I have had bad results using this lens on full zoom - the image looks fine through the viewfinder but the picture is very grainy and the colours are poor and lack quality - the weather conditions were not brilliant - very overcast - can i do something to improve the pictures - camera nikon d3100

A rangefinder is a camera that has a rangefinder mechanism. This is a device that measures subject distance. Through this device, you see two images. When the two images coincide through moving the dial, the correct distance is displayed. On older cameras, this was a separate device and one must transfer this to the lens.
Now they are built into the viewfinder. You have different viewfinders for different focal lengths (zoom lenses are difficult, as a result).
A viewfinder is what the photographer looks through to compose, and in many cases to focus, the picture. Most viewfinders are separate, and suffer parallax, while the single-lens reflex camera lets the viewfinder use the main optical system.

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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Hello, yes a few suggestions "grainy" could be from an auto ISO setting the sensor speed high as in possibly ISO 400 even 800 or higher you get the pictures but it's grainy. On pocket point and shooters this is most often the case in full automatic modes and on your camera it's called "Intelligent ISO Mode" You should consult your manual and select a more user selectable ISO speed manually. Another feature with your camera is image stabilization this you can turn on or off preferably off when the camera is mounted to a tripod. Okay for the blurry part on the zoom the quickest way to explain this is every tiny movement you make holding the camera is magnified 10 times, this is where the image stabilizing feature would be handy. Jennifer in my younger days I could hold a 35mm camera with a 300mm lens steady at 1/60 of a second now I use only a 200mm lens with image stabilization "on" to get the same results. What you have is a full time auto everything camera if it's working for you it doesn't matter if it's 3.5 years old. You are still working with a 7.2meg camera with a print capability of 11x14. hope this answered some of your questions.

The viewfinder and the picture lens are totally separate. If it looks fuzzy, and then comes out fuzzy, the capture screen inside needs cleaned. The main lens and viewfinder lenses should be cleaned too.
Get estimates before you say yes to the work. It might be cheaper to buy another camera, unless you can do the work yourself.

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.

This is not going to get repaired at a sensible price. Check out Kodak Technical support but I think you are looking at replacing the camera

Sounds like you may have a problem in the auto iris curcuit or the auto settings was switched to manual and the lens is closed. Check first to see that the lens is setup in auto mode. If it is then the auto iris as i said before is bad or stuck closed unless the small caps in that curcuit went bad as they always do after a few years. Good Luck

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.

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.

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.