 Chris G. Corke |
Grainy pics Hello out there in photo land, I've got a Canon power shot A570 IS ,(also I'm new to photography) and most of my pics that are taken more than 10' away have turned out grainy.I had the camera set on automatic ,which I've recently been told isn't all that accurate,these shots were taken outdoors with sun and overcast skies.What causes grain ,and is there a ball park setting I should try, using other settings on the camera? Thank You
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Alan N. Marcus |
Hi Chris, Welcome to the world of photography. You camera is loaded with resolution. You have a Canon PowerShot A470 it sports 7.1 Mega Pixels. That’s more than enough to make good pictures. So the graininess you see is all about the proper set-up of your camera. First allow me to advise spending a good hour or two reading the camera manual, this won’t do harm. The grain you are seeing comes from the fact that a digital can be used for many things and thus it has setting allowing different resolutions. Likely your camera is set on a low resolution. That will elevate the number of pictures your memory card can hold but the coinsurance is you will see grain. Resolution is a setting you can adjust. You can tell the camera to use all of it’s 71.1 Mega Pixels to take a picture. This setting is called Super Fine Resolution. If you choose this setting, likely your grain problem will be resolved. Every setting has its pluses and minuses. Setting the camera to Super Fine reduces the chances you will see grain however this setting reduces the number of pictures the memory card can hold. The memory card that came with your camera is likely 16M. This is a small amount of memory, just barely able to hold 6 pictures at the super fine setting. I advise saving your pennies and buying a memory card that is 1 gigabyte. These larger memory cards will serve you better and the price has dropped. Likely your camera is set to a below normal resolution. Study the camera so you can experiment with different settings. Alan Marcus
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Chris G. Corke |
Thank you very much Alan , I'll take your advise and check through the settings ,I had the salesperson at the local photo lab tell em the same thing about the resolution ,I'll invest in a gig memory card as well thanks again .I'll let you know how my next batch of pics. turns out. Thanks again Chris
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arniehorwitzphotography.com - Arnie Horwitz Contact Arnie Horwitz Arnie Horwitz's Gallery |
Hi Chris, Another source of graininess can be from noise. This is especially evident in lower light areas such as shade and when the overall lighting is lower as it would be on a cloudy day. I have had 2 Canon compacts (G2 and A640) and although they are very good cameras, they (like other compacts) tend to have higher levels of noise at higher ISO settings (generally at and above 200). When you use your camera on full auto mode, it will choose the combination that it thinks will give the best outcome which can include automatically increasing the ISO. I recommend using the camera on Program or Shutter priority (Tv) modes and manually choosing a lower ISO like 100. There are of course situations where you may want to increase the ISO. You then just have to be aware of the potential for noise and deal with it in editing with PS (using noise reduction which can help somewhat). Hope this also helps. Arnie Horwitz
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