Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and our Privacy Policy.
OK
Forums  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear
Guest
Forums  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear
Register to forums    Log in

 
FORUMS Photo Sharing & Discussion Critique Corner 
Thread started 15 Jul 2008 (Tuesday) 16:33
Search threadPrev/next
sponsored links (only for non-logged)

what am i doing wrong here?

 
chop4life
Hatchling
5 posts
Joined Jul 2008
     
Jul 15, 2008 16:33 |  #1

what is causing the faded white specs on the sky? JPEG artifacts?

IMAGE NOT FOUND
HTTP response: NOT FOUND | MIME changed to 'image/png'


my ISO level is not high either... TIA!
Camera Model: Canon PowerShot A560
Flash Used: Yes (Auto, red eye reduction mode)
Focal Length: 5.8mm
CCD Width: 1.54mm
Exposure Time: 0.017 s (1/60)
Aperture: f/2.6
ISO equiv: 100
Exposure Bias: 0.33
White Balance: Auto
Metering Mode: Matrix
Exposure Mode: Manual



  
  LOG IN TO REPLY
Flo
Gimmie Some Lovin
Avatar
44,987 posts
Likes: 16
Joined Jul 2007
Location: Nanaimo,B.C.
     
Jul 15, 2008 16:45 |  #2

i am thinking the settings are slow..but I am most likely wrong..


you're a great friend, but if Zombies chase us, I am tripping you.

  
  LOG IN TO REPLY
LeesaB
"Patience is a what? "
Avatar
14,682 posts
Joined Dec 2006
Location: It's just St. Louis now!
     
Jul 15, 2008 17:44 as a reply to  @ Flo's post |  #3

It looks a bit grainy to me.

Have you tried running it through noiseninja?


LeesaB
www.LisaNikole.com (external link)
ME (external link)

  
  LOG IN TO REPLY
Titus213
Cream of the Crop
Avatar
19,403 posts
Gallery: 4 photos
Likes: 36
Joined Feb 2005
Location: Kalama, WA USA
     
Jul 16, 2008 02:04 |  #4

It's called noise. Your image is seriously underexposed. That little ole flash did all it could but it wasn't up to lighting up the sky.

I ran the image thru Neat Image and it got rid of the noise. I then ran levels on it to set the white point. Looks pretty good.


Dave
Perspiring photographer.
Visit NorwoodPhotos.comexternal link

  
  LOG IN TO REPLY
Bill ­ Boehme
Enjoy being spanked
Avatar
7,359 posts
Gallery: 39 photos
Best ofs: 1
Likes: 89
Joined Jan 2007
Location: DFW Metro-mess, Texas
     
Jul 16, 2008 02:21 as a reply to  @ Titus213's post |  #5

I was about to say the same thing that Dave said. What you see is noise due to extreme underexposure. In looking for a reason for the underexposure, I noticed that you had the camera set to Manual exposure. I also wondered why you used the flash since it can't help and might hurt the exposure if there is anything in the near foreground that would reflect light back to the camera.


Atmospheric haze in images? Click for Tutorial to Reduce Atmospheric Haze with Photoshop.
Gear List .... Gallery: Woodturner Bill (external link)
Donate to Support POTN Operating Costs

  
  LOG IN TO REPLY
chop4life
THREAD ­ STARTER
Hatchling
5 posts
Joined Jul 2008
     
Jul 16, 2008 08:29 |  #6

bill boehme wrote in post #5919745 (external link)
I was about to say the same thing that Dave said. What you see is noise due to extreme underexposure. I looking for a reason for the underexposure, I noticed that you had the camera set to Manual exposure. I also wondered why you used the flash since it can't help and might hurt the exposure if there is anything in the near foreground that would reflect light back to the camera.

I guess if i didnt use the flash it would not underexpose that much...., thats why i upped the EV a little bit to compensate the darkness, but it wasnt sufficiente enough... next time i should just shoot without the flash.

Thanks.:lol:




  
  LOG IN TO REPLY
Bill ­ Boehme
Enjoy being spanked
Avatar
7,359 posts
Gallery: 39 photos
Best ofs: 1
Likes: 89
Joined Jan 2007
Location: DFW Metro-mess, Texas
     
Jul 16, 2008 13:08 |  #7

chop4life wrote in post #5920922 (external link)
I guess if i didnt use the flash it would not underexpose that much...., thats why i upped the EV a little bit to compensate the darkness, but it wasnt sufficiente enough... next time i should just shoot without the flash.

Thanks.:lol:

BTW, I neglected to say earlier welcome to POTN. I think that you will find this to be a helpful and friendly place to learn and share about photography.

Primarily, I think that the reason for the underexposure was due to using Manual exposure with the the aperture, shutter, and ISO values not adjusted to give the right exposure value. The fact that the flash was used is sort of a minor factor that might affect the outcome if it takes control of the shutter speed in order to have proper X synchronization, but usually will not be a problem.

One important tidbit about built-in flashes is to know their limitations -- they are tiny and generally only good for things like people shots within a range of about 3 to 10 feet from the camera. Also, because of their low energy, they are best when used only as "fill" lighting rather than being used as the primary light source. Finally, it is best if the primary light is not fluorescent because it is a significantly different color than the color of the flash. The problem that this causes is that areas that are in the shadows caused by the flash will be an ugly brownish green and the areas that are in the shadows of the fluorescent light will tend to be blue. However, the fluorescent lights normally do not have the distinct sharp edged shadows that the flash units produce since they are not point sources like the flash produces.

