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
Search found 2471 matches
- Fri Mar 29, 2024 9:31 am
- Forum: Equipment Discussions
- Topic: No sharpness when using mitutoyo 10x (also halo, low contrast)
- Replies: 6
- Views: 149
- Fri Mar 29, 2024 6:45 am
- Forum: Equipment Discussions
- Topic: No sharpness when using mitutoyo 10x (also halo, low contrast)
- Replies: 6
- Views: 149
Re: No sharpness when using mitutoyo 10x (also halo, low contrast)
Hi Radek, In my opinion, the resolution is OK, but somehow the light does not come as desired. Could you post a picture of your setup? I usually use two cylinders, one on the lens and one around the subject: e.g. https://www.facebook.com/photo/?fbid=140151464300136&set=a.120670269581589 BTW, the dif...
- Thu Mar 28, 2024 9:47 am
- Forum: Nature Photography -- Macro and Close-up
- Topic: Rio Bigal Reserve: Ecuador II
- Replies: 4
- Views: 96
Re: Rio Bigal Reserve: Ecuador II
very nice
- Sat Mar 23, 2024 8:45 am
- Forum: General Discussion Forum and Community Announcements
- Topic: Loss of Robert OToole
- Replies: 29
- Views: 867
Re: Loss of Robert OToole
First of all, my sincere condolences to the family!
He will remain in my memory as,
a very friendly and competent person.
I will miss him.
ADi
He will remain in my memory as,
a very friendly and competent person.
I will miss him.
ADi
- Fri Mar 22, 2024 12:47 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: some scales
- Replies: 132
- Views: 15165
Re: some scales
Many thanks !
- Thu Mar 21, 2024 4:55 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: some scales
- Replies: 132
- Views: 15165
Re: some scales
Hello everyone,
Animated rocking stereo:
[/url]
Best, ADi
Animated rocking stereo:
[/url]
Best, ADi
- Thu Mar 21, 2024 3:44 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: some scales
- Replies: 132
- Views: 15165
Re: some scales
Hello everyone, The scales of my new butterfly are beautifully coloured, but they are not on top of each other, but stand far apart. In some places they stand out really far. For this reason, in my opinion, it is very difficult to take photos of the structure of such scales at high magnification. e....
- Thu Mar 21, 2024 3:42 am
- Forum: Photography Through the Microscope
- Topic: Soy Sauce landscape
- Replies: 7
- Views: 458
Re: Soy Sauce landscape
very nice
- Wed Mar 20, 2024 3:23 pm
- Forum: Photography Through the Microscope
- Topic: Diatoms - Didysmophenia geminata and Gomphonema sp.
- Replies: 8
- Views: 528
- Wed Mar 20, 2024 10:24 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: some scales
- Replies: 132
- Views: 15165
Re: some scales
Hello everyone,
I actually wanted to wiggle around the other diagonal but got this one (with Shift XY -+4%)
Best,ADi
I actually wanted to wiggle around the other diagonal but got this one (with Shift XY -+4%)
Best,ADi
- Wed Mar 20, 2024 9:54 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: some scales
- Replies: 132
- Views: 15165
- Wed Mar 20, 2024 9:49 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Scales thread
- Replies: 38
- Views: 1494
Re: Scales thread
Thank you, Adi, sure, long WD is always an advantage, regardless of subject's flatness. High-NA, short-WD objectives are fun to play with, but kinda pain in the rear to use... This is with TU Plan 100/0.80 ELWD + 105mm tube lens at 52.5X on sensor. Stack was shot with continuous lighting and traffi...
- Wed Mar 20, 2024 3:18 am
- Forum: General Discussion Forum and Community Announcements
- Topic: "naturefold" -- field photography with Laowa 2.5-5X and focus stacking
- Replies: 4
- Views: 162
Re: "naturefold" -- field photography with Laowa 2.5-5X and focus stacking
Hello Rik,
Great, but you have to have a steady hand.
So, not for grandpas / grannies with shaky hands
Best, ADi
Great, but you have to have a steady hand.
So, not for grandpas / grannies with shaky hands
Best, ADi
- Wed Mar 20, 2024 2:05 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Scales thread
- Replies: 38
- Views: 1494
Re: Scales thread
Hello Macrero,
Great photo!
But it is also a fantastic lens with a long WD.
Here you can clearly see how important the WD is.
Best, ADi
Great photo!
But it is also a fantastic lens with a long WD.
Here you can clearly see how important the WD is.
Best, ADi
- Wed Mar 20, 2024 1:54 am
- Forum: Photography Through the Microscope
- Topic: Surirella lacrimula
- Replies: 10
- Views: 558
Re: Surirella lacrimula
Hello James,
That looks great, well done!
Best, ADi
That looks great, well done!
Best, ADi