Portrait of the author as an Old Rogue

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My name is Sigfrid Lundberg. The stuff I publish here may, or may not, be of interest for anyone else. Most of the it is related to my profession as an Internet programmer and system developer within the area digital libraries at the Royal Library, Copenhagen (Denmark) and, before that, Lund university (Sweden).

The content here does not reflect the views of my past or present employers

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Sigfrid Lundberg's Stuff is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.

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Biogon T* 2,8/25 ZM: Portrait of a lens

Sigfrid Lundberg's Stuff, 2012-11-18

This is one of the very sharpest lenses made by mankind. Its resolution at aperture f/4, 400 lp/mm, corresponds to the maximum resolution theoretically possible at f/4; in other words it represents the calculated 'diffraction limited' performance at this aperture. says La Vida Leica in its review of the lens. To put this in another way: Physics prohibits the construction of a lens with hight resolution power!

Before I walked away to buy it I did read a handful of other reviews, including, ones by Steve Huff and diglloyd. You find my shots taken with Biogon T* 2,8/25 ZM here. Below you find a random sample from my personal favourites.

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Categories: Images, Lenses, Photography
Permalink: http://sigfrid-lundberg.se/entries/2012/07/biogon/

Other, not yet obsolete stuff

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
2012-11-18 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
2012-05-14 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
2012-05-08 Creative Commons and Dutch Elm Disease
A story about some dead trees, a walk with friends in Skåne and a natural reserve outside Bristol, UK.
Flickr, Creative Commons, Photography
2012-02-02 Sigfrid intervjuad av Kristina
Kristina Alexandersson är en aktiv person i allt som handlar om Internet, lärande och öppet innehåll. I dag publicerade hon en intervju med mig på CreativeCommons svenska sajt.
Photography, Open Content
2012-01-18 Shooting M mount
I have been shooting M mount since November last year.
Images, Photography, Hardware