I hope that this answer is not too confusing nor too simplistic since I can tell that you already know a lot about using a camera's functions. Your shot has very good composition which shows that you are creative. Shooting sunsets can be a very challenging undertaking and camera metering systems often fail to respond correctly. One way to get a good exposure of a sunset is to use the shotgun approach -- shoot a number of bracketed shots to see which looks best. Sometimes, what might be considered the best in a technical sense, may not be what you want from a creative perspective. I will confess that I sometimes take dozens of sunset shots to try to get at least a couple good ones. Then I study the "bad" ones to try to see what could be improved.


Atmospheric haze in images? Click for Tutorial to Reduce Atmospheric Haze with Photoshop.
Gear List .... Gallery: Woodturner Bill (external link)
Donate to Support POTN Operating Costs

  
  LOG IN TO REPLY
Titus213
Cream of the Crop
Avatar
19,403 posts
Gallery: 4 photos
Likes: 36
Joined Feb 2005
Location: Kalama, WA USA
     
Jul 16, 2008 13:28 |  #8

I am not sure of the range of options on an A560 but pushing the ISO would have helped with exposure but not noise (generally the higher the ISO the more noise you generate). At f2.6 you are probably at or near your lower limit. That leaves shutter speed and below the 1/60 or so I would use a tripod for the shot.


Dave
Perspiring photographer.
Visit NorwoodPhotos.comexternal link

  
  LOG IN TO REPLY
chop4life
THREAD ­ STARTER
Hatchling
5 posts
Joined Jul 2008
     
Jul 16, 2008 13:44 |  #9

bill boehme wrote in post #5922423 (external link)
BTW, I neglected to say earlier welcome to POTN. I think that you will find this to be a helpful and friendly place to learn and share about photography.

Primarily, I think that the reason for the underexposure was due to using Manual exposure with the the aperture, shutter, and ISO values not adjusted to give the right exposure value. The fact that the flash was used is sort of a minor factor that might affect the outcome if it takes control of the shutter speed in order to have proper X synchronization, but usually will not be a problem.

One important tidbit about built-in flashes is to know their limitations -- they are tiny and generally only good for things like people shots within a range of about 3 to 10 feet from the camera. Also, because of their low energy, they are best when used only as "fill" lighting rather than being used as the primary light source. Finally, it is best if the primary light is not fluorescent because it is a significantly different color than the color of the flash. The problem that this causes is that areas that are in the shadows caused by the flash will be an ugly brownish green and the areas that are in the shadows of the fluorescent light will tend to be blue. However, the fluorescent lights normally do not have the distinct sharp edged shadows that the flash units produce since they are not point sources like the flash produces.

I hope that this answer is not too confusing nor too simplistic since I can tell that you already know a lot about using a camera's functions. Your shot has very good composition which shows that you are creative. Shooting sunsets can be a very challenging undertaking and camera metering systems often fail to respond correctly. One way to get a good exposure of a sunset is to use the shotgun approach -- shoot a number of bracketed shots to see which looks best. Sometimes, what might be considered the best in a technical sense, may not be what you want from a creative perspective. I will confess that I sometimes take dozens of sunset shots to try to get at least a couple good ones. Then I study the "bad" ones to try to see what could be improved.

Thanks for the welcome;), i still have to learn how to use the manual settings on the new camera (i have around 160 shots so far). Your explanation about flash usage is very informative! Like you said the best way to learn is to take a bunch of pictures of the same subject with different settings, and then pick the best one.

Heres a shot that came out better from the batch and is exposed slightly better on the sky.

IMAGE NOT FOUND
HTTP response: NOT FOUND | MIME changed to 'image/png'

less noise



  
  LOG IN TO REPLY
chop4life
THREAD ­ STARTER
Hatchling
5 posts
Joined Jul 2008
     
Jul 16, 2008 13:51 |  #10

Titus213 wrote in post #5922546 (external link)
I am not sure of the range of options on an A560 but pushing the ISO would have helped with exposure but not noise (generally the higher the ISO the more noise you generate). At f2.6 you are probably at or near your lower limit. That leaves shutter speed and below the 1/60 or so I would use a tripod for the shot.

Yes, the A560 does not have manual aperture control. If i upped the ISO to 200, the noise wouldnt be that noticeable anyway, plus i didnt use a tripod(i need to buy one).

Thanks!:)




  
  LOG IN TO REPLY
sponsored links (only for non-logged)

1,225 views & 0 likes for this thread, 5 members have posted to it.
what am i doing wrong here?
FORUMS Photo Sharing & Discussion Critique Corner 
AAA
x 1600
y 1600

Jump to forum...   •  Rules   •  Forums   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset   •  Home

Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!


COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.


POWERED BY AMASS forum software 2.58forum software
version 2.58 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member was a spammer, and banned as such!
2700 guests, 163 members online
Simultaneous users record so far is 15,144, that happened on Nov 22, 2018

Photography-on-the.net Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.