Luminance HDR / Qtpfsgui
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OpenCourseWare All Grown Up: Hal Abelson at the RIT GCCIS Dean's Lecture Series
Protests demonstrate growing demand for open access to research
Created by Adrienne Yancey for opensource.com
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Created by Adrienne Yancey for opensource.com
On this particular morning a few weeks ago, it was cold, very cold if you value your fingers, (-12C/10F), and the air was dead still. At this time shore ice had not yet formed and only slight ice build-up had formed on the piles of the remains of the groynes used to stabilize the beach and minimize erosion. But the sky was filled with some great clouds. I got down low and hand-held the camera just above the wet sand (bubble level attached to help me keep the camera level), shot very wide and this is the result. Along the horizon you can see dark dots. It is a bit hard to see at the posting size but these are very large numbers of Canada Geese that seem to call this area home. A cloudscape at Fifty Point/Kelson Beach at the West boundary of Grimsby, Ontario looking North over Lake Ontario. - JW
Date Taken: 2017-12-28
Tech Details:
Taken using a hand-held Nikon D7100 fitted with an AF Nikkor 12-24mm lense set to 12mm, ISO100, Auto WB, Shutter Priority mode, f/4.0, 1/800 sec with an EV+1.33 exposure bias. PP in free Open Source RAWTherapee from Nikon RAW/NEF source file: set image final dimensions to 9000x6000, adjust exposure to -0.33 stops below (darker than) as-shot, very slightly increase contrast and Chromaticity in L-A-B mode, very lightly increase vibrance, sharpen, save. PP in free Open Source GIMP: very slightly refine overall tonality using the tone curve tool (it was nearly dead-on as-shot so all this was just extremely minor refinement), sharpen, save, scale image to 6000x4000, sharpen, save, add fine black-and-white frame, add bar and text on left, save, scale image to 1800 wide for posting, sharpen slightly, save.
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Bridging the Boxes: Hacker Matchmaking in Upstate New York, The Open Source Way
Teaching open source: Team operating principles that can be used on any project
Created by Islam Elsedoudi for opensource.com
This is the weather event that started off this weeks postings related to sunsets under a cloud layer and what can happen. Sunday evening a storm cell was showing on weather radar as moving slightly South of Grimsby, Ontario in such a location and direction as to potentially provide some dramatic light over a horse farm’s paddock atop the Niagara Escarpment on Wolverton Road just South of town. The potential for a dramatic light opportunity arose because the cloud layer above me was associated with a storm that ended further West leaving an open gap along the horizon (as seen from this area). I had pictured a photo of this particular paddock because this early in the Spring, the small pond was still full of water and would reflect any sky colour that might form. I headed up there and set up along the fence line and waited. One small rain shower later, the sun cooperated and provided this image of the farm, pond and colour-dappled clouds lit from below. Sadly, it turned out that another cloud bank was sitting further West (not visible here) and my hoped-for fully coloured base of the cloud layer above me failed to materialize. Take what you can get and hope for another opportunity. - JW
Date Taken: 2016-05-03
Tech Details:
Taken using a tripod-mounted Nikon D7100 fitted with a Nikkor 12-24mm lense set to 24mm, ISO100, WB set to daylight, Aperture priority mode, f/8.0, 1/10 sec. PP in free Open Source RAWTherapee from Nikon RAW/NEF source file: scale image up to 9000x6000, enable Graduated Neutral Density/GND filter tool and darken sky to better balance its tones with the nearby foreground, set exposure to about 2/3 stop over as-shot, boost vibrance, slightly boost contrast and Chromaticity in L-A-B mode, sharpen, enable micro-contrast, enable noise reduction, save. PP in free Open Source GIMP: adjust colour balance to reduce slight green cast, boost saturation overall and then decrease green channel saturation, use dodge-burn tool to locally brighten the horse in the middle of the frame, enable the shadows-highlights tool and significantly recover the highlights and then pull up shadows (crazy wide dynamic range that is simply impossible to manage entirely), sharpen slightly, save, scale to 6000x4000 (my preferred working size for prepping images intended to be posted online), sharpen slightly, save, add fine black and white frame, add bar and text on left, save, scale to 1800 wide for posting, sharpen, save.
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Created by Islam Elsedoudi for opensource.com
Revisión del downloading MP3 tras las declaraciones de Bill Gates sobre Open Source, licencias CC y comunismo. Lo malo es que no recuerdo donde la encontré.
During our Gang of Four (www.flickr.com/groups/2472126@N24/) coffee session at a local, Grimsby, Ontario coffee bar (Coffee Culture), Matt pulled out his venerable Pentax ME super and captured a few shots of us. He still loves film. I guess it is a novelty for those who got into photography since the digital revolution pretty much obsoleted that technology. For me, too many darkroom hours have long since removed any illusions of the charm of film. That, and the fact that I can get much better results from the digital world. However, he still loves it so more power to him. Here he is shooting with one of Pentax's famous 50mm f/1.4 lenses with rare earth elements (read slightly radioactive) that, over time caused the glass to assume a slight amber tone. None-the less, razor sharp lenses. Matt and his toy, over coffee. - JW
Date Taken: 2014-02-02
Tech Details:
Taken using a hand-held Nikon D7100 fitted with a Nikkor 18-105m VR lense set to 105mm, ISO1250 (Auto-ISO), Aperture priority, f/5.6, 1/25 sec. PP in free Open source GIMP: produce a black and white version of the image (in a new layer) using the film simulation with Ilford Delta 100 model, adjust teh tone curve to a classic 'S' shape to improve overall contrast and both black and white ends of the tonal range, use a large soft-edged eraser tool to remove the front lense element from the top BW layer to reveal the full colour area below, create new working layer from visible result, slightly increase contrast, sharpen, add fine black and white frame, add bar and text on left, scale to 1800 wide for posting.
