Latest Canon EOS cameras
Moderators: rjlittlefield, ChrisR, Chris S., Pau
Latest Canon EOS cameras
Greetings All,
Am using a Canon Eos 50D for photomicrography of micro crystals and am pleased with the results. Just wonder, however, with all the new cameras appearing if there is anything better. Has anyone any experience with the EOS 6D mark ll or the 5DS R?
What would be the result of using a full frame, would that reduce size of image putting it in a larger frame? Or could one use a shorter connection to the mscope?
Would love to hear what you are using for shooting micro crystals.
Best wishes,
MicroB
Am using a Canon Eos 50D for photomicrography of micro crystals and am pleased with the results. Just wonder, however, with all the new cameras appearing if there is anything better. Has anyone any experience with the EOS 6D mark ll or the 5DS R?
What would be the result of using a full frame, would that reduce size of image putting it in a larger frame? Or could one use a shorter connection to the mscope?
Would love to hear what you are using for shooting micro crystals.
Best wishes,
MicroB
With a new FF camera you can get some better image quality (less noise, more dynamic range...)
If you do use the same optics the magnification on sensor will be the same but the field will be about 1.6X larger. If you want the same framing you'll need about 1.6X more magnification.
I don't know what mscope means, please post more info and/or pictures. With some setups APSC is better like with many microscope objectives for direct projection because they don't cover FF at least with good quality while with classic finite corrected microscopes FF is often more convenient because the relay optics are better adapted for 35mm film cameras
If you do use the same optics the magnification on sensor will be the same but the field will be about 1.6X larger. If you want the same framing you'll need about 1.6X more magnification.
I don't know what mscope means, please post more info and/or pictures. With some setups APSC is better like with many microscope objectives for direct projection because they don't cover FF at least with good quality while with classic finite corrected microscopes FF is often more convenient because the relay optics are better adapted for 35mm film cameras
Pau
Hello Pau,
That's interesting to learn about the 1.6x mag of the FF camera. Might just upset the habit of using 4x or 10x because they give best results with crystals.
Enclosing a couple of images for you to see examples of the results I'm getting on my Olympus BH2 microscope use the Canon EOS 50D. The 4x, 20x, 40x are all D Plan while the 10x is an S Plan Apo.
Best wishes,
Bob
That's interesting to learn about the 1.6x mag of the FF camera. Might just upset the habit of using 4x or 10x because they give best results with crystals.
Enclosing a couple of images for you to see examples of the results I'm getting on my Olympus BH2 microscope use the Canon EOS 50D. The 4x, 20x, 40x are all D Plan while the 10x is an S Plan Apo.
Best wishes,
Bob
and very, very expensivePau wrote:If you use the BH2 in a conventional form with a NFK projective eyepiece to get the adequate coverage you need a very rare 1.67X NFK with APSC and a much more common and less expensive 2.5X NFK for FF
https://www.ebay.co.uk/itm/Olympus-Mikr ... SwjodaCcdH
The 3.3X NFK crops too much on APSC, even for my taste it will crop an excess on FF. Even if you don't change the camera a 2.5X will be an improvementMacroB wrote:I'm using a 3.5 NFK and I do have a 6.7. Sounds as if it could be a lot of money for no definite or specific improvement.
Yeah! although this german seller usually lists overpriced items
Pau
There isn't such NFK, for good standard coverage you would need around 1.2X.
An alternative is to switch to an afocal setup*: for example a 30mm camera lens over a 10X visual eyepiece. The problem is that Olympus BH2 trino head phototube doesn't allow to hold a wide visual eyepiece, you could modify the phototube, switch to an older BH head or use some models of Leitz Periplan** eyepieces
Some discussion here:
http://www.photomacrography.net/forum/v ... hp?t=24824
* http://www.photomacrography.net/forum/v ... hp?t=15607
** the compensation amount of Leitz and Olympus finite objectives is pretty close
An alternative is to switch to an afocal setup*: for example a 30mm camera lens over a 10X visual eyepiece. The problem is that Olympus BH2 trino head phototube doesn't allow to hold a wide visual eyepiece, you could modify the phototube, switch to an older BH head or use some models of Leitz Periplan** eyepieces
Some discussion here:
http://www.photomacrography.net/forum/v ... hp?t=24824
* http://www.photomacrography.net/forum/v ... hp?t=15607
** the compensation amount of Leitz and Olympus finite objectives is pretty close
Pau
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Hi John,dolmadis wrote:what FL Camera lens would be best on an M4/3 camera afocal please?
To calculare this, you have to decide first what image crop you want to capture.
Have a look here (requires Flash plugin): http://www.mikroskopie.de/pfad/dokumentation/acht.html
Choose eyepiece field number (e.g. 18) and sensor (4/3). A relay factor of 1.2 ("Vergrößerungsfaktor") is a good choice.
Relay factor = eyepiece magn. x (camera objective focal length / 250 mm)
1.2 = 6.3 x (FL/250)
FL = 47.6 mm
So you need something around 40-50 mm.
Regards, Ichty