Illuminated auto focus frames in the viewfinder

While using the viewfinder, does any warning come in the viewfinder?
Not sure, but if you are shooting in a different mode, it could be there is not enough light, or the camera can't focus.
Using the viewfinder the camera will use a different way to focus as when using the display.
Perhaps the autofocus, does not work correct. Looking through he viewfinder, wait till the AF confirmation mark lights up. (bottom left)
If it won't light up, something is wrong with the AF.

The Nikon D40 in Auto Focus mode will only allow the shutter to operate when the image is in focus. When looking through the viewfinder, the bottom edge provides information relative to what you are looking at. See the image below:



Item 2 is the focus indicator. It must be illuminated to allow the shutter to release. If it is not illuminated, the lens has not been able to determine the correct focus. This can happen when attempting to take a picture in low light conditions. Make sure that the front facing "focus assist lamp" on the camera (between the shutter release and lens) has not been blocked or disabled (Settings Menu # 09) and try again. Many times, you will see and or hear the lens "hunt" for proper focus - the lens will travel from one end of its focus range to the other trying to find focus. When it can't, it stops and prevents the shutter from releasing. You can get around this "unable to focus" issue by changing the position of the switch on the lens to "Manual Focus" mode, detailed below:

If a lens has an "A - M" switch, move it to "M" to manually focus. If the switch says "M/A - M " then leave on M/A (unless you're going to be taking several or more in manual mode), as these lenses may be focused manually at any time in either position. As soon as you tap the shutter button in M/A you return to autofocus.

More advanced lenses, like the 18-200mm, 70-300mm VR and 18-135mm, and any lens with an M/A position, may be focused manually at any time without moving any switches. Leave them in their A or A/M positions.

I hope this helps and good luck!

First make sure that the viewfinder glass is clean. If that is not the problem, it may be that the diopter adjustment has been accidentally changed. On the right side of the viewfinder screen is a very small knob. This adjusts the focus of the viewfinder to your vision. Aim your camera at a stationary object and let the camera auto focus. Look throught the viewfinder and turn this knob one click at a time until the image is clearest to you. Hope this helps.

Right to the viewfinder there is a knob to compensate vision problems, this knob i used for people with prescription glasses should use it if they want to look through the viewfinder without their glasses Move the knob either way until YOU see it in focus. Make sure the dot inside to the right is illuminated which means THE CAMERA is in focus.

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On the EVOLT E-300 it is not a camera that has a live view LCD screen that will allow you to see the image before it is taken. You must take the image with viewfinder only and only use the LCD screen for review purposes. This is how the camera was designed.

there's a little plastic screw right besides the viewfinder, i think it's on the right side. try to adjust sharpness with this screw (it's actually for people with glasses, allowing them to take pictures without wearing the glasses).

Normally the camera measures the distance to the subject using the 3 auto focus frames (left, center and right auto focus frames) in the viewfinder and selects the most appropriate point automatically. You can also select any one of the three points.

There are four focus modes: S-AF (Single auto focus), C-AF (Continuous auto focus), MF (Manual Focus), and S-AF/MF (Simultaneous mode). (SINGLE Auto Focus): Focusing is performed once when the shutter button is pressed halfway. C-AF (CONTINUOUS Auto Focus): The camera repeats focusing while the shutter button is pressed halfway. (MANUAL FOCUS): The function allows you to manually focus on any subject while looking through the viewfinder. SIMULTANEOUS USE of S-AF mode and MF mode: You can fine-adjust focus manually by turning the focus ring after AF is performed in the S-AF mode.

The Eye Piece Cover is the cover that attaches to the viewfinder. The eye piece cover prevents light from entering the viewfinder when shooting with your eye away from the viewfinder.