Nikon D810A Shutter Life
An astrophotography variant with a special infrared filter capable of deep red / near infrared and with special software tweaks like long-exposure modes up to 15 minutes, virtual horizon indicator and a special Astro Noise Reduction software was announced February 10, 2015. The D810A's IR filter is optimized for H-alpha (Hα) red tones, resulting in four times greater sensitivity to the 656 nm wavelength than the D810. In comparison, Canon's astrophotography DSLRs 20Da and 60Da Hα sensitivity was 2.5 times and 3 times (respectively) more than the standard 20D / 60D. The D810A additionally has 1.39 stops advantage due to the larger image sensor format – resulting in better than 2 stops sensitivity advantage giving over four times faster exposure times compared to the Canon 20Da/60Da. Although the D810A can be used for normal photography, due to the deep red / near infrared sensitivity the in-camera white balance may fail in case of fluorescent light or difficult cases with very strong infrared light – requiring an external infrared filter. Nikon published an D810A astrophotography guide that recommends live view focusing with 23× enlarged selected areas and a gallery showing the mostly small effects to the color reproduction in "normal" photos. A review concludes that especially the D810A long exposure noise is superior compared to the D800E and other Nikon fullframes, and shows effects of the increased H-alpha sensitivity. Color balance of "normal" photos seems mostly correct, except comparatively hotter objects with strong infrared radiation and a bit more purple in sunsets.
Frequently Asked Questions
- What's this histogram shows?
- This shutter count histogram shows how many known camera bodies have reached some particular shutter count values. On vertical axis there are shutter count ranges and on horizontal there are body counts within them.
- Where's this data coming from?
- This shutter count histogram was created with data acquired via the ShutterCheck application. All data points were collected in an automated way from users who have opted-in into sharing of anonymous shutter life data of their cameras.
- What's the purpose of this graph?
- This shutter count histogram was created with the desire to give people better estimates of shutter life of their cameras beyond dry numbers of shutter rated lifespan. As you probably heard of, most cameras usually live longer than guaranteed by their vendor, sometimes even much longer. That’s why I collected here a real-world shutter count data, so you be able to make more informed decisions about your camera gear.