Monthly Archives: November 2017

More Computational Photography

November 26, 2017Cameras and Photography, Georgia, Techniquecomputation, iPhone, landscape, long exposure, waterfallEd Rosack

As an Electrical Engineer and a long time photographer, I’ve been interested in computational photography for a while. You can read some of my earlier posts on the subject at this link. Here’s Wikipedia’s definition:

…”digital image capture and processing techniques that use digital computation instead of optical processes.”

I’d change this slightly from”instead of” to “instead of or in addition to”, but that’s a small quibble.

Moore’s law keeps driving the computing capabilities in phones and cameras ever higher and it’s fascinating to see what companies do with the extra potential.

Towalga River below High Falls, Georgia. Composite – iPhone default live view and Long Exposure, merged in Photoshop

I made the image above on our recent trip using an iPhone 8+ and Apple’s “Live Photo” mode. After I made the photo, I edited it on the phone and enabled the “Long Exposure” effect. The Long Exposure effect of blurring the moving water is computed from ~3 seconds worth of frames that Live Photo captures. This is Apple’s web page explaining the feature. Here’s what it looked like before I changed the mode – it’s not nearly as photogenic:

Default iPhone live view

Until iOS 11 added this feature, I wasn’t too interested in Live Photos. Now, I’m watching for places to use it. You can get a better image with your high-end camera and traditional optical techniques, but this is easier and a lot of fun to play with.

Here are some hints:

Pick a suitable subject: moving water, traffic on a road, blurring people in a crowd, etc.
Motion blur with a traditional optical approach requires a slow shutter speed – either low light or using filters. Since computational methods works by processing multiple frames, you can use it in bright light without filters.
Apple says it works on their newer phones (6+ and later). You’ll need to have iOS 11 (or later) installed.
The Long Exposure effect has to align Individual frames and then crop where there’s no overlap so you’ll lose pixels around the edges. Ideally, use a tripod – but that sort of defeats the idea of pulling your phone out of your pocket, doesn’t it? Just hold the phone as steady as you can to minimize cropping.
Make several exposures and pick the best one later.
Long Exposure resolution seems to be lower than default iPhone photos. This isn’t a huge problem for the moving parts of the frame – they’re supposed to be blurry. For the static portions, you can load both versions into layers in Photoshop and use masking to paint in higher resolution where you want it. I did this for the first photo above.
You can set a Long Exposure photo as your wallpaper. You’ll see the static Long Exposure version until you press on it from the lock screen. Then it changes to show the three-second animation – cool!

I hope Apple enhances this in future updates. It’d be good to have some control over the blur effect. 3 seconds is nice, but some subjects will look better with less (or more?).

iOS 11 includes other updated computation photo capabilities (e.g. portrait lighting) – but that’s a subject for another day.

Photography’s changing fast – it’s a wonderful time to be a photographer, isn’t it? In today’s digital world, many advances are likely to be computational and not optical. Keep up – don’t be left behind!

Thanks for stopping by and reading my blog. Now – go compute some photos!

Merritt Island National Wildlife Refuge – 18 Nov 2017

November 19, 2017INSIDE FLORIDA, Merritt Island NWRBPWD, landscape, panorama, Sandpiper, sunrise, TernEd Rosack

Kevin M., Kevin K., and I went to Merritt Island National Wildlife Refuge yesterday morning. We stopped by the Titusville Marina for a few sunrise photos.

Heading out

Then we drove around Black Point Wildlife Drive. The water there is very high and although wildlife numbers might be a bit below average, there’s great variety with both normal residents and winter visitors present.

A ternery pano – Caspian Terns and a Sandpiper in a four frame panorama

We saw Green, Blue, Great Blue, and Tri-colored Herons, Reddish, Snowy, and Great Egrets, a Roseate Spoonbill, Sandpipers, Caspian Terns, Belted Kingfishers, Blue Wing Teals, Coots, Ospreys, a Bald Eagle, Savannah Sparrows, White Pelicans, Gulls, Vultures, an Alligator, and probably others I missed. A person we talked to at the rest stop had just seen a bittern.

