Wednesday, April 24, 2019

Panning: How to capture a moving target.

Panning - it can be done with many different subjects.

When something is moving across your field of view, you have two options in terms of capturing its image.  You can use a high enough shutter speed to freeze the thing in place as a moment in time, or you can follow it with a panning technique.  Of the two, I much prefer the panning method.

Panning is relatively simple, but you have to address a few issues if you want to do it properly.  The first, and main point, is that you must turn off any vibration mitigation mode which may happen to be running.  The reason is pretty straight forward; this technology is designed to prevent the camera from moving and you want it to move.

Some cameras / lenses come equipped with a modified vibration mitigation option which allows horizontal movement but reduces vertical changes in position.  This is the best of both worlds, as it allows movements to the left and right with no impact but compensates for any vertical displacement.  This doesn’t work, of course, if you are using a portrait format (shooting with the long axis vertically instead of horizontally), or if you are panning vertically as you may for a rocket launch.

The second thing to consider is the shutter speed to do this with.  There is a diminishing rate of return for quality inversely proportionally to shutter speed.  In English, this means that as the shutter speed decreases it is harder to get a clear image of your transversing subject.  That is because slight changes in position of the subject within your viewfinder will vary more and more, resulting in a blurry image.  Active vibration mitigation will help with this, but its use is somewhat limited.

In short, I like to use shutter speeds between 1/100th and 1/160th of a second.  The problem with this is linked to the fleeing speed of what you are photographing.  Shooting a slow flying bird, a slower shutter speed of 1/30th of a second may be perfect.  A jet airplane taking off, on the other hand, may benefit from a shutter speed of 1/250th of a second, or even faster.

When you are actually panning, it is important to proceed with a solid grip and with complete smoothness.  I like to pay attention to where the subject is in my viewfinder and follow it through its path.  I usually shoot multiple images, knowing that some will be better than others.  I also may turn focus tracking on or at least use continuous focusing to ensure that focus is sharp for the beginning of the exposure.

You will notice I have three images in my photo; you can use the exact same technique whether you are following bird, animal, fish, car, plane, or bicycle.  The method is identical. 

Keep on shooting.       www.ericspix.com

Sunday, April 21, 2019

California quail - persistence pays off.

California Quail photographed early in the morning in Nanaimo, BC.
Two days ago I hiked the trail around Buttertub's Marsh in Nanaimo, BC.  I got a few good shots; the photo I posted previous to this one on the red-winged blackbird was one of them.  As I neared the end of the trail I saw two partridge-like birds.  They were much larger than a robin and were definitely rotund looking.  I saw them briefly and then only from the rear.  There was one feature which stood out, and that was two parallel white lines that started mid back and proceeded towards the tail.  They ducked into some bush as I approached and disappeared completely.  I searched for a few minutes to no avail.  I gave up and moved on.

Back where I was staying I logged onto whatbird.com and placed the parameters I knew into my query.  I was given twelve or so possible suspects.  None of them really did it for me though, and the two parallel lines I saw did not reveal who the culprits were.  Discouraged, but not beaten, I decided I would need to return to the metaphoric crime scene and try to find them again.  This morning I had that chance.

Up at sunrise and loaded for bear (or even a partridge-like bird) I headed out to Buttertub's with the hope of discovering what the elusive bird was.  It was early dawn and the light was modest at best, so I had my camera's ISO pumped up to 3200.  The 600 mm focal length (900 mm relative) would do the job if the subject would cooperate.  A manual shutter speed of 1/125 of a second was the best I could muster, the vibration mitigation system would have to come through in a big way.  And so I retraced my steps from my previous jaunt.

Many of the birds were still tucked away in their roosts when I arrived.  There were not as many visible species or calls as I saw before.  Perhaps my ambitions were premature.  However, I continued the trek and eventually came to the scene where it all took place.  I was not disappointed.  There, on the trail ahead of me, were two birds - the two white lines betraying their identity.  I knew this time what my quarry was, as the bobble atop their heads was clearly visible now.  I got some shots off and managed to capture some decent images, given the dim conditions.

Persistence had paid off.  I am not always so fortunate with such endeavors but am thankful when it does. 

Saturday, April 20, 2019

Red-winged blackbird – a harbinger of spring.

The familiar red-winged blackbird.

Yesterday morning I was treated to the symphony of choruses and warblings so common at this time of year.  Some were unfamiliar to me and I marveled at their beauty.  There were those that I instantly recognized too.  The one which stands out most in my mind is the trill call of the red-winged blackbird.

Winter tends to be much quieter in nature, especially if snow is present.  In the same way that insulation dampens sound through a wall, snow softens sound.  Then there is the fact that many of the choirmasters are absent, away south where warmth and food are both present in abundance. 

