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12/19/2004 05:56:29 PM · #1 |
Hi,
I took a stack of photos today and they have this really grainy look when i zoom at 100%. They are ok at 25% zoom.
Take a look at this cropped jpeg image. Sorry its about 862k but i wanted to keep it as close to the original's quality as possible so you could see the effect im talking about. I think its particularly noticable on the peoples skin. Whats causing this problem?
I have done a 'save to web' on the image to reduce the file size for your viewing. Im running photoshop 7, 19" sony xblack screen, 1280x1024 resolution if that helps. Camera: sony dscf828
camera settings
image link
Thanks. |
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12/19/2004 06:03:36 PM · #2 |
| An ISO of 200 is pushing the F828 limits and so some grain is expected. As you have noted when you resize it does not look too bad. Also the grain will not be that much of an issue when printing. You can use any number of noise removing plugins to reduce the noise, but don't go too far with them. |
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12/19/2004 06:10:49 PM · #3 |
| I was going to say the same (about pushing the ISO Limits). On my Canon Powershot Pro1 ISO 200 would procude about the same results. I did not shoot much at ISO 200 because of that. Looks like you used a tripod because the pic is sharp at that shutter speed, if your using a pod just kick the ISO back down. I shot 50 and 100 (mostly 50) all the time with my Pro1 (low light on a tripod) and the pictures were fine. |
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12/19/2004 06:22:47 PM · #4 |
| That looks completely normal for an 828 at ISO 200. Remember, the full size image, if looked at at 100% on your monitor, is equivalent to a print that's close to 4 feet by 3 feet. No one looks at a photo that big, that close. |
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12/19/2004 06:42:44 PM · #5 |
Originally posted by Zal:
That looks completely normal for an 828 at ISO 200. Remember, the full size image, if looked at at 100% on your monitor, is equivalent to a print that's close to 4 feet by 3 feet. No one looks at a photo that big, that close. |
Under normal conditions, this would be true. But if you ever try to sell an image to a stock photography company, they will usually inspect it carefully at 100%. I didn't realize how noisy my shots were until I tried to sell some of them. :-) But for everyday use, this noise level should be fine.
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12/19/2004 06:50:52 PM · #6 |
What was your lighting like. I know my sony had to have a lot of light to get rid of most the grain. Using a tripod and lots of light helps.
Sometimes you have to learn what your camera likes and dislikes and it may not always be what you like. Just a thought. |
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12/19/2004 07:15:58 PM · #7 |
are you using digital zoom?
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12/20/2004 04:02:47 AM · #8 |
wow thank you for all your replies.
Sounds like this is fairly normal for a camera in that range. Im not using digital zoom at all - i read its better to avoid it. The light of course varied over the day and this shot was taken around 11 am i think in a fairly bright modern reception area. I guess most of the light was from the buildings own artificial light though. I didnt use any additional lighting myself, because im new to photography, and i had to be mobile enough to move from one location to the other quickly and get shots of the subjects quickly before they moved on and i needed to get in amongst the crowds. For the same reason i didnt use a tripod but found many pictures slightly blurred so i need to perfect my still-hand camera holding.
Interested in your comment Zal "is equivalent to a print that's close to 4 feet by 3 feet" IT IS?! Wow i had no idea. What level of zoom should i generally be viewing my photos at then for a more realistic size? Havent changed many settings myself yet so would be interested to try your tripod and iso 50 or 100 idea next time AWPollard. Although changing the settings on the move in different areas and getting good shots sounds challenging.
Thanks for all your thoughts and suggestions everyone. Really appreciate it.
Message edited by author 2004-12-20 04:05:08. |
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12/20/2004 09:35:42 AM · #9 |
Originally posted by peter08:
Interested in your comment Zal "is equivalent to a print that's close to 4 feet by 3 feet" IT IS?! Wow i had no idea. What level of zoom should i generally be viewing my photos at then for a more realistic size? |
I'm running 1280x960 at home, and I normally view my 828 shots at 25%. I zoom in as appropriate for editiing, but depending on how much I crop, 25-33% zoom pretty much fills my screen. In printed shots, noise is basically invisible until you get to a very big size. I have a shot printed 8x10 that was taken at ISO 800--the noise is visible, but it in no way spoils the shot.
YMMV. |
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12/21/2004 08:30:47 AM · #10 |
| Thanks Zal. I have a much better idea of whats going on now. I'll be looking out for your f828 photos to compare with mine! |
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