18mm, f/8. 55mm, f/8. The Nikon D3100 comes with a Nikkor AF-S DX 18-55mm f/3.5-5.6G VR (Vibration Reduction) kit lens, which has a typical optical zoom ratio of about 3x. Details are pretty good
As mentioned above, the D3400 can shoot 1080 and 720 video with framerates from 24fps to 60fps. Both 1080p and 720p are considered HD video and are good resolutions for web video. Both are much smaller than the 4K, 5K, or 8K that some other cameras can shoot. On the D3400, “frame size” is used rather than “resolution.”.
No you can not, there is no mic input in the D3100, that would be in the D7000. You could though use an external recording device like the Zoom H4N and sync in post production, which instead of a mini mic input you get pro XLR with many other controls and features than what a camera would have. Also if you have an assitant the Zoom would allow Using the Live View feature on the D3100 is relatively easy: Switching to Live View mode: Move the lever on the Live View switch to the right and release it. When you do this, you hear a click as the internal mirror that normally sends the image from the lens to the viewfinder flips up, allowing the Live View preview to start. At ISO 3200 the Nikon D3100 seems to add some artifacts here and there and the shadow detail seems to be lost more. However, the amount of noise is about the same on both cameras, which is good news for the Nikon D3100. ISO 6400 looks poor on both, with lots of noise and loss of detail/sharpness. And ISO 12800 is even worse, pretty much
One key advantage of the Nikon D3300 is its higher megapixel count, boasting 24.2 megapixels compared to the D3100’s 14.8 megapixels. This allows the D3300 to capture more detailed and sharper images. Additionally, the D3300 has a faster shooting speed of 5 frames per second, while the D3100 only manages 3 frames per second.
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is nikon d3100 good for video