Advice to buy a Plan objective
Advice to buy a Plan objective
Hi,
I want to buy one plan objective to check the difference field with common achromatic objective.
My microscope have 4x, 10x, 40x, 100x + one additional 60x . Also I use camera.
I use more extensively 40x and 60x, although I'm not sure if the plan field can be more profitable for the others sizes, specially with camera.
What can be the best choosing to add the first plan objective?
I want to buy one plan objective to check the difference field with common achromatic objective.
My microscope have 4x, 10x, 40x, 100x + one additional 60x . Also I use camera.
I use more extensively 40x and 60x, although I'm not sure if the plan field can be more profitable for the others sizes, specially with camera.
What can be the best choosing to add the first plan objective?
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Re: Advice to buy a Plan objective
That entirely depends on what you are looking at . If you are looking at relatively thick specimens, a plan objective may not be of much value. If I had to choose just one though, it would probably be a 20X.
Re: Advice to buy a Plan objective
I understand. My main interest in plan objectives is not for eyes but for the camera.
I have found this thread in the topic with some images, and the change is better at higher magnifications.
I will try 60x
https://www.microbehunter.com/microscop ... php?t=9846
I have found this thread in the topic with some images, and the change is better at higher magnifications.
I will try 60x
https://www.microbehunter.com/microscop ... php?t=9846
Re: Advice to buy a Plan objective
Hi Marc,
to make good use of a plan objective in photography you need a camera adaptation that preserves this planarity. What kind of microscope and camera adaptation do you use and does it fit to the objective in mind?
On a good microscope system plan objectives give a planar image to a field of at least 18mm, often much more, independent of the magnification. So you should be free to choose the magnification where you profit most from the planarity. Many objects are not flat themselves so they don't profi much from a plan setup. For me planarity is most valued for plant sections and objectives from 6,3:1 to 25:1.
Here are some very interesting articles on the need for planarity and on micro photography, written by Rolf Vossen, an experienced microscopist who makes up his own mind:
https://microscopyofnature.com/praise-humble-achromat
https://microscopyofnature.com/micro-photography
Bob
to make good use of a plan objective in photography you need a camera adaptation that preserves this planarity. What kind of microscope and camera adaptation do you use and does it fit to the objective in mind?
On a good microscope system plan objectives give a planar image to a field of at least 18mm, often much more, independent of the magnification. So you should be free to choose the magnification where you profit most from the planarity. Many objects are not flat themselves so they don't profi much from a plan setup. For me planarity is most valued for plant sections and objectives from 6,3:1 to 25:1.
Here are some very interesting articles on the need for planarity and on micro photography, written by Rolf Vossen, an experienced microscopist who makes up his own mind:
https://microscopyofnature.com/praise-humble-achromat
https://microscopyofnature.com/micro-photography
Bob
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Re: Advice to buy a Plan objective
Bob,
Thank you for those links.
More complex is not always better and complexity has its costs.
Gerard
Thank you for those links.
More complex is not always better and complexity has its costs.
Gerard
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Re: Advice to buy a Plan objective
It also depends on the individual objective design. Some standard objectives have surprisingly flat fields.
Re: Advice to buy a Plan objective
thank you MicroBob for these links and explanations, really helpful!