Archive for the ‘Godox X2To/p’ Category

MYN – Clubtail exuvia (species unknown)

April 15, 2020

An Anisoptera exuvia was collected by Freda van den Broek on 10 June 2019 along the Red Cedar River in Barron County, Wisconsin USA.

This specimen is definitely a member of Family Gomphidae (Clubtails), possibly Midland Clubtail (Gomphurus fraternus).

10 JUN 2019 | Barron County, WI | Anisoptera exuvia (dorsallateral)

Tech Tips

This subject was photographed against a pure white background (255, 255, 255) using the “Meet Your Neighbours” (MYN) technique.

During this photo shoot, I tested the Flash Diffuser Light Softbox by Altura Photo (6″ x 5″) for the first time. This relatively inexpensive softbox ($12.99) is highly recommended by Allan Walls, an excellent photographer who specializes in macro photography. I must admit I was more than a little skeptical but the diffuser seems to work as advertised and is a remarkable bargain, unlike my expensive Lastolite softbox flash modifiers (8.5” x 8.5” square).

The 1:1 rule-of-thumb is used to determine how close/far to position a flash unit from the subject. The diagonal distance across the face of a softbox should be the distance to the subject [or less] for soft wrap-around light. Actually, the distance should be as close as possible without the softbox showing in the photo frame. Greater distances will result in a contrasty look.

For example, my new Altura softbox is a 6” x 5” rectangle (7.8” diagonally) so it should be positioned ~8″ or less from the subject. Buyer beware: This distance is OK for macro photography but not OK for most other types of photography.

Related Resources

Copyright © 2020 Walter Sanford. All rights reserved.

MYN – Eastern Amberwing exuvia (anal pyramid)

March 9, 2020

An Eastern Amberwing dragonfly (Perithemis tenera) exuvia was collected by Joe Johnston on 07 August 2019 along Aquia Creek at Channel Marker No. 34, Stafford County, Virginia USA.

The specimen is probably from either Family Corduliidae (Emeralds) or Family Libellulidae (Skimmers).

The rule of thumb for differentiating Corduliidae exuviae from Libellulidae is as follows: It’s probably Corduliidae if the cerci are at least half as long as the paraprocts; it’s probably Libellulidae if the cerci are less than half the length of the paraprocts.

65mm (3x magnification) | ISO 100 | f/8 | 1/200 s | 0 ev

Look closely at the full-size version of the preceding photo, showing a close-up of the anal pyramid at 3x magnification. Notice the cerci are approximately half as long as the epiproct and slightly less than half the length of the paraprocts. It’s a close call, but the latter field mark indicates Family Libellulidae (Skimmers).

A step-by-step identification guide (to the species level) will be published in a follow-up post. Stay tuned!

Related Resources

Copyright © 2020 Walter Sanford. All rights reserved.

MYN – Pantala hymenaea exuvia

December 16, 2019

An odonate exuvia was photographed against a pure white background using the “Meet Your Neighbours” (MYN) technique.

This specimen is a Spot-winged Glider dragonfly (Pantala hymenaea) exuvia. Spot-winged Glider is a member of Family Libellulidae (Skimmers).

Genus Pantala

The genus Pantala includes two species in North America: Spot-winged Glider (Pantala hymenaea); and Wandering Glider (Pantala flavescens).

Spot-winged Glider and Wandering Glider larvae/exuviae look similar. The lateral spines on abdominal segment nine (S9) are noticeably shorter for P. hymenaea (shown left) than P. flavescens (shown right) — a key field mark that can be used to differentiate the two species.

The Backstory

Both specimens featured in this blog post were collected (near Richmond, Virginia USA) and identified by Andy Davidson. Andy is a graduate student at Virginia Commonwealth University working on a research project entitled “Predator-Prey Interactions in a Changing World.”

Related Resources

Copyright © 2019 Walter Sanford. All rights reserved.

Luminous beings are we…

December 13, 2019

Master Yoda’s explanation of the Force to Luke Skywalker (see Related Resources, below) features the following memorable quote.

Luminous beings are we,
not this crude matter.

One of many reasons I like the “Meet Your Neighbours” technique for photographing natural subjects against a pure white background is that it seems to reveal the luminous beings that odonate exuviae are. Feel the force by looking at the full-size version of the following image.

Related Resources

Tech Tips

I added a Raynox DCR-250 close-up filter to my Panasonic Lumix DMC-FZ300 24x superzoom bridge camera for a closer view of the anterior of the odonate exuvia.

