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Trying to go beyond 2x magnification

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With the prevailing rainy weather in our islands, birding sorties are few and far between. This gives me the opportunity to experiment with my gear,
and try various combinations that might yield interesting results. On this slow day, the Canon 100 2.8 USM macro is the focus of my curiosity. :)
Canon 100 2.8 USM Macro + Sigma 2x TC + stacked Canon 25/12 mm ETs + 40D
KZ2L0022-900x600.jpg

Canon 100 2.8 USM Macro + Sigma 2x TC + stacked Canon 25/12 mm ETs + 40D

 Resized full frame of an SI measuring tape (1 graduation = 1 mm) at just over the minimum focus distance shows a horizontal coverage of about 8 mm. With the 40D's sensor spec'ed at 22.2 mm, this is equivalent to a magnification of over 2.7x lifesize!
IMG_1602-800x533.jpg

Resized full frame of an SI measuring tape (1 graduation = 1 mm) at just over the minimum focus distance shows a horizontal coverage of about 8 mm.
With the 40D's sensor spec'ed at 22.2 mm, this is equivalent to a magnification of over 2.7x lifesize!

 TIP OF A BALL-POINT PEN: 40D + 100 2.8 macro + Sigma 2x TC + 37 mm ET, 1 sec, f/13, ISO 320, MF via Live View, ball head/tripod, resized full frame
IMG_1601-1200x800.jpg

TIP OF A BALL-POINT PEN: 40D + 100 2.8 macro + Sigma 2x TC + 37 mm ET, 1 sec, f/13, ISO 320, MF via Live View, ball head/tripod, resized full frame

 Processed 100% crop
IMG_1601-1000x750.jpg

Processed 100% crop
2-mm Bug: 40D + 100 2.8 macro + Sigma 2x TC + 37 mm ET, 0.60 sec, f/9, ISO 160, MF via Live View, manual exposure in available light (no flash), geared head/tripod.
IMG_1666-1200x900.jpg

2-mm Bug: 40D + 100 2.8 macro + Sigma 2x TC + 37 mm ET, 0.60 sec, f/9, ISO 160, MF via Live View, manual exposure in available light (no flash), geared head/tripod.

 2-mm Bug: 40D + 100 2.8 macro + Sigma 2x TC + 37 mm ET, 1/2 sec, f/11, ISO 160, MF via Live View, manual exposure in available light (no flash), geared head/tripod, resized full frame, camera moved back to get the ruler within frame.
IMG_1663-900x600.jpg

2-mm Bug: 40D + 100 2.8 macro + Sigma 2x TC + 37 mm ET, 1/2 sec, f/11, ISO 160, MF via Live View, manual exposure in available light (no flash), geared head/tripod, resized full frame, camera moved back to get the ruler within frame.


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