Black Jumping Spider

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Walter Piorkowski
Posts: 693
Joined: Mon Aug 14, 2006 6:42 pm
Location: South Beloit, Ill

Black Jumping Spider

Post by Walter Piorkowski »


Canon 10D
50mm Fujinon lens reversed on extention tubes
109 images at .005 inch increments
tent lighting
Combine ZM , Photoshop

I haven't been looking at the forum for a while and didn't know so many excellent spider images were up. Especially Charles's crab spider. But I just finished this so here we go again.


Ken Ramos
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Location: lat=35.4005&lon=-81.9841

Post by Ken Ramos »

A hundred and nine images :roll: I gotta give it you Walt, your a guy with a lot of patience :lol: You did good though, excellent photo of the jumper. Must be spider week here on the forums, posted a couple myself. :wink:

Site Admin
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Post by rjlittlefield »

Lookin' good, Walt! :D

109 images at 0.005" does seem like a bit of overkill for this subject, but that could just be because I don't know how big the subject is. I did one that looks superficially similar in 46 images at 0.015", here. Yours may be quite a bit smaller, in which case your numbers may be just perfect.

I'll risk a reminder that if shooting or processing time is an issue, it's often worth running some setup experiments to see how exactly what you can get away with. When I'm in a new situation -- either subject size or lens -- what I do is to experiment with aperture until I figure out how far I can stop down and still get the resolution I want, then I take a short sequence with fine focus steps to figure out how far I can step and still get everything sharp in at least one frame. After I know those two things, then I figure out how long the real sequence is going to be. If it's tolerably short, I shoot it; if it's intolerably long, I go back and rethink whether to stop down farther (thus losing resolution), or perhaps lop off some focus range.

Switching subjects, which CombineZM options did you use on this?


Walter Piorkowski
Posts: 693
Joined: Mon Aug 14, 2006 6:42 pm
Location: South Beloit, Ill

Post by Walter Piorkowski »

Thanks Ken and Rik. You may well be right that this is overkill but I wanted to stay on familiar ground. My first good image with this lens was at this increment but at f/8. This image was at f/3.5 so I felt the shallower depth of field warranted it. Besides, I have found that shooting at wider F/ratio settings actually lowers the number of exposures needed because there is a cleaner start and stop zone.

The large number of exposures was due to the length of the subject. This jumper is of the larger variety, maybe ½ inch diameter rear toe to front toe. Regarding Combine ZM, I used the Do Stack macro. I did a second closer shot of the same subject and did the processing in both “Do stack” and the newest macro weighted average correction. The later produced an unacceptable image that I can show a comparison on in your technical section when I have time.


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Post by beetleman »

An excellent stack Walt. A beautiful spider.
Take Nothing but Pictures--Leave Nothing but Footprints.
Doug Breda

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