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A630: Constant Grainy Pictures

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Thread started 01 Aug 2007 (Wednesday) 18:30   
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Silver ­ Sandwhich
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I have the 8 megapixel Canon Powershot A630. If I ever take a picture without the flash, it comes out really grainy like a web cam and looks horrible. It also happens with the flash like when I put the camera on my tripod and use the timer to take a picture of myself.

This also happened with some pictures I took while outside in complete sunlight.

Post #1, Aug 01, 2007 18:30:55




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Jon
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Post some examples? What mode are you using the camera in?

Post #2, Aug 01, 2007 19:19:15


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Silver ­ Sandwhich
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Auto with Auto Flash and Red Eye Reduction.

Post #3, Aug 01, 2007 19:42:25




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jipli
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Noise usually appears because of high ISO settings, the lower the ISO the finer the picture will be and all the way along to the highest ISO which produces a lot of grain...

Post #4, Aug 01, 2007 19:57:55 as a reply to Silver Sandwhich's post 15 minutes earlier.


Canon Powershot A550, just starting

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Silver ­ Sandwhich
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Ah, I did have it on high ISO. I just saw it made the viewfinder brighter. But I've actually put that back to auto and still get grainy pictures.

I also have it set on superfine and M3 size.

Post #5, Aug 01, 2007 20:04:22




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rpolitsr
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L Superfine will be better. You can do post processing on noise issues easily.
Low ISO helps, but only pictures in good light will be reasonably free of noise.

Post #6, Aug 02, 2007 12:58:18


rafael
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Silver ­ Sandwhich
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Even on Auto ISO, L, and with the flash in a lit room, they still come out super grainy. It's like a really large web cam shot. I tired super fine and normal, both came out like crap.

My A40 (or something) never did this.

Post #7, Aug 02, 2007 19:32:44




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Jon
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Auto often uses the higher ISO settings to keep the shutter speed up. What was the EXIF on these? And did you do any post-processing on them? If they were underexposed, noise is more of a problem.

Post #8, Aug 02, 2007 19:40:26


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Silver ­ Sandwhich
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I don't know what EXIF is, so I guess just default. I resize my pics to 800 x 600 (Wish the camera had this setting!) when I'm actually going to share them, but it really doesn't help.

Macromedia Fireworks is my image editing program of choice, but I can't find a way to un-noise the pics.

I guess auto just sucks balls.

Post #9, Aug 02, 2007 19:52:11




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Jon
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EXIF is the shooting information - if you open the file in Zoom Broser and choose "Properties" it'll tell you the aperture, shutter speed, metering mode, ISO, lens focal length, camera, and all sorts of other useful info.

Post #10, Aug 02, 2007 19:54:33


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Silver ­ Sandwhich
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100-0667
Auto ISO
1/60
F2.8
AWB
3.56MB
3264X2448

Post #11, Aug 02, 2007 20:08:10




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Jon
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Silver Sandwhich wrote in post #3658897external link
100-0667
Auto ISO
1/60
F2.8
AWB
3.56MB
3264X2448

Which picture?

Post #12, Aug 03, 2007 08:58:10


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ddphoto
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Here are some pics taken with an A630 by my daughter, in some cases there's grain but is almost always due to low light or movement.

IMAGE: http://farm2.static.flickr.com/1370/985797761_acfdcef245_o.jpg

IMAGE: http://farm2.static.flickr.com/1348/986647164_088edf52da_o.jpg

IMAGE: http://farm2.static.flickr.com/1357/985794953_122c99895b_o.jpg

IMAGE: http://farm2.static.flickr.com/1353/985795557_9430e4ff14_o.jpg

She's using the camera on Manual mode and adjusting ISO as needed, usually sticks in 100.

Post #13, Aug 03, 2007 09:24:17


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Silver ­ Sandwhich
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Jon wrote in post #3661739external link
Which picture?

Sorry, the one in post 7.

It angers me that grain comes standard with this thing. I thought I was buying a really good camera...

Post #14, Aug 03, 2007 20:36:54




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RadAL
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on the post with pictures, aside from the first picture (which was taken almost at night and probably handheld without flash...), the other pictures don't look grainy? Don't expect handheld awesome dark pictures (unless you have a super steady hand and take off review time or have a tripod).... without some stability to the camera.

Also, how good do you think you are with cameras? newbie, amateur, semi proffessional, etc?

Post #15, Aug 03, 2007 22:57:25


Equipment: Canon PowerShot A650IS (semi retired) and Canon Powershot G10 (primary) and Rebel XT 350D w/18-55mm kit lens and Quanterey 18-200mm-- www.youtube.com/alexan​der1485external link (has links to some of my pictures on the main page)

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