What is Wrong with mi Night Shoot


Status
Not open for further replies.

hong

New Member
Feb 4, 2002
426
0
0
Visit site
#1
Any kind soul here can help explain the large white dots in the image??
Using S30


Image Size remain large inorder to see the ghost


ExposureTime : 1.00Sec
FNumber : F2.8
ExifVersion : 0210
DateTimeOriginal : 2002:03:25 20:28:32
DateTimeDigitized : 2002:03:25 20:28:32
CompressedBitsPerPixel : 3/1 (bit/pixel)
ShutterSpeedValue : 1.00Sec
ApertureValue : F2.8
ExposureBiasValue : EV0.0
MaxApertureValue : F2.8
SubjectDistance : 13.63(m)
MeteringMode : Division
Flash : Fired
FocalLength : 7.09(mm)
UserComment :
ExifImageWidth : 2048
ExifImageHeight : 1536
Vendor Original Information
MacroMode : Off
Self-timer : 10sec
CompressionRate : Fine
Flash : Red-Eye Reducing Auto
Sequence Mode : single
Focus Mode : Single
ImageSize : Large
Easy shooting mode : Night
Digital Tele : Off
Contrast : Normal
Sharpness : Normal
CCD Sensitivity : AUTO
MeteringMode : Evaluative
AF point selected : center
ExposureProgram : Easy shooting
Focal length of lens : 227-682 Unit:32(mm)
White Balance : Tungsten Lamp
OpticalZoom Step Value : 0
Flash bias : 0 EV




ExposureTime : 1.00Sec
FNumber : F2.8
ExifVersion : 0210
DateTimeOriginal : 2002:03:25 20:27:52
DateTimeDigitized : 2002:03:25 20:27:52
CompressedBitsPerPixel : 3/1 (bit/pixel)
ShutterSpeedValue : 1.00Sec
ApertureValue : F2.8
ExposureBiasValue : EV0.0
MaxApertureValue : F2.8
SubjectDistance : 4.19(m)
MeteringMode : Division
Flash : Fired
FocalLength : 7.09(mm)
UserComment :
ExifImageWidth : 2048
ExifImageHeight : 1536
Vendor Original Information
MacroMode : Off
Self-timer : 10sec
CompressionRate : Fine
Flash : Red-Eye Reducing Auto
Sequence Mode : single
Focus Mode : Single
ImageSize : Large
Easy shooting mode : Night
Digital Tele : Off
Contrast : Normal
Sharpness : Normal
CCD Sensitivity : AUTO
MeteringMode : Evaluative
AF point selected : center
ExposureProgram : Easy shooting
Focal length of lens : 227-682 Unit:32(mm)
White Balance : Tungsten Lamp
OpticalZoom Step Value : 0
Flash bias : 0 EV
 

F

fcpga

Guest
#2
its a common problem with Canon S30/40 camera.

Check out the user comments in DPreview you will know
 

F

fcpga

Guest
#4

Tweek

Senior Member
Jan 17, 2002
2,027
0
0
39
East
www.weekai.com
#7
Originally posted by Simon


RUBBISH, just by looking at the setting the 2 photos are taken, it's all wrong. Using whatever camera at the same setting will not give you any better shots.

The FNumber : F2.8 wide open should not be use for Long Exposure shots. Lack of DOF and short exposeure time will make your photos details unsharp.

Try shooting at a bigger FNumber or Smaller Aperture. Example: f/16 @ 30secs
Simon, but he was referring to the white spots you know, not how sharp the images are, etc. The photos are taken at 1s, which shouldn't give much hotpixels, if the white spots are suspected to be hotpixels. I take niteshots at F2.8 and 2-4s exposure cos I can't afford a F8 and 8s, sure got lots of hotpixels. And I don't get white spots like that.
 

Simon

ClubSNAP Admin
Staff member
Jan 17, 2002
667,081
1
38
27
ClubSNAP
simon.clubsnap.org
#8
Originally posted by Tweek


Simon, but he was referring to the white spots you know, not how sharp the images are, etc. The photos are taken at 1s, which shouldn't give much hotpixels, if the white spots are suspected to be hotpixels. I take niteshots at F2.8 and 2-4s exposure cos I can't afford a F8 and 8s, sure got lots of hotpixels. And I don't get white spots like that.
Yap, my mistake, del my own post, i forgoten the consumer digicam can't set to f/16 or smaller.
 

hong

New Member
Feb 4, 2002
426
0
0
Visit site
#9
Originally posted by ckiang
Looks like your lens is not very clean, which is probably what caused the round spots.

