deconstruction, form of philosophical and literary analysis, derived mainly from work begun in the 1960s by the French philosopher Jacques Derrida, that questions the fundamental conceptual distinctions, or “oppositions,” in Western philosophy through a close examination of the language and … Continue reading →

The eyepiece, or ocular lens, is the part of the microscope that magnifies the image produced by the microscope’s objective so that it can be seen by the human eye. Where is the eyepiece or ocular attached? The eyepiece is … Continue reading →

What’s the typical focal length of a smartphone lens? Camera type Focal length Angle-of-view Wide-angle 22mm to 30mm ~84° to ~62° Telephoto 50mm to 80mm ~40° to ~25° Ultrawide-angle 12mm to 18mm ~112° to ~90° Periscope 103mm to 125mm ~20° … Continue reading →

focal length. Quite simply, the “f” stands for “focal length”. When you substitute focal length into the fraction, you’re solving for the diameter of the aperture blades in your lens. (Or, more accurately, the diameter that the blades appear to … Continue reading →

How do you stop down a lens? In photography, stopping down refers to increasing the numerical f-stop number (for example, going from f/2 to f/4), which decreases the size (diameter) of the aperture of a lens, resulting in reducing the … Continue reading →

Iris DiaphragmIris DiaphragmIris diaphragms versus other types A natural optical system that has a diaphragm and an aperture is the human eye. The iris is the diaphragm, the pupil is the aperture. In the human eye, the iris can both … Continue reading →

You simply tell the focus motor inside to move back or forth. As such, there is no way to really tell but if you want infinity, just turn the direction all the way until the focus no longer changes. What … Continue reading →

Is there a lot of math in an IT degree? As part of any computer science degree program, you’ll learn discrete math, differential equations, calculus, and linear algebra. But if you’re learning on your own, you can find online courses … Continue reading →

According to the annual National Survey of Student Engagement, software engineering, computer science and astronomy majors enjoy the least stressful college experience, and spend the most time relaxing and socializing, including hanging out with friends, playing video games and going … Continue reading →

Locate the dirt within the optics of your microscope If you see a spot of dirt on your image when viewing at all objective powers, the dirt is likely to be on the eyepiece lens. However, if you only see … Continue reading →

The main reason you stain a specimen before putting it under the microscope is to get a better look at it, but staining does much more than simply highlight the outlines of cells. Some stains can penetrate cell walls and … Continue reading →

Fujifilm little bit ahead because of they use the sony sensor, but canon use own sensor that is not similar quality compare to sony. But dual pixel autofocusautofocusAutofocus accuracy within 1/3 of the depth of field (DOF) at the widest … Continue reading →

Are lenses painful? This question can be answered simply: no contact lenses should not hurt. If they do, you should talk to your eye doctor as soon as possible. Contacts may feel a little uncomfortable as your eyes adjust, particularly … Continue reading →

8 Wide-Angle Single… Fujifilm Fujinon XF 56mm F1. Worth waiting for? Fujifilm XF 50mm F2 R WR Fujifilm XF 10-24mm F4 R OIS 481 I own it 100 I want it 107 I had it Discuss in the forums 1026 … Continue reading →

Sync IS is available on the E-M1, E-M5 Mark II and PEN-F. Do Olympus lenses have image stabilization? Unlike conventional DSLR camera systems, the Olympus interchangeable lens camera system has its image stabilisation (IS) system built into the camera body, … Continue reading →