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Wasp portraits

 
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AlxndrBrg



Joined: 14 Jan 2014
Posts: 47

PostPosted: Thu May 31, 2018 9:07 am    Post subject: Wasp portraits Reply with quote

Two hymenoptera I've collected recently and shot in a fresh state, its a real treat to image them as they appear when alive, instead of the old dried collection specimens.


Chrysis impressa Schenck, 1856 - female
Probably the most common Chrysis species in Sweden, and as is the case with many chrysidids they are even more colourful when not dried as in collections.
Sweden, 2018.V.30
Shot with a Lomo 3,7 extended to 6.5 magnification
Full size image here: https://c2.staticflickr.com/2/1734/40666749410_27566143a0_o.png


Odynerus melanocephalus (Gmelin, 1790), first time I've come across this species considered to be NT (near threatened) in Sweden. Found at a typical habitat for the species, a brownfield site, this one underneath the Öresunds-bridge that connects Sweden to Denmark. It is not the host of C. impressa but of C. viridula Linnaeus, 1761. The colours look a bit washed out, especially compared to the rainbow party that's the Chrysis above, but it's actually true to life. The yellow colouration varies in this species, some are bright saturated yellow and others, like this individual, have a much more light yellow / bone-white tone.
Sweden, 2018.V.28
Also using the Lomo 3,7 didnt check the actual magnification, but something like 4-5 times I'd think.
Full size image here: https://c2.staticflickr.com/2/1759/41716145474_1872e59983_o.png

Canon 6D, ISO100
Pentacon M42 bellows
Proxxon precision table for stepping
Lit with IKEA Jansjö LED's, diffused with a simple paper cylinder
around 2 second exposures to allow for micro-vibrations from the EFCS start to die down
stacked in ZerenStacker, retouched using both PMax and Dmap, and further edited in PS


Some more shots here: https://www.flickr.com/photos/69669232@N06/[/i]
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Lou Jost



Joined: 04 Sep 2015
Posts: 2703
Location: Ecuador

PostPosted: Thu May 31, 2018 9:11 am    Post subject: Reply with quote

Beautiful images and interesting to see the Lomo pushed up that far.
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mawyatt



Joined: 22 Aug 2013
Posts: 1593
Location: Clearwater

PostPosted: Thu May 31, 2018 7:57 pm    Post subject: Reply with quote

Very nice images Very Happy

Agree with Lou that the Lomo 3.7 is certainly showing nicely at higher magnifications Smile

Best,
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AlxndrBrg



Joined: 14 Jan 2014
Posts: 47

PostPosted: Sat Jun 02, 2018 8:55 am    Post subject: Reply with quote

Thanks!

Yes, I'm very happy with how far its possible to push the little Lomo, both up and down in magnification.

This image is at 2.3x


Full size: https://c2.staticflickr.com/2/1737/28578889618_56483762e0_o.png
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mawyatt



Joined: 22 Aug 2013
Posts: 1593
Location: Clearwater

PostPosted: Sat Jun 02, 2018 9:32 am    Post subject: Reply with quote

Nice, did you see any vignetting on FF when pushed down to 2.3X?

Best,
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AlxndrBrg



Joined: 14 Jan 2014
Posts: 47

PostPosted: Sat Jun 02, 2018 9:48 am    Post subject: Reply with quote

Hard to say as I used a black background for these sets, but there appears to not be any darkening of the corners. When I pushed up the histogram to view the background there's no vignetting, as the background isnt 0/0/0 black it would have shown up I'd think.


(this is not one of the images used in the stack above, the images used for that one had the animal much more centred)
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AlxndrBrg



Joined: 14 Jan 2014
Posts: 47

PostPosted: Sat Jun 02, 2018 10:39 am    Post subject: Reply with quote

Did a real test;

at 2.3x mag (which is around 100 mm from the sensor to the Lomo's shoulder)

images taken from a single, totally unprocessed image that shows the vignetting and the difference in sharpness between the corner and centre. Saved as quality 12 jpg's, so they should be close to the original.

Left image shows the lower left corner (green square), the right is somewhat central (red square)




I set the corner to be as sharp as possible and then chose an area close to the centre that was in focus as well. Oh and the printed paper slip is not flat at all, so I cant say anything about the image flatness, but that doesnt really matter for stacking anyway
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mawyatt



Joined: 22 Aug 2013
Posts: 1593
Location: Clearwater

PostPosted: Sat Jun 02, 2018 11:51 am    Post subject: Reply with quote

Thats not bad at all. Thanks for taking the time to show this.

Best,
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JH



Joined: 09 Mar 2013
Posts: 1151
Location: Vallentuna, Stockholm, Sweden

PostPosted: Sat Jun 02, 2018 12:01 pm    Post subject: Reply with quote

Very nice pictures - and thanks for the extra information about the insects and the Lomo.

Best regards
Jörgen Hellberg
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