Archive | March 2013

Weekend Expedition 8: Return to Reifel!

Cannot resist these cranes! This one was calling.

Cannot resist these cranes! This one was calling.

The Weekend Expedition to Reifel Bird Sanctuary with Wild Research was a fun outing, made better by the good company and great weather. Highlights of the trip were a Great Horned Owl, Saw Whet Owl and American Bittern. Only the Bittern was a cooperative model. I tried a few low angle shots on feeding ducks, but did not have much time to work out the kinks. I think I will try to do more of this in the future, as it is an interesting and humorous perspective.

Below is a selection of the photos…Check out that lovely Bittern!

Cheapskate Tuesday 7: Cheapskate Flash Diffuser Mark II

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*NOTE! The instructions here are great for cutting out a pattern to fit your flash, but check out the Cheapskate Diffuser MKIII instructions for a better method of general construction

 

Adrian Thysse has just announced a macro tools workshop for you Albertans, and Alex Wild has just put up a post about diffusing an MT-24 EX, so the time is ripe for macro flash diffusion discussion. This week’s Cheapskate Tuesday is an overhaul of the Cheapskate Flash Diffuser, essentially transforming it into a small softbox. This update uses the same plastic diffuser material as well as craft “foamie” material.  A glue gun or other adhesive option is also required.

The two chief advantages to this updated device are: 1. the diffusion material stands off several more centimeters from the flash head, so the illumination of the diffuser is more even. 2. The new device is stiff and solid when mounted to your speedlight, so it won’t flop around. The disadvantages are the more complex build, larger folded size, and increased weight (48 vs. 12 g). Another disadvantage is that this is no longer universal, but must be made to fit the dimensions of a particular speedlight. Here I have illustrated a build that would work for a YongNuo 560, 565 or a Canon 580. The generalized schematics to adapt the design to any speedlight are found below. If possible, I will have some shots from the field taken with this soon.

Please follow along below for the essentials on how to construct the Cheapskate Diffuser Mark II. Just like an update to a Canon lens, this Mark II will run you three times the price. So budget around 3 dollars. Because being a PhD student wrecks my brain and hands, I had to rely on my local Master’s Student Catherine Scott to help me out with all the tough geometry, hand modelling and cutting! Pythagoras also helped immensely.

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This “foamie” craft material is the basis for the modification. You will need two black sheets and two white sheets.

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Using the same plastic diffusion material as in the Mk I, mark off 4 cm from each side.

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For the wide sides, cut out the pictured shapes in both the white and black foamie material.

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Same with the narrow sides. Make two in black and two in white.

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8 foamie pieces of four kinds and a marked plastic sheet.

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make creases along the lines previously drawn

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lay down a bead of hot glue along the creased 4 cm

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glue down the black pieces on the corresponding sides. Black goes on the “outside”. Then glue the white pieces on the inside, sandwiching the plastic in between.

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ready for cutting out

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cut out the corners

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cut out velcro to size

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ready to rock

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mounted to the YN 560.

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these schematics are for designing custom diffusers for differently sized diffusion material or a different speedlight. Here is how to measure a flash head and mark off the diffuser material.

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schematic for the larger pieces. Note that B and C are the dimensions from the previous diagram, and that F must be measured.

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schematic for the smaller pieces. First calculate G, and make sure F is the same as measured in the previous diagram.

 

UPDATE!!!!!!!!!!!!!!!!!!!!!!!!!!

found a Camponotus alate in the hallway at school today, so I had an opportunity to test out the CFDMkII

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Weekend Expedition 7: Burnaby Lake Park

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This male Wood Duck seemed agitated, I presume because I was between him and several females.

This week’s Weekend Expedition was a bit of a hurried affair: I wanted to get done and get on the road to return my malfunctioning Canon 60D. This camera was working Saturday night, but when I got up Sunday morning to prepare my gear discovered that my generally reliable camera body would not start. I suspected all manner of grievous harm to the motherboard, and grumpily decided that I would return it for a refund or exchange at the store where I bought it (I had bought the extended warranty).

Because such misfortune can strike at any time, I have a backup body, the Canon 450D (Rebel XSi), which I took on the trip to Burnaby Lake.
While out in the glorious sunshine, seeing the spring springing and the birds and insects becoming active, my mind was still cloudy thinking about my traitorous camera back home. Instead of fully immersing myself in the sight of testosterone-fueled combat between Canada Geese, or sunbathing fireflies, my thoughts were elsewhere, and after a couple of hours I packed up and headed home.

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Several Ellychnia hatchi , large, diurnal fireflies. were sunbathing on exposed bark.

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This Scaphinotus marginatus  (ID courtesy Todd Lawton) was a  new one for me. Generally, the most common Scaphinotus here are the larger Scaphinotus angusticollis. These odd Carabids  are specialist predators of snails, and their elongate rostrums are thought to be an adaptation for extracting them from their shells.

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I did not get a great shot of the behaviour, but the Canada geese are getting their spring on with some feisty combat.

When I arrived back home, I called the store asking about the procedure for returning the camera. While I was waiting on hold, I started idly wiping the battery terminals with some cloth, thinking it might just be a connection problem in the battery compartment. Sure enough, it ended up  being the case that the sole cause of the camera’s mysterious reluctance to boot was dirty contacts on the battery terminals.

Although this Weekend Expedition produced some okay shots, I find that I was dissatisfied with the day. Whereas I had planned a leisurely 4-5 hours ambling around the lake shooting birds and bugs, I ended up truncating the outing, and not really being fully present to make the most of the time I did take.

So there is a lesson in this, I think. While it is important to have a decent lenses and a working body for your expedition, it might be more important to bring a clear mind.

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This Stonefly (ID anyone?) was sunbathing on a railing, and fled from my approach. After a time, it resumed sunbathing, so I could take this shot.

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Even the Chrysomelids were out to soak up the rare Vancouver sunshine .

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Playa.