Camera: Canon XSi (modified) Lens: Sigma 20mm f/1.8, Canon 50mm f/1.4 Mount: Still Tripod, Astrotrac Shot: VHDR (Variable High Dynamic Range) Mosaic Mountains, Trees, Most Water: 10x10 seconds 20mm f/4 ISO 800 10x30 seconds 20mm f/4 ISO 800 10x60 seconds 20mm f/4 ISO 800 10x120 seconds 20mm f/4 ISO 800 Water: Used above with an additional 8x4 seconds 20mm f/4 ISO 800 Lady: 1x4 seconds 50mm f/2.0 ISO 1600 Sky: 6x120 seconds 20mm f/4 ISO 800 (Tracked) 6x60 seconds 20mm f/4 ISO 800 (Tracked) 6x5 seconds 20mm f/4 ISO 800 (Tracked) "Star": 1x300 seconds 50mm f/8 ISO 200 (Filter) Processing: Photomatrix Pro, Photoshop CS5, Topaz DeNoise 5
I have been working on developing a new processing technique for the past few weeks and I was finally able to collect some data that would work well. I call the technique "Variable High Dynamic Range" (VHDR) imaging. Normal HDR imaging involves taking exposures of different lengths and combining them to produce a single image. VHDR takes that one step further, in which different parts of the image have different high dynamic ranges. Location: Rocky Mountain National Park, CO Date: 2011-09-05 Camera: Canon XSi (modified) Lens: Sigma 20mm f/1.8 Mount: Still Tripod, Astrotrac Shot: VHDR (Variable High Dynamic Range) Mosaic Land: 3x30 seconds f/4 ISO 800 (Mosaic) 3x120 seconds f/4 ISO 800 (Mosaic) 3x300 seconds f/4 ISO 800 (Mosaic) Sky: 9x10 seconds f/2.8 ISO 1600 (Mosaic) 9x60 seconds f/4 ISO 800 (Mosaic) Tracked Processing: Photoshop, Topaz DeNoise 5
Location: Near Carr, CO Date: 2011-07-02, 2011-08-18 Camera: Canon XSi (modified) Lens: Sigma 20mm f/1.8 Mount: Still Tripod, Astrotrac Shot: Mosaic Land: 3x120 seconds f/3.2 ISO 800 Sky: 21x432 seconds f/5 ISO 1600 Processing: Photoshop, Topaz DeNoise 5
