#Nikon d3000 iso#
If your images are too dark at ISO 1600 with all the lights on, it sounds off hand like you need to first open up your aperture as wide as it will go, then slow down shutter speed. That's even without a flash and handheld.Īs others are asking for with example photo(s) with EXIF intact, the particular info we need at this point is shutter speed and aperture settings for the shots that didn't turn out. Indoors with all the lights on at ISO 1600, you should be able to get photos. You need to know which are which with the camera you are using - see your user's manual. There are regular focus points, and more accurate cross-type focus points. In focus priority, the shutter won't release until focus has been achieved. In shutter priority the shutter will release even if focus has not been achieved. There are many other considerations, like shutter priority or focus priority. Nikon DSLR cameras have a AF-Assist light for when that is the case (see your user's manual). If a scene is dark, there may not be enough light for the AF system to work properly. That happens the instant before the shutter releases If a smaller lens aperture has been set in the camera for use when making the photo, only after focus has been achieved with the lens wide open is the lens aperture then stopped down (gets smaller) to the aperture setting. To let in as much light as possible the lens aperture is always open during auto focus as wide as it can go. So, the light goes through a lens and a couple of windows.
#Nikon d3000 free#
Phase detection separates the incoming light into 2 images and compares them - see the illustration on the right here - Autofocus - Wikipedia, the free encyclopedia The auto focus module uses Phase Detection to determine when focus has been achieved. That secondary mirror directs the light down, to the auto focus module that is in the bottom of the camera. Half the light goes through that mirror to a smaller secondary mirror that is behind it. What isn't readily apparent is that that mirror is only 50% reflective. When you take a lens off a DLSR camera you see the mirror that directs the light up to the viewfinder. Some of those limitations are noted in the Focus section of all Nikon DSLR User's manuals. "Far from dark" to your eyes is likely pitch black to the camera's auto focus module.Īuto focus is not be all to end all and has limitations.
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