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Noia 64 apps karm.svgThis user has been on Commons for
11 months and 10 days
350+This user has made over 350 contributions to Commons, including over 31 uploaded images.
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Quality images logo.svgThis user has uploaded 7 quality images to Wikimedia Commons.
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Zerene StackerThis user uses Zerene Stacking Pro software.
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de-N Dieser Benutzer spricht Deutsch als Muttersprache.
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Wiki commons: As a newbie to Wiki Commons, I have yet a lot to learn, especially from the community. I have spent many evenings screening through reams of both Wikipedia and Wiki Commons pages ever since their inception at the turn of this century.

My aim is to give back some of the joy and wisdom I have so freely received from others.

Donating images: Thus I seek to contribute selected photographs to the global community. Photographs as allowed by German law, depicting mostly living and inanimate objects of nature. All derived from digital and analogue stocks of mine.

Experience: I have accumulated 50+ years of experience as a photographer, 46 years with ever improving single lens reflex camera systems. I have experimented with multiple lighting arragements, and various image editing programmes, but have till this day not once shared any of my photographs with any other persons than my family, closest friends, and, of course, the many wedding couples I have depicted. This state of encapsulation shall now end!

Exa outfit: My first single lens reflex camera was an East-German-built Exa body, purchased in 1972. Two lenses were sufficient: 50mm and 135mm. Started off with negative films, later colour slides.

Canon FD / Leica outfits: I still own an extensive set of Canon FD lenses, all prime, and A-1 / AE-1 bodies, ranging from a 15mm fish eye lens to a 500mm mirror telescopic lens, all purchased in the early 1980'ies. The 50mm, 80mm and 100mm macro lenses provide the best quality. Marriage added a substantial set of Leica bodies and prime lenses. This analogue outfit has served me well right up to approx. the year 2010, but did not allow true HDR nor focus stacking, and only imperfect panoramas.

Olympus E10 outfit: My first digital camera was an Olympus E10, sporting a small sensor with an impressive count of 4 megapixels and a fixed zoom lens.

Sony Alpha 7R / Canon FD adapter: Come 2014 with the introduction of the Sony Alpha 7R body. The ideal camera for me, as I could attach all my lenses via adapter to the Sony body. Now high-resolution stereo photography, HDR (high dynamic range), high-resolution focus stacking, highly detailed macro photography, and quasi-perfect panoramas were within reach.

Sony Alpha 7RII / Zeiss lenses: Very soon it became clear that the 1.8/55mm Zeiss prime lens I had purchased with the body was way better than the previously used Canon FD 55mm 1.2 lens. Since then I have purchased both a Sony Alpha 7RII with a built-in stabiliser, a set of Zeiss Batis prime lenses (1.8/85mm, 2/25mm, 2.8/18mm) plus a Zeiss/Sony 2.8/90mm macro G OSS prime lens. Most recent addition: a Sigma 1.8/135mm DG prime lens plus Sigma Canon EOS to Sony E lens adapter.
All these modern lenses provide the superb quality required for large-scale crops, especially in combination with the sturdy (and heavy) tripod I have been using regularly ever since purchase in 1980. But take note that the bokeh effect with the old but proven FD lenses is in general far more pleasing than the (multiple) rings visible within the bokeh circles one can attain with modern aspherical lenses.
The Sony Alpha 7RII body sports a sensor resolution of 42 megapixels. The image size is 7952x5304 pixels.

Digitising: I am currently digitising the best of my slides and negatives. I thus intend to supply both historically interesting and high-quality photographs.

Panoramas: up to 7952 pixels wide are created by simply cropping a suitable image. Larger panoramas are created by stitching more than one intersecting image via specialised software. I have been using a multitude of Adobe Photoshop versions for this purpose since 1999.

Focus stacking: Having loosely experimented with focus stacking software since 2012, I have in the past 4 years delved into the finesses of the software product Zerene Stacker Pro. Following up a series of thorough testing with objects of varying size, depth and complexity, also in comparison with the product Helicon Focus, I finally purchased Zerene Stacker Pro in mid-2018.

HDR: I have yet to find a suitable software to correctly process HDR images. The software products I have used so far more often than not tend to introduce strange colouring effects and unnatural fringes. I thus have discontinued this technique since 2016 and have taken resort to processing uncompressed RAW files whenever possible, as the Sony Alpha 7RII sensor can discern slightly more than 10 aperture values of dynamic range at ISO 100, which are subsequently stored as 14 bit RAW values. Maybe the HDR situation has improved meanwhile and is worth another try.

Combining techniques / stereo: I have also experimented with combinations of the above techniques: focus stacking of panoramas, panorama HDRs, macro stereo sets comprising two focus stacks. Not all are represented in the files I have uploaded to Wiki Commons this far.

Experience with Photography-related TechnologyEdit


For the knowledgeable:
Franz van Duns

Suggestions for improvement welcome.

German version intended.

Submitted FilesEdit

Click to see:     FileList.      

