File:Detail of spider (Dysdera crocata) with secretions between massive chelicerae - DSG1941-1 - 2022-11-08 (magnif. ratio 2.8x, HiRes).jpg
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[edit]DescriptionDetail of spider (Dysdera crocata) with secretions between massive chelicerae - DSG1941-1 - 2022-11-08 (magnif. ratio 2.8x, HiRes).jpg |
English: Enlarged frontal view of a spider (genus Dysdera crocata) set on a layer of moss with outstretched legs. This image shows the spider's body, its 6 eyes in a compact hexagonal arrangement, the inner parts of all 8 legs, the pedipalps, and the massive chelicerae with strands of secretions stretched between. The magnification ratio of this crop as compared to a full frame sensor is approx.2.8:1, i.e. 2.8x; the width of the image being approx. 13 mm. A total of 293 images was processed as a HiRes focus stack. |
Date | |
Source | Own work |
Author | Franz van Duns |
Taken with InfoField | This photo was taken with Sony ILCE-7RM4 |
Taken with InfoField | This photo was taken with Canon MP-E 65mm F2.8 1-5x Macro |
Camera location | 51° 28′ 48″ N, 7° 33′ 00″ E | View this and other nearby images on: OpenStreetMap | 51.480000; 7.550000 |
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NOTE: This image is a focus stacked image of "Enlarged frontal view of a spider (genus Dysdera crocata)" consisting of 293 images that were merged using Zerene Stacker Version 1.04 Build T2022-04-21-0715 (licensed). As a result, this image underwent digital manipulation which may have included blending, blurring, cloning, and colour and perspective adjustments. As a result of these adjustments, the image content may be slightly different than reality at the points where the images were combined. This manipulation is often required due to lens, perspective, and parallax distortions.
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This picture won the 21 place in the Photo challenge Macro photography in May 2023. |
This image has been assessed using the Quality image guidelines and is considered a Quality image.
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Additional Information
[edit]en: Enlarged frontal view of a spider (genus Dysdera crocata).
- This arthropod is set on a layer of moss with legs outstretched .
- This image displays the spider's body, its 6 eyes in a compact hexagonal arrangement, and the inner parts of all 8 legs
- One of its pedipalps is concealed by its foremost leg and the massive pointed chelicerae are connected by strands of secretions stretched between.
- The magnification ratio of this crop as compared to a full frame sensor is approx.2.8:1, i.e. 2.8x; the width of the image being approx. 13 mm.
- Focus stack derived from a total of 293 images, the lens being attached to a "Novoflex Castel-Micro" focusing rack and automatic stepper, advancing 0.08 mm between images.
- Very high resolution: all across the image both body parts and bristles are resolved in fine detail.
- Image series taken in Aplerbeck, Dortmund, Germany in November 2022.
- See below for technical details concerning the "making of" this image.
Technical Details / Making of this Image
[edit]- Focus stacked image.
- [1] Camera: ILCE-7RM4: Sony Alpha 7RIV, 61 Mpixels, sensor size 9504x6336
- [2] Lens: Canon MP-E 65mm f/2.8 1–5x Macro + Canon EF Adapter (Metabones Canon EF to Sony FE adapter), focal length 65.0 mm.
- [3] Scope: 293 images, initial magnification factor based on full sensor size before crop: 1.5:1 (1.5x) (see section {9} Final dimensions...).
- [4] Camera / lens settings: manual mode, electronic shutter, ISO 100, 1/40s, aperture 4.0, bias (=exposure compensation) -0.7, WB (white balance) 5600K, BrightnessValue 3.7125, colour space 'Adobe RGB'.
- [5] FOCUS STACK recording: camera attached to focusing rack / automatic stepper Novoflex Castel-Micro, step set to 0.0800 mm, resulting step 0.0800 mm, total distance covered 23.36 mm (from nearmost focus to the most distant focus spot), delay between images 4 sec., duration 23 min., took 293 images, both as JPG and 16-bit 'Adobe RGB' RAW (.ARW) files.
