More UV flash and torch tests

August 16th, 2016

In this post I'll cover two main points:

  1. Does adding the protective plastic over the flash head when performing a full spectrum modification to the Vivitar 283 flash reduce its UV output compared to having it bare?
  2. How well does the Convoy S2+ Nichia LED 365nm UV torch / flashlight work for reflected UV and UV induced visible fluorescence photography?

And also compare the difference between flash and the torch for reflected UV photography.

More UV flash and torch tests

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An hour in Gwangju

August 10th, 2016

I haven't posted anything here in quite a while. I don't really have anything interesting to write about at the moment, however to break the silence I thought I might as well post a few photos.

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Sigma 24mm f2.8 macro & Nikon Series E 100mm f2.8 lenses mini-reviews

April 25th, 2016

I was recently lent the Sigma 24mm f/2.8 Macro AF lens and Nikon 100mm f/2.8 Series E (manual focus) lens. And since I haven't posted anything for quite a while, I thought I might as well write up my thoughts on these two little lenses.

Sigma 24mm f2.8 macro & Nikon Series E 100mm f2.8 lenses mini-reviews

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Fixing up the Haoge mini ball head

February 28th, 2016

Following on from his previous article about the Haoge mini ball head and the design problem with that head, René Lesseux has sent me a follow-up article on how to fix it. This article details how to add a safety pin to the ball head, so that when it is used at an angle there is no longer a danger of the head separating.

If you have previously purchased one of these Haoge branded mini ball heads, or you have a similar design ball head that lacks a safety pin, you will hopefully find this post quite helpful. While it might seem rather complicated at first glance, if you have a stand drill, the right bits and the clamp to fix the supporting plank, the fix can be done in 15 minutes.

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Cheap Chinese Mini Ball Head Review

February 14th, 2016

Review of two cheap Chinese mini ball heads - a generic unbranded model and a Haoge branded model, and how they compare to a much more expensive Manfrotto. [...]

Converting a cheap umbrella softbox into a stripbox

January 6th, 2016

How to take a cheap umbrella softbox and turn it into a stripbox by using it with the umbrella only part-only. [...]

Low cost, size, and weight panorama head / plate

December 19th, 2015

A low cost, low weight, small size DIY panorama head / panorama plate solution for cylindrical and partial panoramas. [...]

Mini ballhead with umbrella holder Review

October 5th, 2015

Review of a mini ballhead umbrella holder, which has a 1/4″ threaded screw on top and comes with a cold shoe adapter for mounting a flash inside an umbrella [...]

UV Panoramas

September 28th, 2015

Discussion on the difficulties in taking 360° panoramas using ultraviolet light only, and links to a couple of example UV panos. [...]

XCSource ND2 ND4 ND8 Neutral Density Filter Set Review

September 21st, 2015

Review of the XCSource ND2, ND4, ND8 (1 - 3 stops) Neutral Density filter set. Looking at resolution, colour cast, infrared leakage, and flare resistance. [...]