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D7B_0723_grimcoffcultmattbwilfdel100spotcoladjbarsigx1800
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Social production as a new source of economic value creation
Empowering Natural Leaders in 'Facebook Generation' Ways
BetterMeans: a new app for running your organization the open source way
What does Google's management change say about the open source way?
Leadership in open source communities
I'll have the oolong, with a splash of open source
How is your organization faring in the war of control vs. freedom?
Busting bureaucracy with radical management
A distributed social workforce drives profit and performance
Created by Libby Levi for opensource.com
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Introducing hands-on computing in secondary education
Students in Los Altos delight in using Inkscape drawing program
Created by Libby Levi for opensource.com
The Boss and I headed into downtown Grimsby, Ontario to pick up a few things for lunch and in the process passed by a hair cutting emporium. I no longer know what to call them since the names are much more elegant than the options of my youth, when I still had hair about which to be concerned, and categories were simply Barber or Hair Dresser, possibly with the owner’s name as part of the business name, and we were less enlightened and less gender-inclusive. Here, a red-Shirted ‘barber’ is cutting a client’s hair under the illumination of a ring light, while another ‘barber’ in tan is further back. All the while, the passing parade behind me is reflected in the window through which the image was shot. Perhaps I have been watching a few too many street photography videos. Just another Saturday morning in downtown Grimsby. And, of course, Red Rule applies. – JW
Date Taken: 2025-03-29
Date PP: 2025-04-02
(c) Copyright 2025 JW Vraets
If you are interested in prints or licensing of any of my images, DM me with a brief description of what you may be looking for.
Tech Details:
Taken using a hand-held Nikon D7100 fitted with a AF-S DX Nikkor 18-105mm 1:3.5-5.6 lense set to 58 mm, ISO1250 (Auto ISO), Matrix metering, Daylight WB, Shutter Priority Mode mode, f/5.0, 1/250 sec. PP in free, Open Source RAWTherapee from Nikon RAW.NEF source file: set final image size to be 9000px wide, crop to 5:7 format by cropping off a bit off the right, apply a bit of Haze reduction to compensate for the dusty window, apply Tone Mapping at default levels, use the Vignette filter to darken the corners a bit, darken overall a bit by setting Exposure Compensation to EV-0.36, use Shadows/Highlights to recover a bit of Shadow detail, use the Graduated Neutral Density/GND filter to darken the grey strip along the top of the frame, use the L-A-B filter tool to slightly increase Contrast and also to add a b it of Lightness, sample the grey car in the bottom left to set the colour temperature, apply a little noise reduction, sharpen (edges only), save. PP in free Open Source GIMP: use the Curve tool to shape a classic ’S’ curve, add a non-destructive Dodge/Burn layer and use it to do some local brightening of the two men’s heads and pants as well as some other local spots, sharpen, save, scale image to 6000 px wide, sharpen, save, add fine black and white frame, add bar and text on left, save, scale image to 3000px wide for posting online, save.
Do you see the kids on top of the bridge?
It took a bit of patiences to get a shot with MOST of the visitors out of frame.
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Five sites for open source healthcare
Todd Park, CTO of Health and Human Services, on improving healthcare with open data
Can collaboration heal rising medical costs?
Harnessing the power of data to improve health
Open health with the quantified self
Created by Islam Elsedoudi for opensource.com
We stopped along Highway 163 as it entered the North end of Monument Valley in Southern Utah, to look at some stunning folding in the tortured landsacpe charactersitic of the area about a mile East of the highway. We had been experiencing clouds that provided only occasional shafts of light to illuminate the landscape. I waited for this patch of sun to drift over to this spot before taking the shot. The result was an abstract landscape that I felt captured the harshness of the land in this part of the world. - JW
Date Taken: 2017-05-12
Tech Details:
Taken using a hand-held Nikon D7100 fitted with a Nikkor 70-300mm VR lense set to 200mm, ISO400, Auto WB, Aperture priority mode,f/7.1, 1/640 sec. PP in free Open Source RAWTherapee from Nikon RAW/NEF source file: scale image to 9000x6000, crop off the bottom portion of the image to eliminate power lines, set exposure to 2/3 stop above as-shot, increase contrast and Chromaticity in L-A-B mode, increase vibrance slightly, slightly increase the colour temperature (warmer), sharpen, save. PP in free Open Source GIMP: adjust the tone curve to pull up/brighten the mid-tones and then darken the bottom end of the curve by pulling the tone curve dow at about 10% in from the left edge, adjust the colour balance to remove an excessive red cast by adding cyan, duplicate the image to a new layer and then duplicate it again, use the threshold tool to isolate the brightest area of the image and then use that as a mask on the layer below (after adding a layer mask to that layer), then adjust the image portion of that layer to get a good representation and brightness of the brightest area without impacting the main portion (darker areas) of the image, create a new working layer from the visible result, tweak contrast and brightness slightly to optimize the ‘look’ of the image, sharpen, save, scale image to 6000 wide, sharpen slightly, add fine black-and-white frame, add bar and text on left, save, scale image to 2400 wide for posting, sharpen slightly, save.
After buying a batch of filters from ebay. I found the 85A + 85 filters (combined) give an interesting effect. So, I took a walk around the block shooting various things.
The white balance was adjust in-camera when the photo was taken. I also used bracketed photos and HDR to increase the dynamic range.
Notice the hill in the background still has green grass.
Taken with a 650nm IR filter. using a full spectrum modified NEX-5N.
Post production:
3x exposure bracketed images were combined to remove noise and increase the dynamic range. Photomatrix software was used for this. (Highly recommend this product.)
For "Golden IR" effect. Simply swap the red and blue channels in Photoshop.
No masking or per-pixel manipulation was done.