- [6] Adobe Lightroom: imported all 293 16-bit 'Adobe RGB' RAW (.ARW) files (a) Applied current standard preset 005 (WB, tint:unaltered, Exposure+0.90, Presence: Texture+30 Clarity+30 Vibrance+5 Saturation+3, Sharp: Amount+70, Radius:1.0 Detail:25 Masking:20, NoiseRed: Lum:50 Detail:50 Contrast:0 Color:30 Detail:50, Smooth:50, LensCorr:all) (b) Subsequent changes (final values stated): Exposure:-- Texture+50 Clarity+10 Vibrance+5 (c) tone curve: 200>165, 240>220 (d) exported as TIFF/16bit, 'ProPhoto-RGB' colour profile.
- [7] FOCUS STACK processing: (a) tool 'Zerene Stacker' 1.04 (b) stacked all 293 TIFF images via 'PMax' method with slabbing set to '20 images per slab, 3 images overlap' (c) Stacking artefacts: retouched all leg sections with semi-transparency artefacts due to rear moss layers (i.e. focus-based retouching required at this stage) (d) exported as one TIFF/16bit 'ProPhoto-RGB' image.
- [8] Adobe Photoshop: (a) imported stacked TIFF/16bit image, explicitly preserving embedded colour space 'ProPhoto-RGB' (b) removed sensor specks and visible specks of dust and strands (c) mask: NO (d) tone curve: 25>10, 85>70, 175>160, 235>210, 250>235 (e) enhanced sharpness: NO (f) rotated: NO (g) cropped: 5100x3400 (h) saved as PSD file (i) exported as JPG max. quality file (6 of 7) with embedded 'sRGB' colour profile.
- [9] Final dimensions: width of image: approx. 13 mm, i.e. magnif. factor based on full frame approx. 2.8x.
- [10] ExifTool: added user-related tags and reimported technical tags that hat been discarded during Photoshop EXPORT-AS-JPG processing from both original .ARW and intermediate .TIF files.
- [11] Wiki Commons categorisation: 'Category:Dysdera crocata'.
Wiki Links
[edit]- Wikipedia en: woodlouse spider (Dysdera crocata)
- Wikipedia de: Großer Asseljäger (Dysdera crocata)
Licensing
[edit]- 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 | |
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current | 22:22, 28 May 2023 | 5,100 × 3,400 (5.02 MB) | Franz van Duns (talk | contribs) | Uploaded own work with UploadWizard |
You cannot overwrite this file.
File usage on Commons
The following 7 pages use this file:
- User:Franz van Duns
- User talk:Franz van Duns
- Commons:Photo challenge/2023 - May - Macro photography
- Commons:Photo challenge/2023 - May - Macro photography/Voting
- Commons:Photo challenge/2023 - May - Macro photography/Voting/Result
- Commons:Quality images/Subject/Animals/Arthropods/Spiders, Mites, Horseshoe crabs (Chelicerata)
- Commons:Quality images candidates/Archives September 03 2023
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Image title |
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Camera manufacturer | SONY |
Camera model | ILCE-7RM4 |
Author | Franz van Duns |
Copyright holder |
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Exposure time | 1/40 sec (0.025) |
F-number | f/4 |
ISO speed rating | 100 |
Date and time of data generation | 11:19, 8 November 2022 |
Lens focal length | 65 mm |
User comments | Focus stacked image. [1] Camera: ILCE-7RM4: Sony Alpha 7RIV, 61 Mpixels, sensor size 9504x6336 [2] Lens: Canon MP-E 65mm f/2.8 1-5x Macro Photo + Canon EF Adapter (Metabones Canon EF to Sony FE adapter), focal length 65.0 mm [3] Scope: 293 images, initial magnification factor based on full sensor size before crop: 1.5:1 (1.5x) (see section {9} Final dimensions. [ [4] Camera / lens settings: manual mode, electronic shutter, ISO 100, 1/40s, aperture 4.0, bias (=exposure compensation) -0.7, WB (white balance) 5600K, BrightnessValue 3.7125, colour space 'Adobe RGB'. [5] FOCUS STACK recording: camera attached to focusing rack / automatic stepper Novoflex