The camera was set for 1-Area Focusing. The focus-and-recompose technique was used to focus on the eye of the subject.

Godox X2To/p wireless flash trigger for Olympus and Panasonic was used to fire two off-camera flash units.

  1. A Godox TT685C Thinklite Flash for Canon Cameras (manual mode), fitted with a “Vello Bounce Dome (Diffuser) for Canon 580EX II Flash,” was used to light the underside of the translucent white plastic background; the top of the flash unit was ~30 cm from the bottom of the white plastic.
  2. Godox TT685o/p Thinklite Flash for Olympus/Panasonic Cameras (manual mode), fitted with a Lastolite Ezybox Speed-Lite 2 flash modifier, was used to light the subject from above.

Copyright © 2019 Walter Sanford. All rights reserved.

Puzzle solved: Anax junius exuvia (female)

December 11, 2019

Identifying odonate exuviae is a lot like solving a jigsaw puzzle — eventually all of the puzzle pieces fit together to reveal a clear picture. As it turns out, while I’ve been experimenting with the “Meet Your Neighbours” technique for photographing natural subjects against a pure white background, I was also collecting puzzle pieces that would enable me to identify the dragonfly exuvia.

A two-step process was used to identify the genus and species of the specimen featured in my last two blog posts.

  1. Determine the family.
  2. Determine the genus and species.

Step 1. Family

First, determine the family of the specimen. For reference, watch the excellent Vimeo video, Identifying dragonfly larva to family (8:06). Here’s the decision tree I used to identify the exuvia as a member of the Family Aeshnidae (Darners).

  • The specimen has a flat labium that doesn’t cover the face (not mask-like), as shown in Photo No. 1.
  • Antennae are thin and thread-like (not club-like, as in Gomphidae larvae), as shown in Photo No. 1.
  • Eyes are large relative to the size of the head, as shown in Photo No. 1 and 4.

No. 1 | Common Green Darner (Anax junius) | exuvia (face-head)

Step 2. Genus and species

As shown in Photo No. 2 and 4, lateral spines along abdominal segments seven, eight, and nine (S7-9) indicate the genus is Anax.

No. 2 | Common Green Darner (Anax junius) | exuvia (ventral view)

At this point, you know the species could be either junius (Common Green Darner dragonfly) or longipes (Comet Darner dragonfly). The species is determined by the shape of the palpal lobes (part of the prementum) and the length of the specimen.

No. 3 | Common Green Darner (Anax junius) | exuvia (ventral view)

Notice the palpal lobes are rounded, as shown in Photo No. 3. The specimen is ~4.7 cm (~1.9 in) in length, not counting a slight bend in the body.

No. 4 | Common Green Darner (Anax junius) | exuvia (dorsal view)

The rounded shape of the palpal lobes (see Photo No. 3) plus the length of the specimen (see Photo No. 4) indicate the species is juniusAnax junius is one of the more common species of Aeshnidae found in Northern Virginia.

Finally, the rudimentary ovipositor shown in Photo No. 2 indicates this individual is a female.

Related Resource: Anax junius exuvia, another photo-illustrated identification guide by Walter Sanford.

Copyright © 2019 Walter Sanford. All rights reserved.

Meet Your Neighbours – Aeshnidae exuvia (face)

December 9, 2019

An odonate exuvia was photographed against a pure white background using the “Meet Your Neighbours” (MYN) technique. Yep, this time the background is actually pure white (255, 255, 255). Now that’s the look for which I was striving!

36.1mm (200mm, 35mm equivalent) | ISO 100 | f/7.1 | 1/800 s | 0 ev

This specimen is an unknown species from the Family Aeshnidae (Darners), probably Common Green Darner (Anax junius). Compare/contrast the “MYN look” with a more traditional photo set of another A. junius exuvia.

Related Resources

Tech Tips

I added a Raynox DCR-250 close-up filter to my Panasonic Lumix DMC-FZ300 24x superzoom bridge camera for a closer view of the face/head of the odonate exuvia.

A Godox X2To/p wireless flash trigger for Olympus and Panasonic was used to fire an off-camera Godox TT685C Thinklite Flash for Canon Cameras (manual mode) fitted with a Vello plastic bounce dome diffuser. This flash unit was used to light the underside of the translucent white plastic background; the top of the flash unit was ~20 cm from the bottom of the white plastic. No other flash units were used to shoot the photo.