Reddish Egret

My friend Jim Boland reported seeing a Red Headed Duck, Northern Pintails, Blue Winged Teal, American Wigeons, and Northern Shovelers on BPWD in his newsletter* last Monday. We didn’t see that many – I suspect they were out there, just hidden. We heard hunters making a lot of noise throughout the morning and I bet the ducks are skittish.

If you’ve held off visiting MINWR or BPWD because you were uneasy about hurricane damage and lack of wildlife – stop worrying. The place is rapidly getting back to normal and there’s every reason to get out there and witness some of Central Florida’s beauty.

Thanks for stopping by and reading my blog. Now – go make some photos!

*By the way: If you want to subscribe to Jim’s newsletter, send him an email at jasboland01@gmail.com

Veterans Day 2017

November 10, 2017VARIOUS, Washington D.C.veteransEd Rosack

The Armistice ending World War 1 was signed on the 11th hour of the 11th day of the 11th month of 1918. In the United States, President Woodrow Wilson proclaimed Armistice Day for November 11, 1919 to commemorate. President Dwight Eisenhower signed legislation in 1953 renaming it Veterans Day and extending the holiday to honor all veterans. It’s a day to thank veterans for their dedication – a day to honor all those that place their country above themselves.

The World War II Memorial and Washington Monument

“It’s about how we treat our veterans every single day of the year. It’s about making sure they have the care they need and the benefits that they’ve earned when they come home. It’s about serving all of you as well as you’ve served the United States of America. Freedom is never free.” President Barack Obama

Vietnam War Display, Smithsonian American History Museum

“As we express our gratitude, we must never forget that the highest appreciation is not to utter words, but to live by them.” President John F. Kennedy

Marine Corps Memorial, Arlington VA

“I don’t have to tell you how fragile this precious gift of freedom is. Every time we hear, watch or read the news, we are reminded that liberty is a rare commodity in this world.” … “We owe this freedom of choice and action to those men and women in uniform who have served this nation and its interests in time of need. In particular, we are forever indebted to those who have given their lives that we might be free.” President Ronald Regan

Thanks to all active duty service members and veterans. And thanks for stopping by and reading my blog. Now – you go out and thank a veteran too!

Indian Springs State Park, Georgia

November 4, 2017Georgia, Must do list, OUTSIDE FLORIDAbirds, black and white, cemetery, infrared, sunrise, travel, treeEd Rosack

Indian Springs is about six hours by car from Central Florida. It’s east of I-75 between Macon and Atlanta and well worth the drive. Lynn discovered they have cabins and suggested that we go up for a few days to see if any leaves are changing. They definitely are!

Color

I think peak color will be in a week or so. We get very little fall color in Florida – so it was a treat to see.

The cabins are nice – some of the best we’ve stayed in. They must have been refurbished not long ago. They have two bedrooms, one bathroom, a kitchen, a living room, a screened porch, and are fully furnished. And the location on a gorgeous lake was wonderful. This was the view just a few steps from the back porch:

Good morning (three Frame vertical panorama)

There were other things to see in the park too. This creek runs along the road by the entrance.

Big Sandy Creek (using the new iPhone “Live Long Exposure” mode)

And we spotted this cemetery from the 1800s along the road to the cabins.

At rest in the wood (Infrared)

We saw a few deer and although I didn’t put much effort in, several kinds of birds. We had some fun watching (and listening) to Canada Geese on the lake. I managed to make this video one morning around sunrise. The flock took off just as the sun started to hit the lake.

There are several other places to see in the area. High Falls State Park is just to the east and Piedmont National Wildlife Refuge is to the west. We’ve explored several state parks in Florida, but after this experience, we’re going to expand our target zone! And Indian Springs is definitely on our “go back” list.