Wednesday, November 28, 2012
There is a new set of sliders in Lighroom 4.2, under the Development Module, there has been a Remove Chromatic Aberration section for a while, way down the bottom of the panel under Lens Correction section. These sliders now give some much easier to use tools to deal with those annoying colour halos and fringes that often show up in many photos, especially in backlight subjects or high contrast areas, low f-stops (fast lenses) and high ISO sensitivity.Tings like the moon and the sun are classic cases as they are much brightyer than the sky around them. In the Lightroom jargon these halos are grouped under the term a colour fringe, and thus defringing just means removing these colour artifacts.
Unfortunately the way my screen capture works I can not show you the eye dropper in action, but the tool is very easy to use. You just click on the eyedropper in the Remove Chromatic Aberration panel and the cursor becomes an eyedropper with an associate panel that shows the fringe colour you have picked, by pointing the cursor/eydropper at the part of the halo you want to remove. This then automatically sets the individual sliders in the colour Chromatic Aberration sub panel, that deal with specific colour halo ranges and in most instances does a fine job of removing the colour halos The slides do let you control which colours to want to remove from the halo and the two markers on each of the purple Hue & Blue Green Hue sliders can be used to set the range of colours you want removed, move them apart to remove the colour halo and “heals” the fringe around the subject. In this case the moon had a purplish rim (it may look red but it is more a purple hue.). I actually tweaked the sliders a little ;lift the strength of the puirple correction.It not perfect, the edge is still a little fuzzy but it is a decent image now.
Sunday, November 25, 2012
My little post yesterday didn’t include one very important point about Instagram. It uses only square crops! However when you are used to 3:4 and landscape formats the square is somewhat constraining and particularly how you tackle composition does require a rethink. Misho’s suggestion to center the subject and keep the background simple were a great start, but this still left me plenty of room to experiment.
This was probably an incidental side lesson, but misho’s approach to adding text captions onto a series definitely helps viewers see the actual story behind his photos (see #wvaindia in Misho’s instagram photostream). This inspired me to think about using a series of photos to tell a story. Here I am using a panorama format to tell two stories of the day. Above is a time series collage of a lesson in Bollywood style dancing. Below is an "interactive" panorama of a multi-image sequence telling a few glimpses of the story of people taking in different aspects of art in the park (click to view and use your mouse to navigate around or click on the play triangle to see a 3D-like slideshow
Who says a photographer shouldn’t be a story teller?
Saturday, November 24, 2012
A quick google search of “Alternatives to Instagram” yields a lot options, and a lot are very anti-facebook, or just anti-apple-verse. The article by Adam Dachis of Life Hacker, covers the angst between the ios fan boys, android-ites and the facebook-haters , with some decent alternatives, both for apple and android. This PC World Slideshow gives some sound alternatives for android users. I quickly grew weary of the opinionated outpourings in many of the other articles and was surprised how little investigation or discussion into what makes instagram so popular. My conclusion is instagram just makes it easy to share photos to the web and its photo filters can help make something boring a bit more zanny! Am I selling instagram short?
So what do I really need to prepare for the, probably nothing, because I already have these capabilities on my phone.. One important aspect of a previous misho workshop was the 3 step work flow on cameraphones 1.Shoot, 2.Edit,3. Share message, and instagram does fit this approach. So my best preparation is probably just to make sure I have these steps covered. The final share step is the big one, clearly i can not upload to the instagram site but I have been uploading to shared sites for a while now and flickr is probably the easiest (not that i have been using it a lot) offering a good range of ways to upload from mobile phones. Albeit with just the fancy filters, with iconoc city names. For the edit step I prefer aviary, for my android, and whilst I only use it occasionally it does have some decent filters and editing features. The shoot step is obvious. I’ll find out tomorrow if I am prepared enough!
Thursday, November 22, 2012
A couple of minutes of cloning and the fence has gone. A little tweak of clarity and vibrance to 'lift" the final image.
Sunday, November 18, 2012
Wednesday, November 14, 2012
The total eclipse this morning saw a hoard of photographers heading for Cairns and Port Douglas. Although I would have liked to be with them I was committed to being in Melbourne, which only got a partial eclipse. However this was an opportunity to expand on the telescope image projection technique, I have used back during the Transit of Venus Project in June this year. The method involves using a conventional telescope to focus the image of the sun projected onto a screen behind it. It worked particularly well to capture the partial eclipse, see sequences of images above, which I’m sure would have gone undetected by most in Melbourne despite the cloudless conditions.
So does anyone have an explanation? Is it problems/changes in picasa web (ie google+ification of the place) or is something broken in windows live writter?
Using the blogger,com web tools to upload pictures is a viable work around for now. But....