Blue Tiger Moth - Dysphania palmyra

Even though that evening was drizzling I was trying to photograph Black Drongos (Dicrurus macrocercus) which were busy catching insects during late evening. Light was fading but my new Canon EF 300mm f/2.8L IS lens was able to get many pictures albeit in slower speed. As I came back to my In-laws house I saw this day flying moth which flew and sat on the metal box outside their home.

Even though I was not able to reach the box which was sufficiently high I got my trusty rig of Canon EF 100mm f/2.8L Macro IS USM on Canon EOS 5D mark II fitted with ExpoImaging Ray Flash Adapter on Canon Speedlite 580EXII Flash out to shoot this moth. The metal box where it was sitting was a rusty one. The biggest challenge was to reduce the reflection of the flash from the metal box. The ring flash adapter helped me by diffusing the light evenly to produce a pleasant lighting.

Blue Tiger Moth - Dysphania palmyra

This is a very common moth we see around here. It is also one of the few day flying moths as most moths fly in the dark hours of night. It is called by various names as Blue Tiger moth, Four O’clock Moth, Peacock Jewel moth. This Dysphania palmyra species of moth belongs to the Family Geometridae. The inch worm caterpillar which I posted a year back belong to the same family of moths.

Many Geometrids have slender abdomens and broad wings which are usually held flat with the hindwings visible. As such they appear rather butterfly-like but in most respects they are typical moths: the majority fly at night, they possess a frenulum to link the wings and the antennae of the males are often feathered. They tend to blend in to the background, often with intricate, wavy patterns on their wings. In some species, females have reduced wings and are flightless (e.g. winter moth and fall cankerworm).

Most are of moderate size, about 3 cm across but a range of sizes occur. They have distinctive paired tympanal organs at the base of the abdomen (lacking in flightless females).

Blue Tiger Moth - Dysphania palmyra

The name Geometer (earth-measurer) refers to the means of locomotion of the larvae or caterpillars, which lack most of the prolegs of other Lepidopteran caterpillars. Equipped with appendages at both ends of the body, a caterpillar will clasp with its front legs and draw up the hind end, then clasp with the hind end (prolegs) and reach out for a new front attachment – creating the impression that it is measuring its journey. The caterpillars are accordingly called loopers, spanworms, or inchworms. They tend to be green, grey, or brownish and hide from predators by fading into the background or resembling twigs. Some have humps or filaments (see Filament-bearer image). They are seldom hairy or gregarious. Typically they eat leaves. However, some eat lichen, flowers or pollen. Some, such as the Eupithecia, are even carnivorous.

Blue Tiger Moth - Dysphania palmyra

Female Common Mormon - 100mm macro

After I got my Canon EF 300mm f/2.8L IS USM lens, I wanted to use it as single lens for both birding as well as macro. I have used Canon EF 300mm f/4.0L IS USM successfully in the past and got pretty good result. It was a great macro lens but the reach for bird photography was not there as its performance 1.4x teleconverter was average. 2.0x convertor was bad. f/2.8 lens was great with both these convertors and remained as sharp as original. This prompted me to try it as single all in one lens.

As a test I tried shooting female Common Mormon Butterfly (Papilio polytes)sitting on rose leaves during rain. You can check the details about the butterfly in article Male Common Mormon Butterfly.

The photo on the top shows my presently favored approach. It is shot using Canon EOS 5D Mark II with Canon EF 100mm f/2.8L IS II USM using ExpoImaging Ray Flash Adapter on Canon Speedlite 580EX II Flash. The exposure using flash ring adapter gave a nice even light and ISO 200 with aperture of F/14 produced nice deep (in macro terms) depth of field. I was working nearly a feet away from the butterfly. Some insects get intimidated by such proximity of humans and it is difficult to capture them. If you notice the flash also made the background dark as the ambient light was very low. This can help to isolate your subject from cluttered background. But it also produces an unnatural look to the photo. Some shy critters will not allow you to approach this close.

Female Common Mormon - 300mm f/2.8

Here in my second photo I used Canon EOS 7D with Canon EF 300mm f/2.8L IS USM Lens on Canon EF 1.4x II Extender. The light was pretty low as it was raining heavily. So I used ISO 3200 to get hand holdable speed of 1/180th of second exposure at f/4 aperture. This setup gave me a sufficient working distance of around 3 meters from butterfly. I was standing under shade of roof and shooting this butterfly which was protecting my gear from rain. The safe distance allows you to get those shy type of critters easily.

There is price to pay for this comfort (I am not talking about the price of the lens here ) The lens is heavy, depth of field is very shallow. As you can see at f/4 aperture which was possible under the existing light butterflies antennae are out of focus even though the eyes are. Since the camera is far off I can’t use the flash and ring adapter to light up also. I can now use the naked Canon Speedlite 580EX II Flash to throw as much light at the subject. Light reaching subject will be low. I can use either Better Beamer flash extender to concentrate the light on the butterfly or I can keep the flash off camera close to the subject. In the field this is difficult to achieve with fast moving subjects.

As you can see there is no easy shortcut to take for macro photography. Dedicated macro lens has advantages and several plus points. Using such an lens can achieve a great magnification and closeup shot of the subject. In the future blogs let us see how we can use extension tubes to alter minimum focusing distance and thus increasing magnification.