As with the two-step film emulation using physical filters and digital presets which we have discussed, using a polarizing filter and then enhancing it with digital editing techniques often ...

Microscopic images are characterized by a number of microscope-specific parameters-numerical aperture (NA), magnification (M), and resolution (R)-and by parameters that also depend on the specimen-for ...

This video gives a brief overview of how to adjust the field diaphragm on a compound microscope for viewing a specimen on a slide. This video can also be viewed at ...

In the bottom image, a specimen examined with bright-field microscopy (upper half of the image) or polarizing microscopy (lower half of the image) showed a CD68 multinucleate giant cell (brown in ...

The aperture ring has a range of f/2 to f/16. TTArtisan mentions that the lens is suitable for “pursuing beautiful bokeh” though, with only a seven-blade aperture diaphragm, we suspect they might be a ...

Three-dimensional (3D) microscopy exploiting refractive index (RI) as intrinsic imaging contrast is a long-sought tool for biomedical research. Towards this goal, researchers from Nanjing ...

To further enhance the application ability of THz imaging, Scientists in China invented a new THz near-field microscopy based on an air-plasma dynamic aperture, which allow us to achieve THz sub ...

Schematic of THz near-field microscopy based on an air-plasma dynamic aperture. Two femtosecond laser pulses were focused in mutually perpendicular directions to generate two air-plasmas (Plasma1 ...