Search found 2620 matches

by NikonUser
Thu Jul 23, 2020 2:35 pm
Forum: Equipment Discussions
Topic: 40/2.8 Apo-Componon @ 3.6x
Replies: 11
Views: 1775

40/2.8 Apo-Componon @ 3.6x

In an earlier post: https://www.photomacrography.net/forum/viewforum.php?f=25 it was suggested that the Laowa 2.5-5x might serve me well in that magnification range. Currently I use the above Apo-Componon reversed on bellows on a FF Nikon (D810) I am wondering if anyone has an opinion as to whether ...
by NikonUser
Thu Jul 23, 2020 8:42 am
Forum: Equipment Discussions
Topic: Nikon 2.5x M Plan vs. 40/2.8 Apo-Componon
Replies: 11
Views: 1782

Re: Nikon 2.5x M Plan vs. 40/2.8 Apo-Componon

The lens is a fixed f/2.8, reversed on a Nikon bellows
(I've tried spreading micros, impossible - need skill)
by NikonUser
Thu Jul 23, 2020 5:02 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Dysdera crocata, the Woodlouse Spider
Replies: 5
Views: 1270

Re: Dysdera crocata, the Woodlouse Spider

Interesting.
My text says they 'like' living with us - synanthropic (I had to look it up !).
18 months to mature and then live up to an additional 3 years
by NikonUser
Thu Jul 23, 2020 4:52 am
Forum: Equipment Discussions
Topic: Nikon 2.5x M Plan vs. 40/2.8 Apo-Componon
Replies: 11
Views: 1782

Re: Nikon 2.5x M Plan vs. 40/2.8 Apo-Componon

Thanks everyone.
Amazing that JKT can spread such small moths. Too late for me to switch to Canon, too much invested in Nikon equipment.
I did manage to clean up the moth, re-shot it with the Apo-Componon, same setup as before, different lens:
by NikonUser
Thu Jul 23, 2020 4:37 am
Forum: Nature Photography -- Macro and Close-up
Topic: Egg Papilio machaon update I & update II
Replies: 31
Views: 3172

Re: Egg Papilio machaon update I

Should be easy to rear to an adult if you place the egg on a living plant (of the same species) in a cage.
Cut off a small piece of stem containing the egg and attach the cut piece to the stem of the plant in a pot. The caterpillar will do the rest!
Best not to touch the egg or the young caterpillar
by NikonUser
Wed Jul 22, 2020 11:16 am
Forum: Equipment Discussions
Topic: Nikon 2.5x M Plan vs. 40/2.8 Apo-Componon
Replies: 11
Views: 1782

Re: Nikon 2.5x M Plan

Yes, a finite objective needing 210 mm tubing; NA 0.075; lens looks perfect. I reckon on a 'scope with a 10x eyepiece image will be good.
I have had this lens for a while, I now remember why I never use it.
I have a few enlarger lenses which give decent images at this mag., will reshoot the moth
by NikonUser
Wed Jul 22, 2020 7:15 am
Forum: Equipment Discussions
Topic: Nikon 2.5x M Plan vs. 40/2.8 Apo-Componon
Replies: 11
Views: 1782

Nikon 2.5x M Plan vs. 40/2.8 Apo-Componon

Would be a useful lens for this magnification but..... This small moth, L: 6.80 mm, is too large for my 4x objective which badly vignettes on the FF D810. Unfortunately the 2.5x is even worse than the 4x; and with less than a flat field. 1398.2 Coleophora deauratella , full frame and cropped (moth t...
by NikonUser
Wed Jul 22, 2020 7:05 am
Forum: Photography Through the Microscope
Topic: Unknown larvae
Replies: 2
Views: 901

Re: Unknown larvae

Nice image, but unfortunately difficult to positively ID.
My guess is some type of fly larva (Diptera). Perhaps you can isolate a few in a vial and see what emerges!
by NikonUser
Mon Jul 20, 2020 1:03 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: moth reproductive system
Replies: 5
Views: 1098

Re: moth reproductive system

As they are on the same genus I suspect the structures are very similar. This latest image is a lateral view of the signum, the earlier image is a surface view. These structures must be of high significance, no other reason to develop such a relatively complex structure in what is otherwise a simple...
by NikonUser
Mon Jul 20, 2020 9:58 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: moth reproductive system
Replies: 5
Views: 1098

Re: moth reproductive system

2nd species, same genus; Macaria signaria
signum appears to have an opening to the body cavity
by NikonUser
Sun Jul 19, 2020 9:04 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Yet another fly...
Replies: 4
Views: 1022

Re: Yet another fly...

Besides Flesh Flies there are 4 or 5 closely associated families in the superfamily grouping Hippoboscoidae) that practice viviparity. The adults are bloodfeeders and the larvae develop within the mother.
(from: Erica McAlister 2018 "The Secret Life of Flies).
Book includes 2 of my images!
by NikonUser
Fri Jul 17, 2020 9:08 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: moth reproductive system
Replies: 5
Views: 1098

moth reproductive system

Female moths store sperm, from males, in a small sac ( corpus bursa ). At the time of egg-laying sperms travel from the sac to an egg just before it is laid. The corpus bursa varies in shape and 'ornamentation' ranging from a simple unadorned sac to one covered in internal spines. In the genus Macar...
by NikonUser
Wed Jul 15, 2020 5:40 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Nikon's Plan 20x finite, NA 0.50
Replies: 4
Views: 895

Re: Nikon's Plan 20x finite, NA 0.50

Yes, the non-apo CFN Plan Achromat; the 20x Apo has a whopping 0.75 NA. I do have the 4x CFN Plan Apo. Genitalia mounted on a slide in Canada Balsam, with coverslip. I use a 'decapitated' ( i.e ., objective arm sawn off) Olympus BH2 microscope stand to move the slide in X Y Z axes, transmitted light...
by NikonUser
Tue Jul 14, 2020 5:46 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Nikon's Plan 20x finite, NA 0.50
Replies: 4
Views: 895

Nikon's Plan 20x finite, NA 0.50

Yet to make the switch to infinites as I find Nikon's finite are adequate for my work. This tiny moth, Psyche casta , has a strange life history but this is not the place. Photographed the genitalia with the 20x, on bellows, D810 (full frame), Zerene PMax, as part of my project documenting moth geni...