With spring also comes its welcome sounds.  Red-winged blackbirds are always warmly regarded by me.  Their song, although somewhat harsh and raspy, is a reminder of a place and time I love.  Ponds, marshes, and lakeshores teem with life.  The males are announcing their presence to nearby females and establishing barriers to neighbours.  Mating, brooding, and raising young are all to come.

Last year I witnessed a remarkable sight.  A large flock of red-winged blackbirds was feeding on the edge of a granary when something disturbed them.  They rose as one, each bird making minute adjustments to its flight based upon what its neighbour was doing.  They were all males, or so it seemed, the red epaulets clearly displayed on each black wing.  Then it happened.

As they lifted and turned the light from the sun caught that brilliant patch of colour and reflected it back to my eyes.  Just a moment in time, but each one was at exactly the right angle at the same instant.  A flash of red, from hundreds of birds in synchronous flight, struck me.  That was something a photo or video could never reproduce with the same vigor.  It was a sight which has been engrained in my mind.

So, now when I see this harbinger of spring and hear it iconic call, I am taken back to that moment.  Another reason why I find this time of year so wonderful.

Saturday, April 6, 2019

Buttertub Bird Santuary, Nanaimo

Male Yellow Rumped Warbler, photographed at Buttertub Bird Santuary, Nanaimo
Bird sanctuaries are more than just safe places for birds; they are habitats for nature.  Given the fact that birds need to eat, it only makes sense that a place that would attract them would have plenty of natural food.  The diet of birds varies widely with the species, but invertebrates, seeds, nuts, berries, and fruits of all descriptions generally works well.  Then there are the more predatory birds that take fish, amphibians, reptiles, small mammals, and even other birds.  You will usually find a source of fresh water as well.  Not just for drinking, but also because a great many things live in the water which birds eat directly or indirectly.

The thing I appreciate about bird sanctuaries is they are often designed in such a way as to give people access to the more distant reaches of them.  Walking paths, beaches, and even boat launches allow you and I to wander at will.  The only thing you are asked to do is to show respect to the environment.  Don't litter, disturb the wildlife, or remove anything.  Keep dogs on a leash and pick up after them.  Take lots of pictures and leave with lots of memories.  It is really rather simple.

What is really amazing about such places though is how they end up being a benefit to us.  Most people do not even recognize this.  Consider the benefits listed below:

  - increased vegetation helps clean the air, remove carbon dioxide, and add oxygen
  - natural water systems like ponds, marshes, and bogs serve as reservoirs that help prevent flooding and removes sediments
  - many of the plants present take up toxins like cadmium and prevent them from getting into our water or food supply
  - communities with natural areas tend to be healthier because they promote activity like walking and gives children a place to explore and run around
  - diversity increases which is extremely valuable in terms of disease resistance.  A small population or a population made of genetically identical organisms are at risk of being decimated in the event of an outbreak of some kind
  - people are given an opportunity to interact with nature experientially rather than through media alone and helps produce environmentally aware citizens

I encourage you to go to a bird sanctuary and enjoy all that it has to offer.  You may be amazed.

Tuesday, April 2, 2019

A nasty eye injury.

Blue and gold Macaw
I chose this image because of the remarkable colour around the eye of the blue and gold macaw.  Certainly the image of this beautiful bird would not have the same allure if its eye was closed, or unfortunately damaged somehow.  Eye damage in any organism living in the wild is often a death sentence.  Anyone who has ever had an eye injury can attest to the concern about reduced or lost vision.  Although the photo is that of a bird, the story I am about to unravel is about me.  To be specific, it is about an eye injury I received two days ago.

The sun has been out in all its glory this last week.  The garden, having been ignored over the winter, was beckoning for attention.  Although all areas required some degree of maintenance, it was the raspberries at the back which were calling the loudest.  Their demands for pruning and securing rose above the silent din of neighbouring herbage.  And so, I got out the pruning sheers and string and began in earnest to placate their prickly cries.

I was wearing my hat and glasses, as is my custom when working outside.  This is especially true on a hot day in full sun as I turn beet-red when left unprotected.  Clipping dead raspberry canes and transferring them to the growing pile was simple enough.  Green shoots protruding from branches clearly allowed me to distinguish the living from the dead.  It was the towering branches and their myriad of prickles which gave me pause.  Each cane, a malevolent arsenal of barbs waiting to take a toll on the offending intruder.

I was about three-quarters done when it happened.  One of my garden sheer strokes caused a branch to thrust towards me.  I find hat and glasses are usually enough, but this stick had eyes of its own and threaded the obstacle course protecting my face.  Not only did it breech the initial security, it managed to thrust its angry member onto my open right eyeball.  My reaction was immediate.

