My vertical macro setup (and reflected X pol discussions)

[Pau]

Coming from a long (but not deep) background in microscopy, I find more easy to setup a vertical rig using a microscope base that an horizontal one with all these nice (and strange for me) precision positioners and micrometers shown in some very nice and sophisticated arrangements from others more skilled members. Also, the gravity help to mantain some parts in place without the need of fixations.
With limited budget and space, it's also convenient for me both to reutilize some materials and to be able to dismount and mount it easily.

Setup 1

The main base and rod is from Zeiss (west) and was sold to hold accesories and cameras in the Zeiss standard line
The camera is coupled with a custom made aluminium block and a Manfrotto monopod head.
The bellows is a Pentax M42, coupled to the lens (in this case Apo Rodagon-D 75mm f4.5) with the adequate adapters and extension tubes.
The microscope base was salvaged from an old school microscope, with a very nice coaxial focusing knobs (30mm total travel) and working X and Y controls. Clamped to the stage is an old articulated positioner.
The microscope base sits on four teflon sliders. It allows to center and rotate the specimen easily
Two Dolan-Jenner fiber optic light guides are held in place with a custom adapter (a bicycle seat clamp and a long screw and both lab clamps.
The right angle finder is an Olympus OM Varimagni coupled to the Canon body (a modified paperclip allow to adjust it nicely)
The camera is a Canon EOS, in the pictures a no working 300D.

Setup 2

The same as setup 1, changing the bellows and macro lens with a Canon zoom EF 70-200 f4L IS coupled to a Nikon microscope objective CFI 10X 0.25


Detail of the specimen positioner and the polarizers at the end of the fiber optic guides. Whith this setup I place a microscope analizer between the microscope objective and the zoom for cross pol illumination.

Any comments and advice very wellcome.
_________________
Pau

[rjlittlefield]

This is an elegant setup -- I like it a lot!

Coarse positioning from the vertical stand (and optionally the bellows rack), fine focus from a salvaged microscope, pivoting alligator clips for specimen holding.

Infinity objective on telephoto lens gives magnification from 10X down to, what, 5X?

Shown with dual fiber illumination but any other illumination would play well also.

The heavy base could be replaced with a good enlarger stand or even a wood frame like I use with my screw table.

Lots of ideas here for other people to work with.

I've added a link to here, from the focusing FAQ.

--Rik

[NikonUser]

A very nice and functional setup.
If you have the space and the funds, and if your camera has a HDMI output then connecting the camera to a HDMI TV or computer that accepts a HDMI input will make photography much easier. For stacking it makes it very easy to know when to start and when to stop.
If you camera has Live View then focusing using a 10-19" screen is simple
_________________
NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.

Nikon camera, lenses and objectives
Olympus microscope and objectives

[g4lab]

Very nice setup. I enjoy looking at these almost as much as looking at the pictures everyone takes with them. Did I mention I LOVE this forum?

[Craig Gerard]

Nice!

Craig
_________________
To use a classic quote from 'Antz' - "I almost know exactly what I'm doing!"

[Pau]

Thanks all for your kind comments

[Chris S.]

Really nice, Pau! Your approach has an elegant simplicy that I admire; and it often takes a more work to solve challenges simply than it does to throw compexity at them.

Way to go, too, for posting your rig. This kind of post helps us all.

Cheers,

--Chris

[pierre]

Nice setup Pau !


Cheers
Pierre
_________________
Regards

Pierre

[seta666]

Very nice set-up Pau, I am thinking of switching to a vertical set-up myself. Main reasons for this are:
-Gravity helps to have everything aligned properly, sometimes when using lon extensions my set-up looks a bit weak (may be it is not)
- I want to start moving the subject more that the whole set-up; this day I have been hunting on ebay an soon I will have a 6- axis set-up for a quite reasonable price

I like the fiber optic and the precision focus block of yor set-up, do you use any kind of light diffusion for your pictures?

I would not recomend a 7D for studio stacks, why? because you will pay for features you do not need, like weather sealing and 18 AF sensor etc.
I am in love with the 5D classic, Morpha has just bought the 5D mkII and normally he knows what he does
For a Canon APS-C I would choose the new 60D, more or less same as 7D but the swivel screen must be very confortable for vertical studio stacks
Regards
_________________
http://www.flickriver.com/photos/seta666/
www.macrosmuymacros.com

[Pau]

Thanks Chris, Pierre and seta666 for your words,

[Chris S.]

Pau, if I may ask, what exactly are you using for your polarizer attachments (perhaps they also have concentrating lenses in them)?

I'm aware of a few such attachments on the market--all seeming rather expensive for what they are--but I don't recognize yours.

Am setting up now to do cross pol, so this is a matter of interest.

Thanks and cheers,

--Chris

[Pau]

[Chris S.]

Thanks, Pau. I'm pretty familiar with the uses and benefits of cross pol lighting, and am working on implementing it in my rig. This why your approach is of strong interest to me--seeing how other people do things, and especially, hearing what went wrong (like the holes burning through your polarizers) is very helpful.

[Pau]

Chris,
sorry if I misunderstood a little your post, my poor english and the late hour...

- I don't see the need of remove the analyzer to focus, with fiber optic guides you may have enough light, and also be aware that removing the filter can change a little the focusing point (with non infinite objectives) and the smaller movement of the setup when doing that would also alter it .

- Yes, the analyzer is just over the objective adapter and the gravity holds it in place, not convenient for an horizontal setup.

- My illuminator is a Dolan-Jenner 180 (an old, simple and robust model). It doesn't have any filter. Glass fiber optics cuts off almost all UV radiation (I tested mine with an spectrophotometer in a physics lab) but transmits a large fraction of IR. I'm not sure if the damage of the filters was caused for IR or visible light concentrated in one small spot, in any case I already had the filter at home...

- Here you can see a close-up of my polarizers mount. The filter mount itself is a true filter holder and came from surplus school microscopes, but with plastic caps and glue (and a little of serependity) it would not be too difficult to make

_________________
Pau

[Joaquim F.]

What a macro rig, I love it! you say with this Canon you can down up to 140mm with good quality, zooms seem to have the entrance pupil further back than fixed, with the Nikon 105 i get a bit of vignetting but almost identical to the 105mm own vigneting wide open which sidetracked me a bit ... using lateral diffuse light the image show no problems! the resolution and the absence of lateral AC of this combo at 5.2X is spectacular! about polarizers I want to ask if you notice any reduction in CFI "blue halos" around brilliant areas, albeit as a "side effect" of reducing the intensity of the highlights.Seems that Zerene reduce it by "mixing" the shots especially in Pmax but if can be reduced by polarizers is a better thing! I imagine that ZS can get more textures to reconstruct a better image too... I do not know.

greetings

Joaquim
_________________
http://www.flickr.com/photos/45863071@N03/