Castel-Micro, step set to 0.0800 mm, resulting step 0.0800 mm, total distance covered 23.36 mm (from nearmost focus to the most distant focus spot), delay between images 4 sec., duration 23 min., took 293 images, both as JPG and 16-bit 'Adobe RGB' RAW (.ARW) files . [6] Adobe Lightroom: imported all 293 16-bit 'Adobe RGB' RAW (.ARW) files (a) Applied current standard preset 005 (WB, tint:unaltered, Exposure+0.90, Presence: Texture+30 Clarity+30 Vibrance+5 Saturation+3, Sharp: Amount+70, Radius:1.0 Detail:25 Masking:20, NoiseRed: Lum:50 Detail:50 Contrast:0 Color:30 Detail:50, Smooth:50, LensCorr:all) (b) Subsequent changes (final values stated): Exposure:-- Texture+50 Clarity+10 Vibrance+5 (c) tone curve: 200>165, 240>220 (d) exported as TIFF/16bit, 'ProPhoto-RGB' colour profile. [7] FOCUS STACK processing: (a) tool 'Zerene Stacker' 1.04 (b) stacked all 293 TIFF images via 'PMax' method with slabbing set to '20 images per slab, 3 images overlap' (c) Stacking artefacts: retouched all leg sections with semi-transparency artefacts due to rear moss layers (i.e. focus-based retouching required at this stage) (d) exported as one TIFF/16bit 'ProPhoto-RGB' image. [8] Adobe Photoshop: (a) imported stacked TIFF/16bit image, explicitly preserving embedded colour space 'ProPhoto-RGB' (b) removed sensor specks and visible specks of dust and strands (c) mask: NO (d) tone curve: 25>10, 85>70, 175>160, 235>210, 250>235 (e) enhanced sharpness: NO (f) rotated: NO (g) cropped: 5100x3400 (h) saved as PSD file (i) exported as JPG max. quality file (6 of 7) with embedded 'sRGB' colour profile. [9] Final dimensions: width of image: approx. 13 mm, i.e. magnif. factor based on full frame approx. 2.8x [10] ExifTool: added user-related tags and reimported technical tags that hat been discarded during Photoshop EXPORT-AS-JPG processing from both original .ARW and intermediate .TIF files. [11] Wiki Commons categorisation: 'Category:Dysdera crocata'. |
Short title |
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JPEG file comment | Prepared for release to Wiki Commons with the help of 'ExifTool.exe'. Many thanks. |
Width | 5,100 px |
Height | 3,400 px |
Software used | Adobe Lightroom Classic 12.3 (Win) / Adobe Photoshop 24.4 (Win) / Zerene Stacker Version Version 1.04 Build T2022-04-21-0715 (licensed) |
Exif version | 2.32 |
Date and time of digitizing | 11:19, 8 November 2022 |
Meaning of each component |
|
APEX shutter speed | 5.3219280719281 |
APEX aperture | 4 |
APEX brightness | 3.7125 |
APEX exposure bias | −0.7 |
Metering mode | Pattern |
Supported Flashpix version | 1 |
Color space | Uncalibrated |
File source | Digital still camera |
Exposure mode | Auto exposure |
Focal length in 35 mm film | 65 mm |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Keywords | spider, Dysdera crocata, chelicerae, legs, frontal, moss, macro |
IIM version | 4 |
Lens used | Canon MP-E 65mm f/2.8 1-5x Macro Photo + Canon EF Adapter |
Structured data
In dieser Datei abgebildete Objekte
depicts
Einige Werte ohne einen Wikidata-Eintrag
8 November 2022
51°28'48"N, 7°33'0"E
0.025 second
65 millimetre
100
image/jpeg
- Taken with Sony ILCE-7RM4
- Taken with Canon MP-E 65mm F2.8 1-5x Macro
- Files with coordinates missing SDC location of creation (51° N, 7° E)
- Photo challenge winners
- Quality images
- CC-BY-SA-4.0
- Self-published work
- Exposure time 1/40 sec
- F-number f/4
- ISO speed rating 100
- Photographs with aspect ratio of 3:2
- AdobeRGB photographs
- Created with Zerene Stacker
- North Rhine-Westphalia photographs taken on 2022-11-08
- Images by Franz van Duns
- Focus stacking images by User:Franz van Duns
- Quality images by Franz van Duns