Blue eyes by Erik Aaseth

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18.09.2009	© Erik Aaseth

Male Moorland Hawker (Aeshna juncea).
Note the typical thick-stemmed black "T" on its frons (face), and the yellow leading edges on its wings.

Olympus E-3 ,Olympus Zuiko Digital ED 50-200mm f2.8-3.5 SWD ,Olympus Zuiko EX-25
@137mm, F8.0, 1/8s IS1, ISO 100, EV -0.3, tripod full exif

other sizes: small medium large original auto

Erik Aaseth		12-Jan-2012 09:44
@mailman: Specs for the Zuiko 50-200 SWD: http://asia.olympus-imaging.com/products/dslr/lenses/50-200_28-35swd As shown its closest focus is 1.2m, yielding a max magnification of 0.21x (equals 0.42x on a FF camera), which translates to a minimum field size of 81 x 61mm. W/ a TC-20 you will get twice the magnification; 0.42x, (equals 0.84x on a FF camera), and half the field size (40,5 x 30.5mm). Here's the Zuiko compatibility list for the EX-25 extension tube: http://www.olympus.co.jp/en/support/imsg/digicamera/compati/di004042e.cfm#tl As you can see the 50-200 (almost at the bottom of the page) yields magnification ranging from 0.12x to 0.49x, depending on the focal length (FL) used. But the maximum magnification can get up to 0.49x at 50mm FL (equals 0.98x on a FF camera), which is slightly more than you will achieve w/ the EC-20. But at 50mm FL + EX-25, your working distance will only be approx. 28cm, as opposed to 1.2m w/ EC-20. So if the insect is shy, sometimes the EC-20 is the better option. But then again, it steals 2 F-stops of light, which gives a longer shutter speed, which again is not good for close-up/macro photography... So like always, it's a give and take. Just pick your poison! ;)

Guest		10-Jan-2012 18:26
Would you be able to get as close using a TC-20 or is the EX-25 better? Beautiful photos by the way. Owen

Joep Krijnen		26-Dec-2009 21:19
This beautyfull Moorland Hawker(Venglazenmaker in Dutch) is very rear in the Netherlands. I hope I will find one soon otherwise I must come to Norway to find myself one ore actualy two, this male and the even more beatyfull (I think so)female. This is your best picture of the Moorland hawker Eric, the other two are beautyfull pictures but the spieces are not fresh anymore.

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