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Topic Closedbugs and spiders...episode 3

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Wētāpunga View Drop Down
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Direct Link To This Post Topic: bugs and spiders...episode 3
    Posted: 01 March 2008 at 05:57


Variation on the cicada shot. Less CA in this one.
a7riii, a9- Voigtländer 15/4.5, 110/2.5 M; Zeiss Loxia- 21/2.8, 35/2, 50/2 & 85/2.4, Zeiss Batis- 85/1.8 & 135/2.8; Sony 24-105/4 G; Sigma 70/2.8 M; Tamron 150-500 f5-6.7; Sony SAL 135/2.8 STF
 



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twb119 View Drop Down
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Direct Link To This Post Posted: 04 March 2008 at 19:42
This time of the year pockets of eastern lubber grasshopper (Romalea microptera) crop up, they are thousands in a 2-3 yard area (2-3 meter close enough) acasionally 3 to 4 times larger area and numerous, they turn into a large 2 to 3 inch (6 to 8cm) yellow grasshopper by the summer.
Their bright color pattern is a warning to predators that the lubber contains toxic substances. There are several records attributing the demise of individual birds to failure to exercise caution when selecting prey items. Also small mammals such as opossums have been known to vomit violently after ingesting a lubber, and to remain ill for several hours.
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Edited by twb119 - 04 March 2008 at 19:46
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jagged View Drop Down
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Direct Link To This Post Posted: 09 March 2008 at 23:44
Found a small jumping spider, around 3.5mm long, with beautiful eyelashes

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#4

Sony a100, Tamron 90/2.8 + extension tubes
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Direct Link To This Post Posted: 10 March 2008 at 00:36
Nice shooting jagged!
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jagged View Drop Down
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Direct Link To This Post Posted: 20 March 2008 at 10:36
Last night I had a go at focus stacking using CombineZ - I found a spider (6-7 mm body length) who was happy to stay still long enough to take a stack of eight shots at different depths.

This is the first time I've had any reasonable results from focus stacking - in the past I've tried it with images taken through a microscope with a modified webcam but I think the jpeg artifacts interfered with things too much.

So this spider is fairly sharp throughout - but now I'm not too sure whether I actually like the effect! I wonder if it makes the photo a bit 'busy', without DOF cues to guide the eye to a particular point of interest.

I'd be interested to hear other people's views.


Sony a100, Tamron 90/2.8, Stacked with CombineZ
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Direct Link To This Post Posted: 20 March 2008 at 10:49
Originally posted by jagged jagged wrote:


I'd be interested to hear other people's views.


The stacking certainly worked well. I think the effect is fine, though the shallow DOF on macros can be used positively as well. I think it's the lighting on this particular shot that makes it a bit busy - the flash highlights and shadows.

When I've tried stacking before (manually in Photoshop), I found that the magnification changed with different focus points, so it was quite hard to match the different frames together. I'm not sure how lens-specific that is though - did you notice it with yours? Is that something that CombineZ takes care of?

This shot was stacked from 3 shots, if I remember correctly, taken with the plastic fantastic:


(Click on the image for larger version - didn't want to post it here because it's not a bug or spider part 3 :-))
 



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Direct Link To This Post Posted: 20 March 2008 at 11:05
It's interesting to compare the effect of CombineZ on the spider v. the leaf. Agree with both of you on the spider looking too "busy" but the leaf has gained. Seems to be quite subject dependent.
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jagged View Drop Down
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Direct Link To This Post Posted: 20 March 2008 at 11:32
Thanks dilettante and brettania for the rapid feedback!
Good point about the lighting, perhaps it was a bit harsh. I had tried bouncing it off some white paper for some other shots, but the location of the spider in this one made it impossible. I'll bear it in mind for future sessions.

@dilettante - There was a noticeable change in magnification with different focal points, but CombineZ handles that quite nicely. There is a macro (as in, sequence of commands) for performing a complete stack operation, and one of the first things it does is to align and rescale the component images. It all worked very smoothly, although I had to downsize/crop the source images prior to stacking otherwise my computer thrashed (I 'only' have 1GB RAM). I also removed some sharpening that CombineZ did by default, as it seemed a bit intense to me.
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Direct Link To This Post Posted: 20 March 2008 at 13:33
twb critters scare me.

however I love the eyes of jagged's spider

This is my contribution to the thread of what would be a black widow ?

See my webpage!
E-mount stuff, A-mount stuff, and µ43 stuff
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Direct Link To This Post Posted: 20 March 2008 at 13:52
Some nice shots here.

Thomas - love your shots of the lubber Grasshoppers. 2nd one is my favourite. Nice colours, bokeh and composition and the image has alot of depth.
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Direct Link To This Post Posted: 24 March 2008 at 12:22
Some kind of Locust or Grasshopper at lunch

Taken before I had any Macro lenses with the Tamron 28-200 at 200 mm.
You can see the April Foolishness 2021 exhibition here Another great show of the talent we have on Dyxum
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Direct Link To This Post Posted: 29 March 2008 at 17:03
Jagged, i must say i agree about the sharpening in combinez, and very good idea to get rid of it. I am not sure what i am doing but i do an enterpolated output and a weighted average and it seems ok.

I just got a new microscope lens for 27USD and this is the result...



tim
http://www.scientificillustration.net
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polyglot View Drop Down
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Direct Link To This Post Posted: 30 March 2008 at 06:14
I reckon the additional DOF looks good - a more natural view like we get with our eyes. More distracting yes; it just means you need to apply the usual compositional techniques instead of just assuming everything 3mm away will be mush.

Aphids:

... are transparent!


The Dreaded Rose Spider of Bexhill-on-Sea:


Leaving Home:

C&C always welcome
ex-Pic-A-Day
on flickr
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mee View Drop Down
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Direct Link To This Post Posted: 30 March 2008 at 09:26
I wonder if mine was from the same species of spider as polyglot's. This spider was about 3cm to 4cm in length.













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