Sigfrid Lundberg's Stuff

2014-09-03: Granite is hard
He sat on his knees and started to penetrate the tiles with hammer and chisel
Essays, Images, Photography, 2014

2013-09-09: With a full frame sensor my lenses become wider
This is an addendum to my earlier review of the 15mm Super-Wide Heliar lens
Images, Lenses, Photography, 2013

2012-11-18: Biogon T* 2,8/25 ZM: Portrait of a lens
This is one of the very sharpest lenses made by mankind.
Images, Lenses, Photography, 2012

2012-11-18: Zeiss ZM 50mm f1.5 C-Sonnar: Portrait of a lens
The 50mm Sonnar f1.5 is a transplant from the Contax rangefinder world. A real classic there. Also, it is indeed a personality with a focus shift.
Images, Lenses, Photography, 2012

2012-11-18: Voigtländer 15mm f/4.5 Super Wide Heliar: A portrait of a lens
Super-wide Heliar was the first M Mount lens I bought. I have used it extensively, in particular on my Olympus E-P2. But I still use it over and over again.
Images, Lenses, Photography, 2012

2012-05-14: On colour
When a subject contains vidid colours, I invariably transform the photo to black and white. If there are few I usually preserve colour. Unless there is special conditions that make me feel that colour is important. For instance, when the image contain vivid colours.
Flickr, Photography, Images, 2012

2012-01-18: Shooting M mount
I have been shooting M mount since November last year.
Images, Photography, Hardware, 2012

2011-05-07: On focusing on the essentials
I acquired a socalled mirrorless interchangable lens camera in August last year. Since than I have used it exclusively with manual focus vintage lenses. Here I discuss my experience blending old and new imaging technologies.
Images, Photography, Hardware, 2011

2011-05-03: A Leica lens from Minolta?
The M Rokkor lenses were produced by Minolta for their excellent rangefinder camera Minolta CLE. I aquired one of them, the 40mm f2.0, for use with my Olympus E-P2.
Images, Lenses, Photography, Hardware, 2011

2010-12-02: A tale of two lenses
Here I discuss two lenses. Both are very new. I've owned them less than three months, and they represent recent developments from the respective companies building them. But appart from that they differ in almost all aspects. Even in the very idea behind their existence.
Images, Hardware, 2010

2010-10-29: Portrait of a lens: NIKKOR-O Auto 1:2 f=35mm
Portrait of a lens I've kept since I was a teenager.
Images, Hardware, Lenses, Photography, 2010

2010-08-31: Newsagent predictions
According to Wikipedia, a newsagent is the owner of a newsagent's shop (or news stand in US English). The stock in his or her shop contains items that are expected to interest the market.
Media, Software, Images, 2010

2010-08-29: I ditched my SLR, my camera phone but not my lenses
I've bought a new camera. And I'm now a very enthusiastic owner of one of the new EVIL cameras, an Olympus E-P2.
Hardware, Images, 2010

2010-05-06: Thinking about tulips dropping their petals
The spring is advances. April's weather has been staying, but nevertheless the Thinker's Tulips have dropped their petals.
Images, 2010

2010-04-20: Holberg, the Thinker and the Tulips
Two statues, one in Copenhagen and one in Bergen
Images, 2010

2010-04-11: Pathologically Eclectic Rubbish Lister
For many years I wrote most of my code in the Perl programming language. Now I've been a exclusively java programmers for five years
Images, Programming, 2010

2010-04-06: Recycled Votive Guitar on the Compost
A view of a cemetary
Images, 2010

2010-03-28: Stanford
I've never been to California before. Now I'm here late in March after an unusually harsh Scandinavian winter
Images, 2010

2010-03-09: Thinking when the spring is approaching
Winter is just the worst part of the year. Where approaching the end of it.
Essays, Images, 2010

2010-03-08: Solar energy
White reflects radiation from the sun to a larger degree than do other colours
Images, 2010

2010-03-08: Bourne Again Shell
The Bourne Again Shell is a prominent part of my life. Dark moments I've felt that I'm obsoleted by modern technologies, but all of a sudden I realised that I'm as modern as smarphone users
Images, Programming, 2010


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My name is Sigfrid Lundberg. The stuff I publish here may, or may not, be of interest for anyone else.

On this site there is material on photography, music, literature and other stuff I enjoy in life. However, most of it is related to my profession as an Internet programmer and software developer within the area of digital libraries. I have been that at the Royal Danish Library, Copenhagen (Denmark) and, before that, Lund university library (Sweden).

The content here does not reflect the views of my employers. They are now all past employers, since I retired 1 May 2023.