Astrophotography is a discipline dedicated to photographing the night sky in all its splendor. For this exercise to be successful, there are a series of environmental conditions, equipment demands and photographic operational- plus post-production techniques that we will explore in broad lines in in this arti
Category: "Practical guide"
The Crayford telescope focuser design – developed in 1971 by John Wall and named after the Crayford Manor House astronomical society – has a number of important advantages over rack-and pinion and can be home built out of wood by almost anybody with a bit of patience and the right tools at hand. I designed this focuser specifically to carry the weight of a Nikon D7100 camera on prime focus (± 800 gr), which is considerably heavier than even the largest eyepieces. So far, it is holding up admirably.
It's been already more than five years since I wrote this article (in Spanish) on autofocus and although in many areas the innovation of DSLR’s has slowed down some, autofocus systems are still making unimagined jumps. In this article we review the 51-point system, which was introduced in late 2007 in the Nikon D3, D300 and the evolved version of which is used in the D7100, D810 and D4S (Advanced Multi-CAM 3500).
Fill-in flash is useful in many situations, even if we only have the built-in flash at hand. Even though an external flash offers a wide range of additional options and is recommended to achieve more professional results, the built-in flash is useful in many situations and can be slightly more versatile if we either make or buy an accessory called flash diffuser, which has the objective to “soften” the light.
If you want to quickly assert if your lenses are focusing properly, my friend Carsten recommends the “Newspaper Test”. This works very well, he says, because we are so used to letters that we can judge “readability” much better than a certain degree of blur. It is also the method of choice to test longer lenses at different distances, because for that both the ruler and the domino test are a bit tricky; it may be quite difficult to judge the results at a focusing distance of – say – ten meters. If you want to quick assert
Now that even the most modest Nikons feature 24 Mp. sensors, optical quality and lens performance are increasingly coming under pressure. It is no coincidence that many of the latest Nikon mid-range and top-of-the line cameras include a feature called “AF Fine Tuning” which allows users to adjust the auto focus of their sample of a particular lens to their particular camera. Now that even the most modest Nikons feature 24 Mp. sensors, optical quality and lens performance are increasingly coming under pressure. It is no coincidence that many of the latest Nikon mid-range and top-of-the line cameras include a…
I have been photographing all my life, and even if I did shoot and edit quite a few Hi-8 videos in the early nineties, digital video is an entirely new territory for me. Meaning: I need to get a whole bunch of questions answered, so not to turn my first DSLR video into a total bummer. I found this article on Nikon Cinema very helpful, and so might you.