Nikon D810A FX-format Digital SLR Instruction Manual

1. Overview

The Nikon D810A is an FX-format digital single-lens reflex (DSLR) camera specifically designed for astrophotography. It features a 36.3MP CMOS sensor without an Optical Low Pass Filter (OLPF), optimized for capturing nebulae and distant galaxies by employing an optical IR cut filter with specific transmission characteristics in the 656nm range (H-alpha wavelength). This camera offers a broad ISO range from 200 to 12,800, expandable to Lo1 (ISO 32) and Hi2 (ISO 51,200), and includes a virtual preview function for precise focusing and composition during long exposures exceeding 30 seconds.

Key Features:

• 36.3MP FX-format CMOS sensor without an Optical Low Pass Filter (OLPF).
• ISO 200 to 12,800; Lo1 (ISO 32) to Hi2 (ISO 51,200).
• Virtual preview for more accurate focusing and composition for exposure longer than 30 seconds.
• Employs an optical IR cut filter with specific transmission characteristics (characteristics in the 656nm range), enabling the capture of nebulae and distant galaxies that emit H-alpha wavelength in red.

Figure 1: Front view of the Nikon D810A FX-format Digital SLR Camera Body.

2. Setup

2.1 Unboxing and Initial Inspection

Carefully unpack all components from the box. Verify that all items listed below are present and in good condition. If any items are missing or damaged, contact your retailer.

What's in the Box:

• D810A FX-format Digital SLR Camera Body
• EN-EL15 Rechargeable Li-ion Battery
• MH-25a Battery Charger
• DK-17 Eyepiece
• UC-E22 USB Cable
• AN-DC16 Camera Strap
• BF-1B SLR Body Cap
• BM-12 LCD Monitor Cover
• USB Cable Clip
• HDMI Cable Clip

2.2 Charging the Battery

1. Insert the EN-EL15 rechargeable Li-ion battery into the MH-25a battery charger.
2. Plug the charger into a power outlet. The charging lamp will blink to indicate charging is in progress.
3. Charging is complete when the charging lamp stops blinking and remains steadily lit.

2.3 Inserting Memory Cards

The D810A supports one CompactFlash (CF) card and one Secure Digital (SD) card. Ensure memory cards are inserted correctly with the labels facing the correct direction.

1. Open the memory card slot cover.
2. Insert the CF card into the CF slot and the SD card into the SD slot until they click into place.
3. Close the memory card slot cover.

2.4 Attaching a Lens

Align the mounting mark on the lens with the mounting mark on the camera body, then rotate the lens counter-clockwise until it clicks into place.

2.5 Initial Power-On and Basic Settings

After inserting the charged battery and memory cards, turn on the camera using the power switch. Follow the on-screen prompts to set the date, time, and language.

3. Operating the Camera

3.1 Basic Photography Modes

The D810A offers various shooting modes accessible via the mode dial. For astrophotography, Manual (M) mode is often preferred for precise control over exposure settings.

3.2 Focusing

The camera features a 51-point phase detection autofocus system. For astrophotography, manual focus (MF) is typically used to achieve critical focus on stars or distant objects. Utilize the virtual preview function for enhanced accuracy during long exposures.

3.3 Exposure Settings

• ISO Sensitivity: Adjust using the ISO button. Recommended range for astrophotography varies, but the D810A's native ISO 200-12800 (expandable to 32-51200) provides flexibility.
• Shutter Speed: Set in Manual mode. The D810A supports shutter speeds from 1/8000 seconds to 30 seconds, with Bulb and Time modes for longer exposures.
• Aperture: Controlled via the lens aperture ring or camera command dial, depending on the lens.

3.4 Video Recording

The D810A can record video in FHD 1080p resolution, using MPEG-4 and H.264 formats. To start recording, switch to Movie mode and press the dedicated movie-record button.

3.5 Image Playback

Press the playback button to view captured images and videos on the 3.2-inch LCD screen. Use the multi-selector to navigate through your media.

4. Maintenance

4.1 Cleaning the Camera

• Camera Body: Wipe with a soft, dry cloth. Avoid using organic solvents.
• Lens: Use a lens brush to remove dust, then gently wipe with a lens cleaning cloth and lens cleaning fluid.
• Sensor: For sensor cleaning, it is recommended to use the camera's built-in sensor cleaning function or have it professionally cleaned by a Nikon service center.

4.2 Battery Care

To prolong battery life, store the EN-EL15 battery in a cool, dry place when not in use. Avoid fully discharging the battery frequently. Recharge the battery fully before extended storage.

4.3 Storage

When storing the camera for extended periods, remove the battery and memory cards. Store the camera in a dry, well-ventilated area, ideally with a desiccant to prevent mold and mildew.

5. Troubleshooting

5.1 Camera Not Powering On

• Ensure the battery is fully charged and correctly inserted.
• Check that the battery compartment cover is securely closed.
• If using an AC adapter (optional), ensure it is properly connected.

5.2 Images Are Blurry

• Verify that the lens is properly focused. For astrophotography, manual focus is crucial.
• Check the shutter speed. If too slow, camera shake can cause blur. Use a tripod and remote release for long exposures.
• Ensure the lens is clean and free from smudges.

5.3 Memory Card Error

• Ensure the memory card is inserted correctly.
• Try formatting the memory card (note: this will erase all data).
• If the error persists, try a different memory card.

6. Specifications

7. Warranty & Support

Nikon provides a limited warranty for its products. For detailed warranty information, please refer to the warranty card included with your product or visit the official Nikon website. For technical support, service, or to download the full user manual, please visit the Nikon USA Support page.

You can also contact Nikon customer service for assistance with any issues or questions regarding your D810A camera.