Search found 2515 matches

by Adalbert
Mon Apr 01, 2024 8:40 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: some scales
Replies: 157
Views: 17057

Re: some scales

Hello everybody,
sunset moth with mitu 20x (4K on click):
Image
Best, ADi
by Adalbert
Mon Apr 01, 2024 8:24 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: some scales
Replies: 157
Views: 17057

Re: some scales

Hello everyone,
Another photo of the scales of the sunset moth, illuminated with LED:
Image
m6m2, dcr150, oly50x/0.80, led
Best, ADi
by Adalbert
Sun Mar 31, 2024 9:44 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Diatoms: macro style
Replies: 6
Views: 256

Re: Diatoms: macro style

Hello Steve,
very nice, (mitu 20x is really great).
Such photo subjects are perfect for 3D :-)
Best, ADi
by Adalbert
Sun Mar 31, 2024 9:40 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Green Spined Stink Bug
Replies: 2
Views: 214

Re: Green Spined Stink Bug

Hello Mike,
very nice (especially the eyes) !
Best, ADi
by Adalbert
Sun Mar 31, 2024 9:35 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: some scales
Replies: 157
Views: 17057

Re: some scales

Hello everyone,
This time brown scales of the sunset moth (LED, exposure time 4S !)
Image
m6m2, dcr150, oly50x/0.80, 5*LED, 4 sec
Best, ADi
by Adalbert
Sun Mar 31, 2024 8:02 am
Forum: Community Members and Friends
Topic: New member from Tokyo Japan
Replies: 6
Views: 279

Re: New member from Tokyo Japan

Welcome to the forum !
by Adalbert
Sun Mar 31, 2024 7:54 am
Forum: Equipment Discussions
Topic: Fun with the AstrHori 25mm
Replies: 9
Views: 396

Re: Fun with the AstrHori 25mm

Hello Doug,
First of all, congratulations on buying a new lens.
I can well imagine that it's fun to work with.
I don't have this lens and would like to see what photos can be taken with it.
Best, ADi
by Adalbert
Sun Mar 31, 2024 2:41 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: some scales
Replies: 157
Views: 17057

Re: some scales

Hello everyone,
Dirt particles, stereo pair (crossed eyes):
Image
Best,ADi
by Adalbert
Sun Mar 31, 2024 2:27 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: some scales
Replies: 157
Views: 17057

Re: some scales

Hello everyone,
Some scales with their holding and dirt particles, perhaps one pollen:
Image
Best, ADi
by Adalbert
Sun Mar 31, 2024 1:51 am
Forum: Equipment Discussions
Topic: No sharpness when using mitutoyo 10x (also halo, low contrast)
Replies: 16
Views: 674

Re: No sharpness when using mitutoyo 10x (also halo, low contrast)

Hi,
OK, if everything is OK with the lighting, then I would check the rail.
1) Are the steps really as small as you want them to be?
2) Is the rail sufficiently well centred?
There is a long red artefact worm in the top right of photo 5x.
Best, ADi
by Adalbert
Sat Mar 30, 2024 7:56 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: some scales
Replies: 157
Views: 17057

Re: some scales

Hello everyone,
Animated rocking stereo (pict-nr: 9, shift: -+4%)
Image
m6m2, dcr150, oly50x/0.80, 4*yn660, 1/10s, fully electronic shutter
Best, ADi
by Adalbert
Sat Mar 30, 2024 7:45 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: some scales
Replies: 157
Views: 17057

Re: some scales

Hello everyone,
Now a view from the side (3d depth map):
Image
Best, ADi
by Adalbert
Sat Mar 30, 2024 7:00 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: some scales
Replies: 157
Views: 17057

Re: some scales

Hello everyone,
On the stereo photo (crossed eyes) you can see better that the scales are close to each other:
Image
Best, ADi
by Adalbert
Sat Mar 30, 2024 3:37 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: some scales
Replies: 157
Views: 17057

Re: some scales

Hello everyone,
For comparison a photo of scales lying flat on top of each other:
Image
m6m2, dcr150, oly50x/0.80, 4*yn660, 1/10s, fully electronic shutter
Best, ADi
by Adalbert
Fri Mar 29, 2024 9:31 am
Forum: Equipment Discussions
Topic: No sharpness when using mitutoyo 10x (also halo, low contrast)
Replies: 16
Views: 674

Re: No sharpness when using mitutoyo 10x (also halo, low contrast)

DOF depends on the NA (numerical aperture)
e.g.
NA=0.14 => DOF=0,028061mm
NA=0.28 => DOF=0,007015mm
NA=0.42 => DOF=0,003118mm
NA=0.55 => DOF=0,001818mm
NA=0.75 => DOF=0,000978mm

You should take at least one photo inside the DOF (I take 3 :-)

Best, ADi