmark with my parents, and we had plans to stay a night at western coast in Denmark, but the smell over there was overwhelming, just impossible for a good night's sleep, and we kept on driving towards Kopenhagen, then settled for a camping area somewhere in the middle of your country :)

@MichaelNielsen Just opened a google map, and yes, it looks like it had to be Esbjerg.

that town is known for being smelly

@MichaelNielsen expanding far into the surrounding areas too.

"did you fart? " "no, Esbjerg is up ahead" :)

lol

so, even today? :) My experience is from about 35 years ago..

unles they went bankrupt. I havent been there since 5y ago

as external examiner for Medialogy bachelors

So it is the fishing industry there, or what else can make a smell like that?

its fish

k

most danes dont even like fish

you know why?

no, why?

smells fishy ;p

haha :)

most danes will only eat pickled herring and fishfillets

and smoked salmon

fewer will eat sushi

and even fewer will eat other types of fish

I put salmon in the oven, can't smoke them myself and buying ready-smoked salmon is just too pricey that I rather cook my own from raw

or is it bake when talking about things we put in the oven? :)

pickled herring is good too, so obviously I've got a danish taste for fish :)

bake is if it can rise. meat/fish is roasted in the oven

roast.. yeah, I just forget words so fast if I don't need to use them for some time.

well, fresh salmon in the oven is a bit advanced for danish stnadards :)