  Featured PicturesEdit

Featured Picture

  Quality ImagesEdit

Quality image declaration

Quality image
This image has been assessed using the Quality image guidelines and is considered a Quality image.

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Submissions to Wiki Commons ChallengesEdit

Favourite ImagesEdit

Composite ImagesEdit

Images Created by Focus StackingEdit

Very High Resolution Images (at least one dimension has a minimum size of 10,000 pixels)Edit

Other ImagesEdit

Technical AssistanceEdit

I have provided technical assistance for the following images taken by others:

Promotion AssistanceEdit

I have promoted the following images which were taken by others:

Useful LinksEdit

Wiki CommonsEdit

Image guidelines


Commons:Deletion policy   >   Note: to have a recently uploaded image removed, simply tag it as {{speedy|reason for deletion}}


When to use the {{PD-Art}} tag   >   See also: Reuse of PD-Art photographs


Assorted links:

  Focus stacking


Straight to the current "wiki commons photo challenge"

  How to submit a new entry / example: Commons:Photo_challenge/2019_-_June_-_Geology (Edit)

  How to vote for up to three images / example: Commons:Photo_challenge/2019_-_April_-_Prisons/Voting



Commons:Quality ImagesEdit

Commons:Quality images candidates   >   preceded by rules for nomination as a quality image.

Quality images candidates list

Quality images recently promoted

Commons:Featured ImagesEdit

Commons:Featured pictures   >   preceded by rules for nomination as a featured picture.

Featured images candidates list

Template:Featured picture candidates overview

Category:Featured pictures by subject   >   root page for all featured images.

  Commons:Featured pictures/Objects

Commons:Valued ImagesEdit

Difference between quality images, featured pictures, and valued images:

Note: the following text was extracted from page Commons:Valued images:

  • The quality images project aims to identify and encourage users who provide images of high technical quality to Commons.
  • Featured pictures are the cream of the crop at Commons and the project is reserved for images of both extraordinary value and technical quality.
  • Valued images, on the other hand, are those that are the most valuable of their kind for use in an online context, within other Wikimedia projects.
  • The technical requirements for valued images are typically much lower, as there is no concern about suitability for print usage. A built-in camera in a modern mobile phone should be sufficient if the subject is of high value and the photo illustrates it well at a viewing size of 480×360 pixels or equivalent.
  • Valued images are less about technical quality and more about your ingenuity in finding good and valuable subjects which matter, and about the usability of the information on the image page.

Commons:Valued images   >   contains rules regarding nomination as a valued image.

Valued image criteria

Valued image scope

Valued image candidates nomination procedure

Valued images candidates list


General Policies Regarding TemplatesEdit



Inter-Wiki TemplatesEdit

  Template:C   >   Establishes a link to a category, either within Wiki Commons or to another Wikipedia
      >   Usage: {{ C | 1=category name, optional namespace | 2=displayed text | 3=interwiki access, via language code | 4=+/- precedes category name with namespace "Category:" }}
      >   Note: {{c | Category:XYZ | ...}} is seemingly identical to {{w | c:Category:XYZ | ...}}

Specialised Templates for use within Wiki CommonsEdit

  Template:Panorama   >   Usage: {{Panorama | 1=Description of the subject | 2=Number of images used | 3=Software used}}

  Template:Focus stacked image   >   Usage: {{Focus stacked image | 1=Description of the subject | 2=Number of images used | 3=Software used}}

  Collection of links to lists of utility templates Wiki Commons

    List of string manipulation templates within Wiki Commons

  Template:Assessments   >   Usage: {{Assessments | featured=1 | enwiki=1 | com-nom=Bar.jpg | ...}}

Specialised Non-Wiki-Commons Templates (Wikipedia / MetaWiki)Edit

  Template explained: Wikipedia:Transclusion

  List of string manipulation templates within Wikipedia   >   contains far more templates than Wiki Commons

  List of string manipulation templates within MetaWiki   >   contains additional templates


Categories - General PoliciesEdit

  Commons:Categories   >   How to use

Examples for Hierarchical CategoriesEdit

  Category:Meta categories   >   contains only subcategories but no images

    Category:Files by technical criteria   >   contains only subcategories but no images

      Category:Images by technical criteria   >   contains only subcategories but no images

        Category:Images by resolution   >   contains only subcategories but no images

          Category:High-resolution   >   contains subcategories and images

            Category:High-resolution images of architecture   >   contains only images

Other Wiki Branches / Interwiki LinksEdit

INFO: Explore page Template:W

Wikimedia user groups


Help:Notifications/Thanks   >   Still searching for a simple, concise method to send a simple "thank you" to another wiki user. Answers:
  Method 1: via talk pages.
  Method 2: send a "thanks for editing" in the edit history of files and wiki commons pages.

Significant CategoriesEdit


  Photographs of stamen and anthers

Further ReadingEdit

Commons:Photography terms

yet unusedEdit