Green Cast

[dnaxe]

Looks like a reflection of something.
What's behind you? Another window?
It looks like light casted from another window behind you.

I agree.

If the curtains of that window were closed, as you say, it's kinda strange.

 

[piyoz]

i do have a uv filter on but i removed it and tried again, i still get this. so i'nm unsure how come i get this.:sweat:

 

[piyoz]

I agree.

If the curtains of that window were closed, as you say, it's kinda strange.

the curtain has alway been closed and i seldom open that window.

btw, does that cast looks blue or green to you? I think there's something wrong with my monitor??

 

[fengwei]

How come theres reflection? I got a window behind me but its covered with a curtain. and no direct sunlight from that window. The funny thing is that some other pic that i test out does not have this problem.

OT abit, can advise me where to meter so that the background will not be overexposed? And still able to see my son's face clearly? (i mean w/o flash)

The reflection might be caused by the front element of your lens :think:


For the OT, maybe you should try with fill flash so you'd get properly exposed face, and background too ...

 

[fengwei]

the curtain has alway been closed and i seldom open that window.

btw, does that cast looks blue or green to you? I think there's something wrong with my monitor??

It looks more blue than green here on my monitor

 

[Gengh]

How come theres reflection? I got a window behind me but its covered with a curtain. and no direct sunlight from that window. The funny thing is that some other pic that i test out does not have this problem.

OT abit, can advise me where to meter so that the background will not be overexposed? And still able to see my son's face clearly? (i mean w/o flash)

The green part looks very much like flare or some ghosting effect due to the light coming in through the window behind your son. The profile looks exactly like the zone around where the curtain is bundled up on the right. I think flares are very angle specific, so if you had change your angle slightly it might have gone away.

 

[VSonic06]

Hmmm...that greenish patch looks like the colour of the low-pass filter in front of the sensor. Strong light from the window next to your son's left seem to be reflecting off the sensor through the LP filter, reflected off the internal lens elements and back into the sensor again.

Rotate the greenish patch area 180° around the centre and you get this...

 

[Gengh]

Hmmm...that greenish patch looks like the colour of the low-pass filter in front of the sensor. Strong light from the window next to your son's left seem to be reflecting off the sensor through the LP filter, reflected off the internal lens elements and back into the sensor again.

Rotate the greenish patch area 180° around the centre and you get this...

Oh, that's an even better match than the curtains! I'm with VSonic on this one.

 

[hamustar]

Vsonic06 is a genius.

 

[dnaxe]

Hmmm...that greenish patch looks like the colour of the low-pass filter in front of the sensor. Strong light from the window next to your son's left seem to be reflecting off the sensor through the LP filter, reflected off the internal lens elements and back into the sensor again.

Rotate the greenish patch area 180° around the centre and you get this...

SWEET! :heart:

 

[airconvent]

Holy cow...vsonic06, you sure you are not a pentax designer previously? :thumbsup:
I don't think you can learn such things from books...

 

[VSonic06]

Holy cow...vsonic06, you sure you are not a pentax designer previously? :thumbsup:
I don't think you can learn such things from books...

Cannot be, I couldn't even find their showroom when I was in Shinjuku :bsmilie:

 

[piyoz]

VSonic06,

Thanks for solving the mystery.:thumbsup: Yah, it only show up at certain angle. But i was really wondering where its from..

 

[VSonic06]

The green light coming out of nowhere does seem spooky...especially if taken last month