Question about Canon PowerShot SX100 IS Digital Camera

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Photo quality photographs become grainy and whitish when I use zoom specially in case of birds.

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It will be grainy a bit specially in digital zoom and even in optical zoom to the full level it might become grainy as camera is unable to absorb all the light from distant object......

Posted on Jun 01, 2008

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What is the difference in the optical and digital zoom?


Hi,

Find the difference below

Digital Zoom

1. Digital zoom is a part of digital cameras, and camcorders, which helps to crop the entire image, and then digitally enlarge the size of the viewfinder of the portion that is needed to zoom in on
2. Digital zoom crops the image down to a centred area with the same ratio as the original, and also interpolating the result back up to the pixel dimensions of the original. this method involves cropping, hence the resolution and quality is reduced
3. Digital zoom, crops a portion of the image and then enlarges it back to size. And due to this, image quality is reduced in comparison with the original one.
4. Using the digital zoom allows the user to get closer to the subject when the photographer wants to be discreet about taking pictures, like taking a picture of a person in a graduation ceremony.

Optical Zoom

1. While taking a picture using a Camera to want to get a close shot of the subject without moving physically closer, photographers use the optical zoom.
2. The optical zoom ratio of a digital camera measures how much the lens can actually zoom in to make subjects appear closer. Optical zoom, enlarges a picture while keeping the resolution and sharpness of the picture high.

3. There is no relation between optical zoom and the resolution of the photo, as optical zoom only enlarges the whole image or the subject to a certain range. So image quality only depends upon the mega pixel (MP) of the camera

4. Optical zoom is very useful, while taking a picture of a landscape, or to get a closer view of a subject, without reducing the quality of the entire image, like taking a picture of a Rainbow in the sky.
Regards,
Ron


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Jul 01, 2011 | Nikon Cameras

1 Answer

I have Nikon Coolpix S4 digital camera. Lcd screen is ok as I can see very clearly all stored images and vedio. But when I want to take photograph the screen become too dem and stores very-very dem images....


It sounds like a problem with the lighting. Digital cameras like that aren't designed for ultra low light performance, so pictures will come out very dark and grainy. It's not a problem with the camera, it is merely a shortcoming.

Jun 28, 2010 | Cameras

1 Answer

I am having trouble photographing birds. Do I use the telephoto lens or the wide angle lens? I also have a macro lens for my Canon EOS 400D SLR Also what settings do I take them at. I have a tripod but the...


Use the telephoto lens.. wide angle will tend to distort the image and provide too much detail( distraction) around the object of interest. Bird pictures become more interesting when they are mainly of the bird. So when you look through the lens, zoom up to the bird to the point where you have it nicely framed with none of its parts outside of the frame.
Capture the whole image.

Wide angle lens is mainly used for scenery or where you want to take a group photo or panorama.

Please rate my help++++Thanks for using FIXYA

Nov 29, 2009 | Canon EOS 400D / Rebel XTi Digital Camera

2 Answers

Very grainy pictures indoors at night


If you can adjust the ISO sensitivity to a lower number then the graininess will be reduced.

However, by reducing the ISO, you will need a slower shutter speed and a larger aperture. A tripod, table or other support may be necessary.

The "noise reduction" setting on the camera can also be adjusted a step up.

Taking pictures at full resolution and fine compression will also help.
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Overall, at least try lowering the ISO, and using the flash brighter.


Jul 01, 2008 | Panasonic Lumix DMC-TZ3 Digital Camera

1 Answer

Zooming with Olympus Stylus 820


Hey missy0528,
There are a few reasons your images might be grainy, one of which is your image quality is set to low. I would always have the camera set to the highest resolution possible, because you can always reduce the size of an image but you can never make it bigger. Another cause of grainy images in digital cameras is the sensitivity of the camera (ISO) is set to high. Since you are only seeing grainy images when you use the zoom the reason for the grainy images is most likely do to using the digital zoom. All a digital zoom does is crop the image much as you can do in some computer applications, and by doing this you greatly reduce your image quality. I would never use a digital zoom. Your camera has a 5x optical zoom and a 5.6x digital zoom. I would only use the optical zoom. I hope this helps!

Sincerely,
Allan
Go Ahead. Use Us.

Jun 09, 2008 | Olympus Stylus 820 Digital Camera

1 Answer

Grainy Pictures


This camera with the ISO set to 100 ASA, the electronic zoom turned off, and with the mode on Automatic "A", should take very good pictures.

I would give the camera to the manufacture for service, and include some samples of what the results are. It would be recomended to do this while the camera is under warranty.


Jerry G.

Apr 27, 2008 | Olympus Stylus 820 Digital Camera

1 Answer

Images appear to be very noisy or grainy


When DIGITAL ZOOM is set to ON in the MODE MENU, the lens can zoom into the Digital Zoom portion of the zoom by pressing the zoom (T) button. When you see the zoom indicator on LCD enter the red portion (towards Tele), the image in the viewfinder will become closer. However, since the D-630 is using the digital portion of the zoom, the lens doesn't physically zoom, it takes the existing image and enlarges your image using an electronic program. This can result in a “noisy” or “grainy” look to the image. This is normal when using the DIGITAL ZOOM. The DIGITAL ZOOM can be turned OFF to prevent you from using this portion of the zoom. Locate DIGITAL ZOOM in the Mode Menu and set it to OFF.

Sep 01, 2005 | Olympus D-630 Zoom Digital Camera

1 Answer

Noisy or grainy images


When you press the “T” zoom button, the image in the viewfinder will become closer. However, since the D-435 uses a digital zoom, the lens doesn't physically zoom, it takes the existing image and enlarges your image using an electronic program. This can result in a “noisy” or “grainy” look to the image, which is normal when using the digital zoom.

Aug 31, 2005 | Olympus Camedia D-435 Digital Camera

1 Answer

Noisy or grainy images


When you press the “T” zoom button, the image in the viewfinder will become closer. However, since the D-435 uses a digital zoom, the lens doesn't physically zoom, it takes the existing image and enlarges your image using an electronic program. This can result in a “noisy” or “grainy” look to the image. This normal when using the digital zoom.

Aug 31, 2005 | Olympus Camedia D-425 / C-170 Digital...

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