Please see page #60 of the User's Manual.

Please go to our website and download the latest version for ViewNX 2:

Answer Title: Nikon View NX - 2.1.1
Answer Link: http://support.nikonusa.com/app/ans...

No, this remote is not compatible with the D3100. You can use the MC-DC2 remote cord.

Please verify the battery is fully charge and that the camera is not connected to an electrical outlet via the Charging AC Adapter.

Also reset your camera to default:
Go to Setup Menu > Reset Setup Options

No, this remote is not compatible with the D3100. You can use the MC-DC2 remote cord.

All electrical circuits create random noise, prolonged use of the camera's electrical circuit during long exposure images causes a charge to accumulate within each pixel well of the CCD even in the absence of any light. This is called dark current noise or thermally generated charge and can be seen on the image as small multi-coloured pixels. Astronomical photographers need to take long exposure images due to the dark background of the sky at night to gain the correct exposure for their subject matter, special digital capture devices developed specifically for astronomical telescopes sometimes have a "cooled" CCD, this prevents dark current noise.

Nikon DSLRs, although capable of recording long exposure images are designed for general "earthbound" photography, and images with a long shutter duration may start to display multi-colored pixels on the recorded image. This is normal for cameras of this design. Also the warmer the camera is, the more likely it is that this phenomenon will occur as the electrons become more excited by heat. Therefore for long exposures it is recommended to keep the camera as cool as possible, keeping in mind the rated temperature range of the camera. This means not using it for long exposures soon after it has been hand held for long periods. Also, Noise Reduction will work to remove excessive image noise (with ISO 800 or higher), but it may work just as well to remove stars from a starfield, which is why these cameras are not really designed for astrophotography.

Nikon operates factories all across the globe and each operates to the same high standard. While individual cameras are marked with their country of manufacture we can't make a blanket statement about which camera is produced where.

The only product specifications which are made available to the public
may be found in the product user guide, or the specification sheets
posted at www.nikonusa.com.

If the information you requested is not available at either of the
sources mentioned, then the information is not made available to the
public. We regret that many specific technical specifications cannot be
made available to the public as the fall under the umbrella of company
trade secrets.

Yes, they will fit your camera because they have the F mount. However, cameras such as the D3100 do not have a focus motor in it so they require the lens to have the focusing motor – an “AF-S” lens. While these bodies can use a lens with no focus motor (an “AF” lens) you would have to manually turn the focus ring to bring the subject in to sharp focus.

Answer Title: What lenses can I use on the Nikon D3100?
Answer Link: http://support.nikonusa.com/app/ans...

Please see page# 90 of the User's Manual for Present Manual using a Gray card.

We don’t manufacture waterproof housing.

There's a new D-SLR value pack comes with a bag and also the CF-DC1 semi-soft case.

Is the same User's Manual it hasn't been updated. Just different formats.