I have a nikon d80 and some of my images are displaying a black shadow near the bottom of the image, the shadow is in the shape of an arc...i thought it might have been the lens hood, but i tried taking some images without it and the same problem occurred
thanks for your help
I think the shadow could be the shadow of your lens when your using the built in flash. i had the same problem with the 18-135 that came with the camera but if you use a shorter lens (i mainly use a 50mm) or stop using the built in flash you shouldn't have the problem.
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Re: shadow on image
The camera has a main mirror that you see with the lens off and a sub-mirror underneath the main one. It may be the sub-mirror is not flipping up completely when you take a picture. It could be off its hinges or damaged. Any good camera repairman in your area should be able to confirm this
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The up and down arrows on the multi-function button on the back of the camera set the image on the display. With the display on, press the up or down arrow to function through the display settings and the stop on the one you want.
This often happens when you accidentally hit one of the arrow buttons while taking the picture and this changes the display image to the histogram or other display setting.
Simply press the 4-way switch up or down to cycle through the display until you see what you like - be it data on top of the image or the image alone. The 4-way switch is the same one you press left and right to advance pictures on the display.
Unless you are using high-end Nikon Speedlights with camera and flash set for Auto FP High-Speed Sync, your top flash sync shutter speed on the D80 is 1/200 second. The black band you are seeing at faster shutter speeds is because the second curtain of the shutter begins to close before the first curtain reaches the fully-open position (which is when the flash fires). The higher the shutter speed, the shorter the gap between first and second curtains. To get full exposure with flash, there must be an instant when the shutter is fully open -- first curtain completed travel, second curtain not started yet.
"As the speed increases the final image should get lighter" applies to ISO speed. Higher shutter speeds mean less light reaching the sensor, but that's not the cause of the black bands.
Highlight is just the info mode, there are several info modes including Basic file info, Shooting Info and RGB histogram, just press the round controller in the up or down direction to change between them in playback mode. Highlight will flash black anywhere there is pure white in an image. Try resetting the camera by pressing the 2 buttons with green dots (on top of the camera near the shutter release) holding them for a few seconds.
Do the pics show when you press the playback button? Does the menu display? If the display works, then check the menus to see whether image review got turned off. If the display doesn't work, it needs to be repaired/replaced.
To disable those blinking spots, just press the up or down cursor keys at the back of the camera while in playback mode. You will get three different views. One shows the EXIF data (Image data) as an over lay on your photograph. Press the button again to go to histogram mode, with graphs. Press it again to go to a mode where some image data is on the bottom of the display with no blinkies on the image.
Those blinking black spots are called highlights in a photograph. They indicate the areas where your photograph is over-exposed, i.e. where there is too much light and the colours are washed out. It can be a good tool to get a good exposure. Keep clicking with different settings till you get an exposure without those blinking spots.