I knew right away I had done something terrible.  I am a bit of a klutz and have poked myself in the eye on multiple occasions.  Usually a few stars followed by some tears occurs and then, after a short reprieve, it is back into action.  Not this time.  My eye was streaming water, not unlike the local mountain creeks channeling the snow melt under the hot sun.  Then there was the pain - wowza!  An impressive crescendo of groans with eye-clutching made an impressive display to the neighbours.

Eyes closed with millisecond bursts of vision, I went inside and plied my story to anyone who would listen.  I rinsed my eye out with water and attempted to open it; the pain was as bad as ever.  My daughter took me to the hospital.  No seats were available.  I sat on the floor.  More good news.  There I waited for six hours, eyes closed the whole time.  Let me tell you, suffering the acute pain in darkness with no ability to access phone or book left me with lots of time to ponder possible outcomes.  Finally my name was called and I walked, left eye barely open, down to where a doctor would see me.

Thankfully I got a prescription for antibiotic drops and the first good news that, although I ripped my cornea, it would heal and not affect my vision.  I eventually got home, went to bed, and found that I was actually doing OK the next morning.  Now, two and a half days after the damage, I barely notice the injury.  I guess I will be fine.  A close call to be sure.

Thursday, March 28, 2019

Albino Canada Goose.

A pair of Canada Geese; one albino and one not.
It is not every day that you see something like this.  Out on a hike in the spring, a favourite time to be photographing wildlife, I came across an unusual sight.  A pair of Canada geese, but something was very different.  One was mostly all white.  My first reaction was to think it was some species of bird I was unfamiliar with.  Perhaps it was a domestic goose, the same way you find white ducks sometimes on a farm.  As I pondered on what it was, the only real solution was to take a few photos of it and check it out later.

This is something I do frequently when coming across some creature I do not know.  A photo gives me clear information on an organism's size, colours, and important field marks.  I usually take several images which help me to see more aspects of important features.  Once I have gotten home I go through the images and select ones that help with the process of identification.  First, I go through my field guides.  I have a lot of them, mostly of birds, but also of insects, reptiles, amphibians, mammals and even rocks.  If that doesn't do the trick I go online.

This was a special case though, and as I eliminated the plausible the unlikely started to become more probable.  Could this be an albino?  You see albino mice and rats in pet stores; their red eyes glowing back at you.  There are albino snakes and even albino humans.  This creature did not have red eyes, but albinos in nature tend not to.  I typed in "albino Canada goose" in Google and hit the images button.  There before me was a number of pictures of this unusual creature.

Melanin is the pigment in the skin which gives it colour.  Albinism is a condition where the gene responsible for making the protein is defective.  It is a recessive disorder, meaning that an individual has to have both genes, one from mom and one from dad, coding for that trait.  An organism can have one gene for albinism and one unaffected gene; they would appear normal but be a carrier.  If two such creatures mated and produced offspring, there is a 1 in 4 chance that each of them would be an albino.

In all of the thousands of Canada geese I have seen, only one of them was an albino.  A wonderful example of diversity in nature.  I wonder how many other fascinating traits there are which tend to go unnoticed?

Tuesday, March 19, 2019

Common Loon at Camp Nakamun, Alberta.

A mating pair of Common Loons.
I have had the pleasure of going to Camp Nakamun four times now.  Both my kids, Josh and Leanne, have worked there.  My son found his love there and was married there.  Besides all that, it just happens to be a great place to visit.

Wherever I am, I always have my camera in hand and look for an opportunity to get some photos.  One of my visits there was in early summer.  There is an abundance of water birds present at this time.  This includes an assortment of ducks, grebes, sandpipers, and at least one breeding pair of common loons.  Many of the birds seem somewhat acclimatized to people as they let me approach closer than what would otherwise be possible. 

I have photographed loons in a number of places, but have never had the opportunity to get as close as I did here.  What was great was that, as I approached, they seemed to be without concern as they paddled along in front of my kayak.  Once at a decent distance, I just waited.  They eventually swam right in front of me. 

The photo you see above is not cropped to facilitate an enlargement.  It was pretty much that way in my viewfinder.  Keep in mind though I used an APS-C sensor sized DSLR with a 150-600 mm lens on zoomed all the way out.  So the relative focal length was 900 mm, which is approximately equivalent to a magnification of 18x.  I made a 16x20 inch print of it and donated it to the camp.

 I love to sit quietly and watch when nature shows up.  Sometimes you have to go out of your way to find it, other times it just happens in front of you.  Loons are remarkable birds.  They are one of the few species of flying birds that have solid bones instead of hollow ones.  This makes them denser than their relatives and gives them the ability to dive to remarkable depths.  Loons also have their feet set farther back than most other waterfowl, a fact which further facilitates their swimming prowess.  It also explains why you usually don't see them on land; for them, walking is for the [other] birds.