Although I own better camera gear for shooting macro photos, I like to use my smaller, lighter DMC-FZ300 for proof-of-concept experimentation with new techniques. Look for a transition to one of my Fujifilm- or Canon macro rigs in the near future.

Copyright © 2019 Walter Sanford. All rights reserved.

Meet Your Neighbours – Aeshnidae exuvia

December 4, 2019

An odonate exuvia was photographed against a pure white background using the “Meet Your Neighbours” (MYN) technique. Well, almost pure white. More about that later.

9.9mm (55mm, 35mm equivalent) | ISO 100 | f/7.1 | 1/60 s | 0 ev

This specimen is an unknown species from the Family Aeshnidae (Darners), probably Common Green Darner (Anax junius). Compare/contrast the “MYN look” with a more traditional photo set of another A. junius exuvia.

Take-aways

The MYN technique seems to be simple and straightforward. It isn’t. The challenge is to get the translucent effect without blowing out the thinner parts of the specimen like eyes, legs, etc. In this case, I needed a little separation between the pure white background and the exuvia in order to reduce blow-out. I repurposed the top of a small plastic container from the local delicatessen as the separator. I placed the plastic top on the white background, and the exuvia on the top. The plastic top isn’t perfectly clear, resulting in an off-white background color.

I need to experiment further to refine the technique. A clear glass- or plastic plate should solve the problem with the less than pure white background, and I think more separation between the white plastic background plate and the clear glass/plastic “stage” should help to further reduce blow-out. Trial and error — that’s the way we learn!

Related Resources

Tech Tips

The test photo featured in this post was taken using my Panasonic Lumix DMC-FZ300 24x superzoom digital camera, Godox X2To/p wireless flash trigger for Olympus and PanasonicGodox TT685o/p Thinklite Flash for Olympus/Panasonic Cameras (manual mode) fitted with a Lastolite Ezybox Speed-Lite 2 flash modifier, and a Godox TT685C Thinklite Flash for Canon Cameras (manual mode) fitted with a Vello plastic bounce dome diffuser.

The Godox TT685-series flash head is the same size as a Canon 580EX II Speedlite so slide-on plastic light modifiers that work with a 580EX II will work with TT685s. That said, some work better than others. The “Sto-Fen Omni-Bounce OM-EY” is a tight fit — too tight in my opinion. The “Vello Bounce Dome (Diffuser) for Canon 580EX II Flash” is a perfect fit.

The camera lens was set close to “Wide Macro.” 1-Area Focusing and Spot Metering was used for the photo.

Three external flash units were used to light the scene. The flash power ratio for each flash is critical for proper exposure. Begin by setting the backlight, then add the key light(s) on the subject.

The flash unit used to light the underside of the translucent white plastic background (Group A) was set for 1/8 power; the zoom was set for 50mm in order to spread the beam of light sufficiently to avoid a hotspot on the white plastic background. The top of the flash unit was ~20 cm from the bottom of the white plastic.

Two key lights (Group B and C) — that is, the flash units used to light the top of the subject — were set for 1/16 power and 1/128, respectively. In order to reduce blow-out (see Take-aways, below), I turned off the flash in Group C.

Adobe Photoshop CC 2017 was used to sharpen the final output.

Copyright © 2019 Walter Sanford. All rights reserved.

Meet Your Neighbours – “Lizzie”

December 2, 2019

A toy dinosaur lizard was photographed against a pure white background using the “Meet Your Neighbours” (MYN) technique.

4.5mm (25mm, 35mm equivalent) | ISO 100 | f/7.1 | 1/60 s | 0 ev

Take-aways

The MYN technique seems to be simple and straightforward. It isn’t. I need to experiment further to refine the technique. But hey, I say not bad for a beginner!

Related Resources

Tech Tips

The test photo featured in this post was taken using my Panasonic Lumix DMC-FZ300 24x superzoom digital camera, Godox X2To/p wireless flash trigger for Olympus and PanasonicGodox TT685o/p Thinklite Flash for Olympus/Panasonic Cameras (manual mode) fitted with a Lastolite Ezybox Speed-Lite 2 flash modifier, and a Godox TT685C Thinklite Flash for Canon Cameras (manual mode) fitted with a Vello plastic bounce dome diffuser.