Regards
CK
other shoots using Aperture P or Shutter or Manual are ok, even with long exposure, onli using Auto Night setting then i get to see this

attach a pic using AP taken at the same time, with 10secs exposure


is it still related to dirty lens??
 

N

Newbie0001

Guest
#10
Hong, I suspect that it is because of the filter.
Or you can try to shift your camera a bit to avoid those flare (see whether it works or not) sometimes I also get this kind of photos also.;)
 

hong

New Member
Feb 4, 2002
426
0
0
Visit site
#12
Originally posted by Newbie0001
Hong, I suspect that it is because of the filter.
Or you can try to shift your camera a bit to avoid those flare (see whether it works or not) sometimes I also get this kind of photos also.;)
which camera are you using??? S30 do not allow me to attach any filters
 

#13
Originally posted by hong


other shoots using Aperture P or Shutter or Manual are ok, even with long exposure, onli using Auto Night setting then i get to see this

attach a pic using AP taken at the same time, with 10secs exposure

is it still related to dirty lens??
Hmm... that's a bit strange then. But being a 10s exposure, it also means that the aperture is smaller, so the picture itself is also sharper, as you can see.

Your original posts sure look like a combination of dust particles on the lens and flare from nearby lights.

Regards
CK
 

hong

New Member
Feb 4, 2002
426
0
0
Visit site
#14
Originally posted by mpenza
hong, may I use your pic? I circled some problem areas in case others misunderstood what you meant....
yup those are the ones i am refering to?? any idea what's wrong??
 

hong

New Member
Feb 4, 2002
426
0
0
Visit site
#15
Originally posted by ckiang


Hmm... that's a bit strange then. But being a 10s exposure, it also means that the aperture is smaller, so the picture itself is also sharper, as you can see.

Your original posts sure look like a combination of dust particles on the lens and flare from nearby lights.

Regards
CK
attached another pic taken same time using same aperture of F2.8 with 4secs exposure


isit still dirty lens?? if yes i may want to bring to canon customer services
 

mpenza

Senior Member
Jan 18, 2002
12,938
0
0
Singapore
www.instagram.com
#16
Originally posted by ckiang


Your original posts sure look like a combination of dust particles on the lens and flare from nearby lights.

Regards
CK
some people have very clean lens but still get the same "artefacts" though. It's a weird phenomenon. could it be reflection within the camera (between different pieces of glass or even between some internal parts)?
 

hong

New Member
Feb 4, 2002
426
0
0
Visit site
#17
Originally posted by mpenza


some people have very clean lens but still get the same "artefacts" though. It's a weird phenomenon. could it be reflection within the camera (between different pieces of glass or even between some internal parts)?
i post the 2 same identical photos just now, look again, 2 pics taken @ same time but with white dots @ different locations..
 

#18
Originally posted by mpenza


some people have very clean lens but still get the same "artefacts" though. It's a weird phenomenon. could it be reflection within the camera (between different pieces of glass or even between some internal parts)?
Possible. :) But I don't use Canon, so ....

I only know I have similar problems on my Coolpix 950 when the lens is not so clean, so I thought it should be the same. ;p

Regards
CK
 

Kevin

New Member
Jan 18, 2002
897
0
0
North West
Visit site
#19
Originally posted by fcpga
see here,

http://www.dpreview.com/reviews/read_opinions.asp?prodkey=canon_s30

http://www.dpreview.com/reviews/read_opinions.asp?prodkey=canon_s40

it doesn't appear on every shot, but maybe 1 in 6-7. quite annoying.

Even some people in this forum and hardwarezone. Just do a search.

Don't understand why people still swear by Canon. But I will never ever buy a Canon.
I C. IS that why you change your avatar back to Oly C2040.

Can I assume that you are not aware of this problem before you buy your S40? Other wise you wouldn't have bought it if you have read the discussion in forum?
 

hong

New Member
Feb 4, 2002
426
0
0
Visit site
#20
Originally posted by ckiang


Possible. :) But I don't use Canon, so ....

I only know I have similar problems on my Coolpix 950 when the lens is not so clean, so I thought it should be the same. ;p

Regards
CK
but how come for this camera, the white dots appear @ different locations??
 

Status
Not open for further replies.
Top Bottom