Meteor SLR! Nikon released D8 10A SLR.

Meteor SLR! Nikon released D8 10A SLR.

2065438+On February 10, 2005, Nikon released a special edition D8 10A for taking photos of astronomy and nebulae. The appearance of the machine is exactly the same as that of the ordinary version D8 10, and the configuration is similar. It uses about 36.35 million effective pixels, FX format CMOS image sensor, no low-pass filter, and the latest image processor EXPEED4. It is a Nikon digital SLR model with excellent image quality and super high resolution. D8 10A is planned to be listed in May 201May.

In order to take better pictures of astronomical nebulae, the sensor of this machine can restore the beautiful red color of H-rays emitted by nebulae through the filter, which is difficult to achieve with the ordinary version of D8 10 SLR. Compared with D8 10A sensor, the transmittance of optical filter in front of D8 10A sensor is about 4 times higher than that of d8 10, so it can clearly and realistically restore the red color of H rays from nebulae and galaxies.

In order to make astrophotography more convenient, D8 10A has made many improvements on the basis of D8 10: long exposure manual (M) mode is added to support exposure for up to 900 seconds, and the live view preview function is easier to focus and compose (when the specified exposure time exceeds 30 seconds, the preview when shooting at the shutter speed of 30 seconds will be displayed). At the same time, D8 10A has inherited many functions of D8 10 that are helpful to astronomical photography: the function of enlarging the camera display screen to 23 times to achieve precise focusing when taking a picture instantly, the electronic front curtain shutter that suppresses mechanical vibration, and the continuous shooting function that can create beautiful star-track photos.

In addition, ordinary cinematographers should pay attention to: D8 10A is a digital SLR camera specially designed for celestial photography. When shooting or shooting a general object with high reflection on near infrared wavelength under a large number of light sources with near infrared wavelength, the obtained image may be red in tone. This model is not recommended for ordinary photography because proper color reproduction cannot be obtained.

Main features of Nikon D8 10A astrophotography:

1. Electronic front curtain shutter can effectively suppress the troublesome internal mechanical vibration of celestial photography, especially when shooting the surface of the moon.

2. When the shutter speed is specified as 4 seconds or more, the number of continuous shooting sheets is only limited by the memory card capacity and battery power. Because images can be captured quickly and continuously, a smooth satellite orbit composite image can be created using the taken photos.

3. The advanced performance of the lithium-ion rechargeable battery EN-EL 15 can ensure that a large number of images can be taken for a long time. The camera also adopts energy-saving design, and can take up to about 3860 photos * when the battery is fully charged.

4. Nikon integrated dust removal system, with image sensor dust removal function, makes the optical filter vibrate at multiple frequencies, thus removing dust and foreign objects that may be attached.

Other functions of Nikon D8 10A:

Because the usual digital SLR cameras are designed for portrait and landscape photography, in order to optimize the color reproduction of such scenes, the transmittance near the red visible light range is suppressed. Therefore, when these cameras are used to take images with H-rays from nebulae and galaxies, the colors of the photos are often light. In order to solve this problem, D8 10A adopts an infrared cut-off filter in front of the image sensor, which makes the H-ray transmittance about 4 times higher than D8 10. In this way, astronomical photos can be obtained that make red-emitting nebulae and galaxies appear bright red.

In addition to the existing P/S/A/M exposure mode, D8 10A also adds a long exposure manual (M) mode. The difference between the long exposure manual mode and the standard manual mode is that when the shutter speed is 4 seconds or more, the maximum number of shots in continuous shooting is cancelled. Shutter speed can be set to 4, 5, 8, 10, 15, 20, 30, 60, 120, 180, 240, 300, 600, 900 seconds, door b or remote control door B. Because the selected shutter speed represents the actual exposure time, it is convenient to calculate the total exposure time and create a composite image later.

Display the information needed for shooting on the viewfinder, so that the line of sight does not need to leave the subject when composing. In addition to the shutter speed and aperture value, you can also display a virtual level that helps keep the camera level (the red light stays on after the function is turned on). Features like this allow users to focus more on shooting.

When the exposure time of Japanese photography exceeds 30 seconds, a preview with a shutter speed of 30 seconds will be displayed on the live view display (the preview exposure is different from the actual image). In addition, like D8 10, the live view display can be enlarged to 23 times, making it easy to focus accurately.

D8 10A, like D8 10 and Nikon FX CMOS image sensor, has no low-pass filter and the effective pixel is about 36.35 million. The excellent image quality of Nikon digital SLR camera is combined with the latest image processor EXPEED4 to realize sharp and bright colors and delicate and smooth stereoscopic rendering. D8 10A supports a wide standard sensitivity range from ISO200 to ISO 12800, and also supports an extended range as low as ISO 100(Lo 1) and as high as ISO5 1200(Hi2). Under each sensitivity setting, a wide dynamic range is maintained and the noise is effectively suppressed. When shooting a subject with extremely low contrast with high sensitivity or long exposure, it can also present rich details of about 36.35 million effective pixels.