Monday, 2015-11-09

A small lens test

I was bored one night so I’d thought I’d check just how flare-y my 70s era 35mm ƒ/1.4 Nikkor is for point light sources.

So it’s off to Slussen where I captured the rain-soaked ambiance of the Big City.

(All images below link to full-size JPGs.)

As expected, the 35 wide open has coma galore:

small version of NI35_1.4
35mm ƒ/1.4 N @ ƒ/1.4

But stop it down to ƒ/2, and it cleans up nicely.

small version of NI35_2.0
35mm ƒ/1.4 N @ ƒ/2.0

Compare with a much more modern lens, the Cosina-Voigtländer Ultron 40mm ƒ/2. This is a lens with at least one aspheric element, modern coatings, but also built with constraints in mind (compactness):

small version of CV40_F2.0
CV40 @ ƒ/2.0

Here are both lenses at ƒ/5.6:

small version of NI35_5.6
35mm ƒ/1.4 @ ƒ/5.6

small version of CV40_F5.6
CV40 @ ƒ/5.6

Some observations….

It’s clear Nikon designed the 35 as a general-purpose PJ lens, where you used it wide open at night when you really had to. It’s remarkably compact with a 52mm filter size and doesn’t really give anything up stopped down.

The images are basically straight out of camera. The warm cast in the 35mm images are from the yellowing of its radioactive thorium lens element.

Focus was on the construction sign by the stop sign in the middle of the image.

Exposure was 1/60 @ ƒ/1.4 and ISO 400 (EV 9).

Wednesday, 2015-11-04

The Red: First Light by Linda Nagata

Competent near-future military SF. First book in a trilogy.

Saturday, 2015-10-31

Monday, 2015-10-19

Dark Intelligence by Neal Asher

Asher for me occupies that niche of SF writers that I like to read but don’t atively seek out. He’s readable and has decent world-building chops but something about him doesn’t grab me. That said, I enjoy his hard-boiled prose and refreshingly nihilistic view of future society.

Said nihilism can shade into something like fascism, like in the near-future Owner trilogy, but in the far future Polity universe, where humanity is led by AIs anyway, it grates far less. In a sense, Asher is the anti-Banks.

The novel under discussion marks a return to the Polity, or rather its lawless border region with the over-the-top homicidal Pradors. These aliens, denoted as “utterly evil” by our protagonists, are neverlessly examined as actors in their own right, in another sign of Asher’s even-handedness. Life in the future may be nasty and brutish, but if you’ve got access to the right (or wrong!) technology, it’s reasonably long. Long enough for you to dwell on your mistakes or plan elaborate revenge.

Saturday, 2015-10-03

Slow Bullets by Alastair Reynolds

A short novella, not set in any of the previous Reynolds universes. A short read, but quite good.

Wednesday, 2015-09-30


This month we have coworkers and iconic Stockholm views.


Smoke on the water

Gröna Lund

Johan & Shyam

Sep 2014 | Sep 2013 | Sep 2012 | Sep 2011 | Sep 2010 | Sep 2009 | Sep 2008 |

Monday, 2015-08-31


This month’s theme is “water”.

Färja / Hammarby sjö

Hammary sjö

Östra Ågatan


Aug 2014 | Aug 2013 | Aug 2012 | Aug 2011 | Aug 2010 | Aug 2009

Friday, 2015-08-07

A dive into my EXIF data

For a long time I’ve been content having a bunch of “0.0mm ƒ/0.0” lenses in my Lightroom library, as I’ve been quite conscientious of tagging them with the correct lens info. This, in combination with the manual lens settings in my camera gave me focal lenght and actual aperture used and I felt that was enough.

However when playing around with Lightroom Dashboard I grew nerdily annoyed with the huge chunk of unknown lenses, so I grabbed the LensTagger plugin and started the ardous process of identifying my lenses and updating the EXIF.

It turns out I’ve not been as conscientious as I’ve thought. But by a bit of detective work I’ve now got some meaningless stats to show[1].

Here are each year’s most popular lenses, in descending order. I’ve also included all the images uploaded to Flickr (since I got LR in 2011) as a sampling of the stuff I’m prepared to show people.

Flickr 2015 2014 2013 2012 2011
45mm ƒ/2.8 P Ai‑s 28‑105mm ƒ/3.5‑4.5 D 28mm ƒ/2 Ai‑S 28‑70mm ƒ/3.5‑4.5D Sigma 18‑50mm ƒ/3.5‑5.6 (27‑75mm‑e) 35mm ƒ/1.8 DX (52.5mm‑e)
1 Nikkor VR 30‑110mm ƒ/3.8‑5.6 (81‑297mm‑e) 1 Nikkor VR 30‑110mm ƒ/3.8‑5.6 (81‑297mm‑e) 1 Nikkor VR 30‑110mm ƒ/3.8‑5.6 (81‑297mm‑e) 28mm ƒ/3.5 Ai 35mm ƒ/1.8 DX (52.5mm‑e) 18mm ƒ/3.5 AI‑s (27mm‑e)
35mm ƒ/1.8 DX (52.5mm‑e) 1 Nikkor 10mm ƒ/2.8 (27mm‑e) 28‑105mm ƒ/3.5‑4.5 D 45mm ƒ/2.8 P Ai‑s 105mm ƒ/2.5 Nikkor‑P (157.5mm‑e) 55mm ƒ/3.5 Auto Micro (82.5mm‑e)
28‑70mm ƒ/3.5‑4.5D 35mm ƒ/1.4 N Cosina‑Voigtländer Ultron 40mm ƒ/2 55mm ƒ/3.5 Auto Micro (82.5mm‑e) 24mm ƒ/2.8 AF‑D (36mm‑e) 35‑70mm ƒ/2.8 AF‑D (52.5‑105mm‑e)

[1] I’ve restricted my selection to RAW images only.

Friday, 2015-07-31


Hook! (or slice, what is difference)

Hammary kaj

Fireworks in the distance



Jul 2014 | Jul 2013 | Jul 2012 | Jul 2011 | Jul 2010 | Jul 2009

Tuesday, 2015-06-30


Hammarby sjöstad



Hammary kaj

Jun 2014 | Jun 2013 | Jun 2012 | Jun 2011 | Jun 2010 | Jun 2009 |