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Old 8th July 2008   #1
fangyau
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Default Sunrise at Bedok Resevoir

Sunrise at Bedok Resevoir without sun
meet bro Jack on 0630am at bedok resevoir, take few shoots only
done some post process but. doesnt look like sunrise at all


|image added|


|image added, get some advice from CSer, hope this image looks better|





pics taken with my 2 weeks old 450D

Last edited by fangyau; 8th July 2008 at 11:29 PM.
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Old 8th July 2008   #2
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Default Re: Sunrise at Bedok Resevoir

Originally Posted by fangyau View Post

pics taken with my 2 weeks old 450D
for 2 weeks old, you have A LOT of dust.

the second picture says it all.. try to take note of composing with extreme distortion. you want it to work to your advantage, not your disadvantage. the distortion in #1 is very, very disorientating and does harm to your image's merit rather than add to it.

for #2, i think there is tilt, probably due to horizon perspective and a bit of axis tilt. other than that, gamma is lowered a tad too much, the treeline can be solid black but as a result of the shadow detail being lost the picture looks a bit weird. there is potential here though, as with usual sky/reflection pictures. i think this would work better as a more pano-style crop.
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Old 8th July 2008   #3
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Default Re: Sunrise at Bedok Resevoir

i only saw the dust on the lens when i come back, but dun have any brush to clean the lens right now.
wallet badly injured 2 weeks ago
the 2nd pics was taken in F32, tht's y all the dust visible

thanks for the advice bro, still learning
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Old 8th July 2008   #4
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Default Re: Sunrise at Bedok Resevoir

Originally Posted by fangyau View Post
i only saw the dust on the lens when i come back, but dun have any brush to clean the lens right now.

the 2nd pics was taken in F32, tht's y all the dust visible
Do you have an air blower? Anyway it is probably dust in front of the sensor not on the lens.

Any reason why you're taking that shot at f/32? I can't find what is the shutter speed - EXIF is missing, only tells me you're using ACDSee. Once you get to really small apertures you have to worry about softness from diffraction.
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Old 8th July 2008   #5
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Default Re: Sunrise at Bedok Resevoir

Originally Posted by lennyl View Post
Do you have an air blower? Anyway it is probably dust in front of the sensor not on the lens.

Any reason why you're taking that shot at f/32? I can't find what is the shutter speed - EXIF is missing, only tells me you're using ACDSee. Once you get to really small apertures you have to worry about softness from diffraction.
no air blower no dust pen yet.
infact i bought the camera 2 weeks ago without accesories in japan.
accesories over there damn expensive.
i check the sensor, there's no visible dust on the surface.
almost all the dust are on the protector filter of the lens.

the pic taken in F32 becos heard tht to take the Sun's ray i need shorter shutter speed n higher aperture.
bro can give advice on taken the rays?
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Old 8th July 2008   #6
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Default Re: Sunrise at Bedok Resevoir

acdsee becos batch resize using acdsee
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Old 8th July 2008   #7
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Default Re: Sunrise at Bedok Resevoir

Hi fangyao,

I don think its dust on sensor. U can test shooting on bright daylight and check to confirm. My shots also have, I suspect it was the flying birds, flew across yr frames. I shoot some portraits of my kids the very night, I din see anymore dust.
Hope this info helps.
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Old 8th July 2008   #8
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Default Re: Sunrise at Bedok Resevoir

Originally Posted by Jack Chen View Post
Hi fangyao,

I don think its dust on sensor. U can test shooting on bright daylight and check to confirm. My shots also have, I suspect it was the flying birds, flew across yr frames. I shoot some portraits of my kids the very night, I din see anymore dust.
Hope this info helps.
halo Jack.
let me check tonight after i back to my home.
tk
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Old 8th July 2008   #9
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Default Re: Sunrise at Bedok Resevoir

Originally Posted by fangyau View Post
the pic taken in F32 becos heard tht to take the Sun's ray i need shorter shutter speed n higher aperture.
bro can give advice on taken the rays?
You need shorter shutter speed n smaller aperture, you are correct, but how short a shutter and how small an aperture depends on the amount of light. Do you know what's the shutter speed for that shot? I suspect (though I don't know for sure, not being there) that you might be able to get away with a faster shutter speed and a larger aperture. You could also use a neutral density filter to reduce light further.
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Old 8th July 2008   #10
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Default Re: Sunrise at Bedok Resevoir

Originally Posted by lennyl View Post
You need shorter shutter speed n smaller aperture, you are correct, but how short a shutter and how small an aperture depends on the amount of light. Do you know what's the shutter speed for that shot? I suspect (though I don't know for sure, not being there) that you might be able to get away with a faster shutter speed and a larger aperture. You could also use a neutral density filter to reduce light further.
thanks bro, i will try to play with it when i get the chance.
only can do it on sunday morning, sat need to work for half day.
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Old 8th July 2008   #11
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Default Re: Sunrise at Bedok Resevoir

bro jack, i think i know about the dust
apart from the few dust on the lens, most of the gray color dots are actually the tiny tiny tiny white color insect flying tht day.
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Old 8th July 2008   #12
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Default Re: Sunrise at Bedok Resevoir

Depending on what you saw during that shoot out
and the timing wise,sunrise can have a lot of yellow light
is this HDR?
looks a little dark on the tree section but I like the sky for #2
get some more shots and try again
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Old 8th July 2008   #13
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Default Re: Sunrise at Bedok Resevoir

@_@ many thing to learn
ya i use the 'merge to HDR' features in CS3.
maybe tonight free then i try again in CS3
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Old 8th July 2008   #14
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Default Re: Sunrise at Bedok Resevoir

Try f/16 next time. I think that should be enough, and yet won't push the shutter speed beyond the camera's limits. At f/22 and f/32 you are going to see all the sensor dust.
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Old 8th July 2008   #15
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Default Re: Sunrise at Bedok Resevoir

Originally Posted by Jack Chen View Post
Hi fangyao,

I don think its dust on sensor. U can test shooting on bright daylight and check to confirm. My shots also have, I suspect it was the flying birds, flew across yr frames. I shoot some portraits of my kids the very night, I din see anymore dust.
Hope this info helps.
flying birds do not look like that, that is the characteristic look of sensor dust.

when you take kids, what fstop do you use? if it is wider than f/8, you will not see dust.
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Old 8th July 2008   #16
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Default Re: Sunrise at Bedok Resevoir

Originally Posted by fangyau View Post
the pic taken in F32 becos heard tht to take the Sun's ray i need shorter shutter speed n higher aperture.
bro can give advice on taken the rays?
the part in red is the one that you need, resulting in shorter shutter speed part.

but do you UNDERSTAND why this is so? understanding is omre important than knowing what process to use.
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Old 8th July 2008   #17
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Default Re: Sunrise at Bedok Resevoir

Originally Posted by night86mare View Post
the part in red is the one that you need, resulting in shorter shutter speed part.

but do you UNDERSTAND why this is so? understanding is omre important than knowing what process to use.
bro u mean by fixing a shutter speed and shoot with a higher aperture?

btw guys, i tested with my camera, there's no dust visible on the sensor, i took few shoot, 3 dust particle visible and its caused by tamron lens, by changing to another 50mm 1.8. then there's no dust visible.

the many many gray dots are caused by some extremely tiny flying insects on reservoir that day.
(tiny white color flying insects tht somehow gather n flying in a bug bunch)
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Old 8th July 2008   #18
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Default Re: Sunrise at Bedok Resevoir

Originally Posted by night86mare View Post
the part in red is the one that you need, resulting in shorter shutter speed part.

but do you UNDERSTAND why this is so? understanding is omre important than knowing what process to use.
actually i didn't know that (cos never really try too many landscape and never have any sun ray shots).

is it the same as the star burst effect of street lightings under small aperture and resultant diffraction?
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Old 8th July 2008   #19
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Default Re: Sunrise at Bedok Resevoir

Originally Posted by fangyau View Post
bro u mean by fixing a shutter speed and shoot with a higher aperture?

btw guys, i tested with my camera, there's no dust visible on the sensor, i took few shoot, 3 dust particle visible and its caused by tamron lens, by changing to another 50mm 1.8. then there's no dust visible.

the many many gray dots are caused by some extremely tiny flying insects on reservoir that day.
(tiny white color flying insects tht somehow gather n flying in a bug bunch)
go and take pictures with any lens now, look for a white wall, make sure your focus is to infinity, go very close to the wall, and expose for ev +1.0

dust in the lens is rare that it will cause such problem unless it is a lot and very big.

for the tiny flying insects, believe you me, i have been there before, i have taken at f/32, all the insects also never appear. they are much too tiny to appear. in terms of angle of view. unless your insects that you got are really mutated and huge.
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Old 8th July 2008   #20
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Default Re: Sunrise at Bedok Resevoir

Originally Posted by zoossh View Post
actually i didn't know that (cos never really try too many landscape and never have any sun ray shots).

is it the same as the star burst effect of street lightings under small aperture and resultant diffraction?
yes, something to do with the lens aperture blades. which is why some people can get star, others get a round thing with many spikes around it. those are with more blades.

when the sun is a concentrated source of light, it will turn into the street lightings. it is also to do with relative intensity. for example, if you take street lightings with light still in the sky, you cannot get the starburst. when the sky is dark, very easy to get.
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