The Godox TT685-series flash head is the same size as a Canon 580EX II Speedlite so slide-on plastic light modifiers that work with a 580EX II will work with TT685s. That said, some work better than others. The “Sto-Fen Omni-Bounce OM-EY” is a tight fit — too tight in my opinion. The “Vello Bounce Dome (Diffuser) for Canon 580EX II Flash” is a perfect fit.

The camera lens was set for “Wide Macro,” with a focus range from 1 cm (0.39 in) to infinity. 1-Area Focusing and Spot Metering was used for the photo.

Two external flash units were used to light the scene. The flash power ratio for each flash is critical for proper exposure. Begin by setting the backlight, then add the key light on the subject.

The flash unit used to light the underside of the translucent white plastic background was set for 1/8 power; the zoom was set for 50mm in order to spread the beam of light sufficiently to avoid a hotspot on the white plastic background. The top of the flash unit was ~20 cm from the bottom of the white plastic.

The key light — that is, the flash unit used to light the subject — was set for 1/2 +0.7 power. In retrospect, I know that one or more additional flashes for lighting the subject should be added to the set-up.

Adobe Photoshop CC 2017 was used to sharpen the final output.

Copyright © 2019 Walter Sanford. All rights reserved.

Testing off-camera lighting configurations

November 27, 2019

I spent some time in the BoG Photo Studio experimenting with off-camera lighting configurations for macro photography using the pass-through hot shoe camera rig described in a recent blog post.

Both photos feature “Lizzie,” my toy dinosaur-lizard. Lizzie is one of my favorite models.

The soft, diffused lighting in the first photo is mostly even, with relatively little contrast between light and shadow. As a result, the photo looks a little flat.

The soft, diffused lighting in the last photo shows more contrast, achieved by repositioning one of the two small flash units on my Canon MT-26EX-RT Macro Twin Lite. The juxtaposition of light and shadow seems to convey a greater sense of depth than the flat lighting in the first photo.

Now that I have figured out a lighting configuration that works, I will substitute a different “model” for Lizzie. I have learned from experience that it’s better to use a rugged toy like Lizzie for testing purposes, rather than one of the fragile scientific specimens that I like to photograph. Choose a test subject that is about the same size as your intended subject.

Tech Tips

The equipment used to shoot the macro photographs (shown above) is described in a recent blog post entitled Pass-through hot shoe. Two off-camera external flash units were added to the rig: a Godox TT685o/p Thinklite Flash for Olympus/Panasonic Cameras; and a Godox TT685F Thinklite TTL Flash. Both Godox flash units were fitted with a Lastolite Ezybox Speed-Lite 2 flash modifier.

All of the external flash units were set for manual mode, including the Canon MT-26EX-RT Macro Twin Lite. The Godox off-camera flashes were fired by a Godox X2To/p radio flash trigger mounted on top of my camera; the Canon flash was triggered synchronously by the pass-through hot shoe on the X2To/p.

I shot JPG plus RW2 (Panasonic’s proprietary raw format). Both photos in this post are unedited JPGs straight from the camera.

Copyright © 2019 Walter Sanford. All rights reserved.

Cross-compatibility of Godox TT685-series flashes

November 20, 2019

The following quick-and-dirty video is a demonstration of the cross-compatibily among Godox TT685-series external flash units, including a Godox TT685F, TT685o/p, and TT685C (shown from left-to-right). All three flash units were test-fired using Godox X2TF and X2To/p radio flash triggers.

Notice the brand of flash trigger used to fire the flashes appears in the lower-left corner of the LCD on each flash. The beginning of the video shows all three flash units had been fired by a Godox X2TF (for Fujifilm) set for TTL mode. Think about that — now the TT685o/p (center) and TT685C (right) “think” and operate like the Fujifilm-compatible flash (left). Incredible!

Next I switched to a Godox X2To/p (for Olympus and Panasonic), changed the mode to Manual (M), and test-fired the flashes.

Take-aways

The cross-compability of Godox TT685-series flashes makes these relatively inexpensive, well-made flashes an even better value. By buying wisely it’s possible to assemble an array of flashes that provides maximum flexibility. Bravo, Godox!

Editor’s Commentary

You know, I actually had a vision of how I wanted this video to turn out before I started shooting. Let’s just say my vision wasn’t realized. I like to think I’m a fairly good photographer; videographer, not so much. Perhaps I’ll re-do the video when I’m not as pressed for time as I was for this iteration.

Copyright © 2019 Walter Sanford. All rights reserved.


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