Submitter's name:	Eric Pederson
Title:	Decaying stump
Gear used:	OM-4Ti + Tamron (sorry) 300mm 5.6 + UV2 filter + tripod + prefire
Diaphragm:	f11
Shutter speed:	1 sec (approx, Auto exposure)
Film used:	TMX at EI 80, Dev in TMax 1:4
Technical information:	Pretty simple photo. The main challenge was to not slide down the slope on my side of the gap I was shooting across. Very difficult to estimate D.O.F. Stump was in full shadow with dappled sunlight behind, so I spot metered a light area on the stump and set that for +0 exposure compensation. Scanned print on HP5300 Series flatbed scanner. All the printing information (e.g. contrast grade, Selenium toning concentration) is pretty irrelevant for the degraded image you see on the web. I slightly raised the highlights on the scan to compensate for the loss of detail. You can't really tell from the scan, but I heretically find the Tamron bokeh of the highlights to be reasonably pleasing, so the temptation to acquire a Zuiko 300mm has been low. The sharpness of the print is acceptable at 8x enlargement, though not stunning. Roughly comparable to my Zuiko 200mm f4, poorer than my Zuiko 135mm f2.8.
Subject information:	The stump was probably about 3 meters long. I decided just the tip was the more photographically interesting. I also rotated the angle it jutted out at, since I expected the background to not reveal true vertical orientation.
Location:	Fall Creek, Willamette National Forest, Oregon, USA.
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Comment left by: bbbean (bbbean@beancotton.com)

6 sided aperture?

Comment left by: Eric Pederson (epederso@darkwing.uoregon.edu)

The Tamron has a 9-sided aperature. Almost round; like the Zuiko 90mm Macro (and probably others). Is there a list of number of aperature blades somewhere?

Comment left by: siddiq (no e-mail specified)

for zuikos you mean? yes: Farrar Zuiko Page eSIF

Comment left by: Jay Maynard (jmaynard@conmicro.cx)

The bokeh here doesn't detract from the image at all. I don't konw if I'd have shot this one vertically or not, but it works as it is.

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