What Does [R 04] on Nikon D3400 Display Mean

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What Does [R 04] on Nikon D3400 Display Mean?

The Nikon D3400, unveiled in August 2016 (not 2017 as previously mentioned), is a 24.2-megapixel DSLR equipped with an F-mount lens system designed for entry-level photographers and DSLR enthusiasts. It succeeds the Nikon D3300, offering improvements in usability and performance.

This model is available in different configurations across countries, often paired with the AF-P DX NIKKOR 18-55mm f/3.5-5.6G VR lens, which includes Vibration Reduction (VR) for image stabilization, a significant feature for capturing sharp images in various conditions.

The D3400 is offered in black and red, featuring enhancements such as extended battery life, higher ISO capabilities, improved connectivity options, and a lightweight design. It incorporates a high-quality Nikon DX-format CMOS sensor.

A notable feature of this camera is its continuous shooting capability, allowing photographers to capture multiple images quickly. This is particularly useful for capturing motion or critical moments, providing a selection of shots to choose the best from.


The concept of the buffer is crucial for understanding the camera’s continuous shooting capability. The buffer serves as a temporary storage space where the camera holds image data before it’s written to the memory card. This feature significantly enhances shooting efficiency by reducing the wait time between taking photos, ensuring you don’t miss fleeting moments.

What Does [R 04] on Nikon D3400 Display Mean?

[R 04]

The Nikon D3400 features a comprehensive display that informs the photographer about various camera settings and statuses, including the remaining capacity of the buffer.

When preparing to take a photo, if you observe the display or viewfinder, you’ll notice a value indicated within brackets. This value, which appears on the right side of the viewfinder, changes when the shutter button is partially pressed.

Initially, this number represents the available space on the memory card. Upon half-pressing the shutter button, it switches to show how many more images the buffer can hold before reaching capacity.

For example, the code [R 04] signifies space for four more images in the camera’s buffer. Once the buffer is full, the camera will temporarily disable the shutter release until some of the buffered images have been saved to the memory card. However, the camera is designed to keep up with rapid shooting scenarios.


The Nikon D3400 stands out for its user-friendly features and performance, making it an ideal choice for those new to DSLR photography and seasoned hobbyists. The buffer capacity indicator, such as [R 04], is just one of the many features that enhance the shooting experience.

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