Size of this preview: 800 × 532 pixels. Other resolutions: 320 × 213 pixels | 640 × 425 pixels | 1,024 × 680 pixels | 1,280 × 850 pixels | 2,560 × 1,701 pixels | 4,672 × 3,104 pixels.
Original file (4,672 × 3,104 pixels, file size: 1.78 MB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
| Description |
English: Non-cropped (but JPEG-downscaled) macro photo of an edge of a plastic ruler with millimeter scale, created with a macro lens Tamron SP AF 90 mm F/2.8 Di MACRO 1:1 and a wide angle lens smc Pentax-M 28 mm F/2.8 mounted in "reverse position". This combination (see photo links below) allows a magnification of 3.2:1 – but only with a tiny depth of field at a working distance of approx 4 cm. The shading of the corners is probably due to the fact that the reversed lens had a smaller filter diameter (49 mm) than the camera-mounted lens (55 mm). With an aperture of f3.5 in the macro and f22 in the reversed lens, the vignetting was the lowest (and the depth of field was the best; as shown here).
Deutsch: Unbeschnittenes (nicht "gecropptes") Makrofoto der Kante eines Plastiklineals mit Millimetereinteilung, erstellt mit einem Makroobjektiv Tamron SP AF 90 mm F/2,8 Di MACRO 1:1 sowie einem Weitwinkelobjektiv smc Pentax-M 28 mm / 1:2,8 in "Retrostellung". Diese Kombination (siehe auch Fotolinks unten) ermöglicht zwar einen Abbildungsmaßstab von ca. 3,2:1, allerdings bei einer winzigen Schärfeebene in einem Arbeitsabstand von lediglich ca. 4 cm. Die Abschattung der Bildecken kommt wohl dadurch zustande, dass das Retroobjektiv einen kleineren Filterdurchmesser hatte (49 mm) als das kameraseitige Objektiv (55 mm). Bei einer Blende von f3,5 des Makros und f22 des Retroobjektivs war diese Vignettierung am geringsten (und die Schärfentiefe am größten; wie hier gezeigt). |
| Date | |
| Source | Own work |
| Author | Christian Fischer |
| Other versions |
Equipment:   Other trials:    |
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Attribution: Christian Fischer
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:02, 30 September 2010 | | 4,672 × 3,104 (1.78 MB) | Fice | {{Information| |Description= '''''English:''''' Non-cropped macro photo of an edge of a plastic ruler with millimeter scale, created with a macro lens Tamron SP AF 90 mm F/2.8 Di MACRO 1:1 and a wide angle lens smc Pentax-M 28 mm F/2.8 mounted in "reverse |
File usage
No pages on the English Wikipedia use this file (pages on other projects are not listed).
