Monthly Archives: April 2015

Images: Flying over London

Amazing conditions tonight flying into London, great visibility, light and cloud formations. The fates smiled upon me with the window seat at the back of the aircraft (thank you fates).

590nm images from a full-spectrum Olympus M5 with a 590nm lens filter.

London Thames & Docklands - 590

London Thames & Docklands – 590

Westminster - 590

Westminster – 590

Buckingham Palace - 590

Buckingham Palace – 590

Brentford - 590

Brentford – 590

All image rights reserved.

 

HowTo: UV & Bandpass Filters

One of the questions I have had is, what happens with a bandpass filter if you cut out near-UltraViolet. Bandpass filters, like the Scott UG1, UG5 and BG3, mix UV with IR; effectively letting in some blue/violet and negating the need to colour/channel-swap.

Using a Hoya UV HMC(0) filter, which has an aggressive cut off right on he 400nm, stacked with UG5 and BG3 filters, helps answer the question.

A BG3 filter, with a transmission like this:

BG3

BG3

With a UV(0) should make for a transmission like this:

BG3+UV0

BG3+UV0

And a UG5, which has a transmission like this:

UG5

UG5

With a UV(0) should make for a transmission like this, with a lot more IR:

UG5+UV0

UG5+UV0

The results, from a little test this morning are below – the left image is the straight bandpass filter and the right image is with the UV(0) filter added.

UG1

UG1 comparison

UG1 comparison

UG5

UG5 comparison

UG5 comparison

BG3

BG3 comparison

BG3 comparison

There is not a lot of difference in reality, the UG1 shows the biggest difference but then it has the weakest UV and IR intake. You easily make the images on the right with a simple tweak, post shot, on the computer.

The answer I guess, is that cutting out near-UV does not really do much at all.

All image and content rights reserved.

KAP: Gentles clickPAN-PRO Controller

For those that are using the common Gentles clickPAN-PRO controller on their rig (I use mine with a KAPshop Modular1 rig), here is the set-up and configuration manual: clickPAN-PRO – I had a little trouble find it initially so thought it worth posting.

Also knocked up this diagram to help.

The key is which three point plug goes where. Read the diagram left to right, looking at it the same way in the pic.

  • Left Back = Tilt motor
  • Left Front = Shutter control
  • Right Back = Pan motor
  • Right Front = Power feed

The plug/connectors should be, left to right (again looking the same way): yellow/white, red, black.

Gentles clickpan controller

Gentles ClickPan controller

Pin Settings:

PAN

ClickPan Pan Pin Settings

ClickPan Pan Pin Settings

ClickPan Tilt Pin Settings

ClickPan Tilt Pin Settings

ClickPan Tilt Squence

ClickPan Tilt Squence

ClickPan Shutter Pin Settings

ClickPan Shutter Pin Settings

PS: Also found this excellent, and more informative, summary  via the good KAP folks at the Berkeley Edu forum:

Link to Gentles Site: Gentles

Link KAPshop Modular1: Modular1

Info: The Apple Aperture dilema

Aperture icon

Like most long term Apple Aperture users (version 3), I am now forced to face the dilemma of what to do: migrate to the new dumb & dumber Photos app, migrate to Adobe’s Lightroom (and their insidious payment plan) or spend endless days searching the internet for that inexpensive, but functionally brilliant, holy grail alternative.

I really like Aperture and have invested considerable time and effort in it, with the rewards. I get that Apple has given us fair notice of the the change/drop, but I still feel stranded and let down.

A cursory play with Photos, backed up with some good informed and trusted articles, is not encouraging to move now to Photos. it is not just about the images in the library and all the built-up meta data, it is just as equally about the plug-ins and invested workflow. 🙁

For now, I will hold on to Aperture for as long as I can, in the hope that the likes of Topaz and Google Nik fill the gaps with Photos or someone like Serif steps into the gap. Good as Lightroom is, Adobe and their insidious subscription plan is just too painful right now. Here is hoping that any up and coming Apple patches and OSX releases do not switch Aperture off.

Apple you let me down; not all of us are the dumb users you seem to watch to now sell to.

Articles: