Search found 134 matches

by AlP
Fri May 13, 2022 5:31 pm
Forum: Nature Photography -- Macro and Close-up
Topic: 3 composite images
Replies: 4
Views: 154

Re: 3 composite images

Very nice.
by AlP
Thu May 12, 2022 6:38 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Carabid Disaster
Replies: 1
Views: 133

Carabid Disaster

Last night's disaster. Practicing diffusion on shiny black beetle. Carabid at 2.5x. Originally 29 steps (two flash misfires way over exposed two frames apart with 3 Canon 580 EX II'cs, ended with 27) with fresh batteries all around and forgot to mirror lockup. Carabid 2.5x 27 steps 180µm copy 1024.j...
by AlP
Wed May 04, 2022 5:38 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Weevil
Replies: 2
Views: 228

Re: Weevil

To my eyes, side view black, front view white, top view black. Totally subjective and unscientific. Nice pix either way.
by AlP
Tue May 03, 2022 5:02 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Bee Eating Honey
Replies: 2
Views: 224

Bee Eating Honey

Not a great image but... a bee (yet to be identified) eating honey at 4x. Nuthin' to eat outside so I brought it in for some photographs and a dollop of honey. Single shot with a Canon 1Dx and MPE-65mm at 4x and in the diffraction range of f16.
bee unknown honey 4x copy 1024.jpg
by AlP
Tue May 03, 2022 4:38 pm
Forum: Nature Photography -- Macro and Close-up
Topic: Hope you like bug pictures!
Replies: 9
Views: 991

Re: Hope you like bug pictures!

Nice images, Mark.
by AlP
Sat Apr 30, 2022 11:03 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Mantis eye cleaning
Replies: 6
Views: 365

Re: Mantis eye cleaning

Very coooool.
by AlP
Sat Apr 23, 2022 3:34 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Ant Face Texture
Replies: 1
Views: 245

Ant Face Texture

Nuthin' special. Warmed up today, ants came out and I caught this one. Specimen head width just a smidgeon under 1 mm. Canon 30D, Sigma 70-300 @ 250mm with Zeiss 10x infinity microscope objective giving about 10x. 101 steps at 10µm.
by AlP
Tue Apr 19, 2022 5:55 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: A Day With Banasa Stink Bugs
Replies: 1
Views: 179

A Day With Banasa Stink Bugs

Ah, it is currently snowing, so... last June I spent an afternoon with some Banasa stink bugs. This one was enjoying a plant outside. Seven image hand stack. Banasa stink bug 7 step hand stack copy 1024.jpg For the entomologists, an obligatory dorsal view, sans distracting background (single shot, l...
by AlP
Sun Apr 17, 2022 7:21 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: 25µm Vrs 10µm
Replies: 14
Views: 489

Re: 25µm Vrs 10µm

Guppy wrote:
Sun Apr 17, 2022 7:00 am
This looks good, the light draws the hair very nicely.
Kurt
Gracias. It is snowing here. Winter just doesn't want to leave. No new (fresh) specimens to work with.
by AlP
Sun Apr 17, 2022 6:26 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: 25µm Vrs 10µm
Replies: 14
Views: 489

Re: 25µm Vrs 10µm

This should be the best solution optically in principle, though with lower mag/na lenses only experimentation will answer that question definitively. I did a test with the Sigma 70-300mm last night. It came within smidgens inside the three lines for denoting 2mm on a ruler at the 300mm lens setting...
by AlP
Sat Apr 16, 2022 11:13 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: 25µm Vrs 10µm
Replies: 14
Views: 489

Re: 25µm Vrs 10µm

Whew, problem solved! I was rummaging through my "macro closet" and found an old Sigma 70-300mm lens, long forgotten. I did have to use 12mm worth of step up/down rings to attach the objective. So, in theory with the Zeiss 10x working out to 8x on the 200mm, 10x at 250, then it should be 12x at 300m...
by AlP
Sat Apr 16, 2022 10:23 am
Forum: Equipment Discussions
Topic: The Unknown Microscope
Replies: 3
Views: 223

The Unknown Microscope

This is the microscope I got for $100. The turret can hold five objectives (only came with four) Zeiss Jena Planachromat + 10x/0.20 ∞/-A, Zeiss Jena GF-Planachromat 40x/0.65 ∞/0.17-A, Zeiss Jena GF-Planachromat HI 50x/1.0 ∞/0-A and Zeiss Jena Planachromat HI 100x/1.30 ∞/0-A. It is not a microscope I...
by AlP
Fri Apr 15, 2022 4:14 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: 25µm Vrs 10µm
Replies: 14
Views: 489

Re: 25µm Vrs 10µm

The differences will be most evident when pixel-peeping. I suggest to show us an actual-pixels crop of areas containing fine details. The eyes and those antennae that show long hairs would be good areas. --Rik I can do the crops when I get time tomorrow. Thanx for some education. There is a little ...
by AlP
Fri Apr 15, 2022 1:51 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: 25µm Vrs 10µm
Replies: 14
Views: 489

25µm Vrs 10µm

It snowed last night so... I did a test this afternoon with a Canon 30D and Zeiss 10x on a 55-200mm lens. The specimen is a lacewing face. First image is 34 steps at 25µm.The second image is101 steps at 10µm. I personally do not see a major difference though the 101 step image has a very slight smid...
by AlP
Fri Apr 15, 2022 1:16 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Lygus
Replies: 9
Views: 270

Re: Lygus

OK, so they belong to the CF 250 series, full corrected planachromats designed for 250mm tube lens. Likely this isn't a stereo microscope, BTW I have no clue, no name plate on microscope. German plates on back, made in GDR. I gather then it is a "stereo" mono via mirrors for the eye pieces? I just ...