- A helpful Guide Mode is available to aid in becoming acquainted with the D3400 through a series of step-by-step tutorials.
- A range of Special Effects are available to creatively refine the look of imagery in-camera, and include Night Vision, Super Vivid, Pop, Photo Illustration, Toy Camera Effect, Miniature Effect, Selective Color, Silhouette, High Key, and Low Key.
- The included EN-EL14a lithium-ion battery provides approximately 1200 shots per charge.
- Picture Control modes can be directly accessed via a dedicated button and allow you to set predefined looks to imagery in-camera, and include Landscape, Monochrome, Neutral, Portrait, Standard, Vivid, and user-customizable settings.
- Active D-Lighting helps to preserve both highlight and shadow details when working in contrast-rich scenarios, such as backlit lighting. Utilizing the EXPEED 4 processor's power, a more controlled image will be produced with brightness values closer to how they are naturally seen. This mode is suitable for working with moving subjects.
- Scene Auto Selector is an automatic mode that intelligently identifies your subject and shooting scenario, selects a proper Scene Mode to apply, and adjusts exposure settings to best render the scene at hand.
- Scene Modes: Auto, Auto (Flash Off), Child, Close-up, Landscape, Night Portrait, Portrait, and Sports.
- In-Camera Image Editing features: Color Outline, Color Sketch, D-Lighting, Distortion Control, Filter Effects, Fisheye, Image Overlay, Miniature Effect, Monochrome, NEF (RAW) Processing, Painting, Perspective Control, Photo Illustration, Quick Retouch, Red-Eye Correction, Resize, Selective Color, Straighten, and Trim.
- Language support: Arabic, Bengali, Brazilian Portuguese, Chinese (Simplified and Traditional), Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Marathi, Norwegian, Persian, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, and Vietnamese.