Search found 148 matches

by Guppy
Fri Sep 18, 2020 12:56 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Palomena prasina eggs and the hatched nymphs
Replies: 14
Views: 357

Re: Palomena prasina eggs and the hatched nymphs

Finally, the empty eggs from very close.
Zeiss Luminar 25mm, 6:1, 273 images, stack step size 7.5 µm.

Image

thank you very much for your interest

Kurt
by Guppy
Thu Sep 17, 2020 11:09 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Palomena prasina eggs and the hatched nymphs
Replies: 14
Views: 357

Re: Palomena prasina eggs and the hatched nymphs

Hello Mike

The nymphs react to shock, they remain still.
Between each picture of the stack series, I lightly tapped the surface with tweezers.
In this way they remained calm.

Kurt
by Guppy
Wed Sep 16, 2020 7:34 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Apertur-Stacking
Replies: 3
Views: 176

Re: Apertur-Stacking

Here with this beetle you could extend the highest resolution range of the eye a bit with a focus stack at f-stop 2.8,
then the area around the eye would be sharper.

Kurt
by Guppy
Wed Sep 16, 2020 6:21 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Palomena prasina eggs and the hatched nymphs
Replies: 14
Views: 357

Re: Palomena prasina eggs and the hatched nymphs

The empty egg shells of Palomena prasina.
You can see the can opener. 😊

Image
Nikon 105mm, 2:1, 96 images, stack step size 35 µm

Kurt
by Guppy
Wed Sep 16, 2020 3:46 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Apertur-Stacking
Replies: 3
Views: 176

Apertur-Stacking

In enlarging photography, sometimes a smooth sharpening process with maximum resolution in the focal plane is desired. For example, if aperture 2.8 is the highest resolving aperture, the depth of field is very shallow, with aperture 22 the depth of field is large, but the resolution in the plane of ...
by Guppy
Tue Sep 15, 2020 5:02 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Palomena prasina eggs and the hatched nymphs
Replies: 14
Views: 357

Re: Palomena prasina eggs and the hatched nymphs

The nymphs on their empty egg shells.
Nikon105mm with bellows at 2:1,
87 single images, stack steps of 30 µm.

Image

Kurt
by Guppy
Mon Sep 14, 2020 4:55 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Palomena prasina eggs and the hatched nymphs
Replies: 14
Views: 357

Re: Palomena prasina eggs

Thank you very much for the interesting films, they complement my picture series very well.

The next picture with the Zeiss Luminar 16mm, at 9:1, shows the eggs shortly before hatching.
339 images, stack step size 3.5 µm, object side image width 2.6mm.

Image

Kurt
by Guppy
Sun Sep 13, 2020 3:13 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Palomena prasina eggs and the hatched nymphs
Replies: 14
Views: 357

Re: Palomena prasina eggs

The Laowa 25mm F 2.8, 2.5-5X Ultra Macro is a very good lens that is also suitable for full format. Image scale from 2.5:1 to about 7:1 (with extension rings). Enclosed is a picture taken with the ZEISS Luminar 25mm at 6:1 showing the fresh eggs from above. 202 images, stack step size 7.5µm, object ...
by Guppy
Sat Sep 12, 2020 9:17 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Palomena prasina eggs and the hatched nymphs
Replies: 14
Views: 357

Palomena prasina eggs and the hatched nymphs

I suppose everyone knows the green stink bug, here its eggs. https://up.picr.de/39421609dj.jpg http://files.homepagemodules.de/b649264/f7t3623p27703n2_ZMVwkilQ.jpg Kamera: Nikon D810 Objektiv: Laowa 25mm F 2.8, 2.5-5X Ultra Macro Belichtungszeit: Blitz Blende: 2.8 ISO: 64 Beleuchtung: 3 Blitzgeräte ...
by Guppy
Mon Sep 07, 2020 6:37 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Small hymenoptera
Replies: 0
Views: 204

Small hymenoptera

Hi There is a very large selection of small flying insect species. In the vernacular they are often called mosquitoes, even if they do not bite. Body length 7 mm. Here a specimen with 7mm body length, which I found dead on a leaf, on the abdomen there were already mushroom threads visible. https://u...
by Guppy
Fri Aug 14, 2020 6:34 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Polypodium vulgare
Replies: 15
Views: 1251

Re: Polypodium vulgare

" spore size varies with the treatment, especially the mounting medium." I measure the fresh untreated spores. I have now measured fresh spores from another part of the leaf with a maximum length of 95µm (P. interjectum). So basal cells 2-3 and maximum length of spores 95 µm, two factors indicate P...
by Guppy
Fri Aug 14, 2020 5:04 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Polypodium vulgare
Replies: 15
Views: 1251

Re: Polypodium vulgare

I hope I'm understanding this correctly.
1 - 2 basal cells = P. vulgare
2 - 5 basal cells = P. interjectum
Since on my picture 2 and also 3 basal cells are visible, it is probably P. interjectum!
But the maximum spore length is 77µm, which indicates P. vulgare?

Thanks a lot
Kurt
by Guppy
Fri Aug 14, 2020 2:00 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Polypodium vulgare
Replies: 15
Views: 1251

Re: Polypodium vulgare

Can you determine the species with this picture?

Image

thanks a lot
Kurt
by Guppy
Thu Aug 13, 2020 1:59 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Polypodium vulgare
Replies: 15
Views: 1251

Re: Polypodium vulgare

Many thanks for the correction.
"the thin skin, the Indusium (veil) falls off during the ripening."
Sorry, it's my fault.
Polypodium vulgare is the appointment of a gardener, (probably quick and dirty?).

Kurt
by Guppy
Wed Aug 12, 2020 8:43 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Polypodium vulgare
Replies: 15
Views: 1251

Re: Polypodium vulgare

Hi Lothar I use the Laowa 25mm F 2.8, 2.5-5X Ultra Macro on the Nikon bellows PB-6, here at 7:1 with the minimum extension of 50mm. Image scale / approx. resolution of the object 3:1 / 320 LP/mm 4:1 / 380 LP/mm 5:1 / 450 LP/mm 6:1 / 490 LP/mm 7:1 / 530 LP/mm 8:1 / 550 LP/mm 10:1 / 560 LP/mm Up to 7:...