A:AnswerYes, the AF-S NIKKOR 50mm f/1.8G will be compatible with the Nikon D3400, D700 and D7000. All three of these cameras are compatible with AF-S, G type lenses. You would have to keep in mind that this is a lens made for Full Frame Cameras, so on the D3400 and D7000, which are Crop Sensor cameras, there will be a 1.5x crop factor with this lens. Meaning the AF-S NIKKOR 50mm f/1.8G will act as a 75mm lens on the D3400, D7000 and all other crop sensor cameras. Since the D700 is a Full Frame camera, there will be no crop factor and the AF-S NIKKOR 50mm f/1.8G will be 50mm.
A:AnswerBoth the Nikon AF-S DX NIKKOR 35mm f/1.8G and the Nikon AF-S NIKKOR 50mm f/1.8G are lightweight lenses that provide vividly-sharp videos and images with a bokeh effect. Some differences to note are the minimum aperture and minimum focus distance they each offer. The 35mm f/1.8G lens allows .98 feet for minimum focus distance and the 50mm f/1.8G lens lets you have 1.48 feet. Minimum aperture on the AF-S 35mm is f/22 while the AF-S 50mm minimum aperture is f/16. Either lens would be a great addition to your growing camera bag and help you on your vlogging journey. To learn more about how focal length affects your image or video check out the following link: http://www.nikonusa.com/en/learn-and-explore/a/tips-and-techniques/understanding-focal-length.html
A:AnswerAs the D3000 lacks an autofocus motor, it will require lenses that have a built-in focus motor. Nikon denotes these type of lenses with an AF-S, for Nikon's Silent Wave Focus Motor. The 50mm f/1.8G lens is an AF-S type lens with a built-in focus motor. It will be compatible, with autofocus, with your D3000.
A:AnswerYes... will work fine, providing 75mm equivalent field of view on your camera, in that it is a "crop" (DX format) camera. That's a near ideal range for portraits, as is the f1.8 aperture. To go a bit wider and to get to the true 50mm view on your D40, pick up a 35mm f1.8 Nikon lens also. Inexpensive at $200, and nice image quality.
A:AnswerYes but, only with an adapter. Nikon has released a generation 2 version of the adapture assuring that autofocus works appropriately with it. Priced around $249 at best buy.
