Search found 1108 matches

by Ichthyophthirius
Sun Aug 16, 2020 2:26 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Would you recommend a tripod or monopod for macro in the field?
Replies: 23
Views: 6131

Re: Would you recommend a tripod or monopod for macro in the field?

Hi, Thanks everyone for the suggestions. @Dalantech That's a great idea. It doesn't lend itself to my usual setup with a 105 mm lens (my hands aren't that big :wink: ) but I recently started using the EF-S 24mm for macro, which would be suitable. Still have to figure out if I need to drink more or l...
by Ichthyophthirius
Fri Aug 14, 2020 7:00 am
Forum: Equipment Discussions
Topic: Help needed: DIC components necessary for my Oly
Replies: 31
Views: 5866

Re: Help needed: DIC components necessary for my Oly

Now I'm not even sure if my U-PCD is designed for oil immersion or not, it does have a higher NA of 1.25, higher than the U-TLD's 0.9, and the U-PCD-2 at 1.1??? What? So the V2.0 has a lower NA? Can't find any information online, maybe I should try and compare the methods. Surely the oil isn't too ...
by Ichthyophthirius
Fri Aug 14, 2020 6:12 am
Forum: Equipment Discussions
Topic: Help needed: DIC components necessary for my Oly
Replies: 31
Views: 5866

Re: Help needed: DIC components necessary for my Oly

Macro_Cosmos wrote:
Fri Aug 14, 2020 6:00 am
What does the "I" even mean here?
I think it's "Iris". As in oil iris objectives.
by Ichthyophthirius
Fri Aug 14, 2020 5:29 am
Forum: Equipment Discussions
Topic: Help needed: DIC components necessary for my Oly
Replies: 31
Views: 5866

Re: Help needed: DIC components necessary for my Oly

Hi, - U-DICT: Transmitted DIC module that goes into the nosepiece - U-DICTS: Same as above, but apparently it can be adjusted? However there's no slot for a polariser, and it's not much different to above. Using this would require some extra hardware to hold a polariser, I don't want that mess. Just...
by Ichthyophthirius
Fri Aug 14, 2020 3:24 am
Forum: Equipment Discussions
Topic: The Canon R5
Replies: 20
Views: 4895

Re: The Canon R5

I think it was in a review by Gerald Undone that it was mentioned that shooting stills will contribute to the over-heating issues Hi, Does it say anywhere how the test was done? I couldn't see it in the YouTube review. https://www.youtube.com/watch?v=qDXPiu3wpBs I'm asking because there is another ...
by Ichthyophthirius
Wed Aug 12, 2020 5:12 am
Forum: Beginners Micro
Topic: First photos and image editing
Replies: 17
Views: 4813

Re: First photos and image editing

So summarising do you think by using SPlan Apo objectives i lose some image quality or only F.N.? So is it possible to use even higher NA objectives for example 40x on copepods and get a sharp image? I understand that mount preparation has to be perfect, but assuming it is, at what NA does copepods...
by Ichthyophthirius
Wed Aug 12, 2020 2:24 am
Forum: Equipment Discussions
Topic: The Canon R5
Replies: 20
Views: 4895

Re: The Canon R5

For studio use, active cooling might be feasable. There are various setup ideas circulating in the astronomy community for cooling these cameras, e.g. https://www.myastroscience.com/dslrcoolerbox (haven't tried it myself).
by Ichthyophthirius
Tue Aug 11, 2020 2:07 pm
Forum: Beginners Micro
Topic: First photos and image editing
Replies: 17
Views: 4813

Re: First photos and image editing

Hi Karol, Welcome to the Forum. There are two issues that you need to deal with from the start: Spherical aberration and depth of focus. 1) Spherical aberration https://www.olympus-lifescience.com/de/microscope-resource/primer/java/aberrations/spherical/ prevents you from getting a sharp image of yo...
by Ichthyophthirius
Wed Aug 05, 2020 2:08 pm
Forum: Beginners Macro
Topic: Q: (dome, sheet, tilted) lighting for DSLR+tube lens+plan APO
Replies: 11
Views: 2643

Re: Q: (dome, sheet, tilted) lighting for DSLR+tube lens+plan APO

it must be possible to move a plan apo (before or during stacking) into a lighting dome, due to working distance. Correct? They also write something about this in the paper: "Before constructing the mini-dome, we advise the user to determine the working distance of their lenses for this application...
by Ichthyophthirius
Wed Aug 05, 2020 3:12 am
Forum: Beginners Macro
Topic: Q: (dome, sheet, tilted) lighting for DSLR+tube lens+plan APO
Replies: 11
Views: 2643

Re: Q: (dome, sheet, tilted) lighting for DSLR+tube lens+plan APO

Based on what paragraph (page number) in the article did you come to your conclusion quote "The light is corrected with the specimen, not the camera+objective. That way the illumination doesn't change as the objective moves during stacking."? Hi Jac, I would say you see this in Fig 5. G+H and in Fi...
by Ichthyophthirius
Tue Aug 04, 2020 1:39 pm
Forum: Beginners Macro
Topic: Q: (dome, sheet, tilted) lighting for DSLR+tube lens+plan APO
Replies: 11
Views: 2643

Re: Q: (dome, sheet, tilted) lighting for DSLR+tube lens+plan APO

FYI, what i mean with a dome lighting setup: A Scalable and Modular Dome Illumination System for Scientific Microphotography on a Budget, See https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4854399/?fbclid=IwAR1wq8f1aQErUL8CzR3OIaHGYZDUIo-NOXdGThEip6snRYa4julWl7yXK9Q; That's a great paper! It shows wh...
by Ichthyophthirius
Tue Aug 04, 2020 1:20 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Question regarding Nikon 10x
Replies: 7
Views: 2493

Re: Question regarding Nikon 10x

I'm partial to the brass adapters https://www.customphototools.com/macro/ ... s-adapters but unfortunately there is no M52-M25 adapter in stock.
by Ichthyophthirius
Sat Aug 01, 2020 3:04 am
Forum: Equipment Discussions
Topic: replacing Nikon FX-35A camera
Replies: 9
Views: 1911

Re: replacing Nikon FX-35A camera

Hi, 1) The idea I described above is the following: The camera sensor is place exactly at the location of the intermediate image in/above the phototube = "direct projection". With the Nikon YT-TV adapter and Nikon 1x C-mount TV adapter A, the intermediate image should be located 17.526 mm above the ...
by Ichthyophthirius
Fri Jul 31, 2020 3:35 pm
Forum: Beginners Macro
Topic: microscope infinity optical system setup for wild bees macro photography?
Replies: 9
Views: 2182

Re: microscope infinity optical system setup for wild bees macro photography?

rjlittlefield wrote:
Wed Jul 29, 2020 11:22 am
Ichthyophthirius wrote:
Wed Jul 29, 2020 1:04 am
does anyone know the NA of the MP-E at 5x?
Wide open, NA 0.149
Thanks, Rik!
by Ichthyophthirius
Fri Jul 31, 2020 3:17 pm
Forum: Equipment Discussions
Topic: Nikon's 10x finite (cf, Nikon CFI)
Replies: 3
Views: 1842

Re: Nikon's 10x finite (cf, Nikon CFI)

NikonUser wrote:
Fri Jul 31, 2020 11:11 am
My objective
Hi,

Which objective was it?