While it is a bit on the tight-angle end for casual street photography, the 50mm lens on a crop sensor body can still deliver outstanding results.

Microscope parts and functions

A microscope is an instrument that is used to magnify small objects. Some microscopes can even be used to observe an object at the cellular level, allowing scientists to see the shape of a cell, its nucleus, mitochondria, and other organelles. While the modern microscope has many parts, the most important pieces are its lenses. It is through the microscope’s lenses that the image of an object can be magnified and observed in detail. A simple light microscope manipulates how light enters the eye using a convex lens, where both sides of the lens are curved outwards. When light reflects off of an object being viewed under the microscope and passes through the lens, it bends towards the eye. This makes the object look bigger than it actually is.

What are microscopescalled

Though modern microscopes can be high-tech, microscopes have existed for centuries – this brass optical microscope dates to 1870, and was made in Munich, Germany.

While some older microscopes had only one lens, modern microscopes make use of multiple lenses to enlarge an image. There are two sets of lenses in both the compound microscope and the dissecting microscope (also called the stereo microscope). Both of these microscopes have an objective lens, which is closer to the object, and an eyepiece, which is the lens you look through. The eyepiece lens typically magnifies an object to appear ten times its actual size, while the magnification of the objective lens can vary. Compound microscopes can have up to four objective lenses of different magnifications, and the microscope can be adjusted to choose the magnification that best suits the viewer’s needs. The total magnification that a certain combination of lenses provides is determined by multiplying the magnifications of the eyepiece and the objective lens being used. For example, if both the eyepiece and the objective lens magnify an object ten times, the object would appear one hundred times larger.

For instance, this lens has two focusing modes: Automatic/Manual and Manual. Because I use back-button focusing on my camera, the A/M mode on the 50mm f/1.8 means I don’t have to press any buttons or change any options if I want to quickly shift between Automatic and Manual focusing. On many other lenses I would need to fiddle with a switch on the lens itself in order to change this option. That might not seem like much of a hassle, but I have been in many situations in which I needed to quickly change from Automatic to Manual focusing and back. Not having to flip a switch every time has been an incredible time saver, and resulted in much better photos with much less frustration on my part.

Compound microscope

What are microscopesmade of

Picking a favorite lens can be tricky, because there are aspects of a variety of lenses that I like. Sometimes I like to use zoom lenses, sometimes prime lenses, and other times specialty lenses like macro or ultra-wide-angle. But despite the variety of options available, at the end of the day I keep coming back to one particular lens as my pick of the litter. The lens that gets the job done no matter what situation I’m in, the one that consistently produces outstanding results more than any other, is my trusty Nikon 50mm f/1.8G. It’s a workhorse that has survived rain, cold, and even being dropped on a concrete garage floor. It’s incredible versatility is why I like to recommend it to photographers – especially those new to the craft who want to expand beyond their kit lens.

To take the idea of working within limits a step further, and help me continually experiment with photography, I started a blog called Weekly Fifty where I post one image each week that was taken with this 50mm lens. After almost two years of doing this I feel like I am just scratching the surface of what it has to offer! Whether you are a new photographer looking for an addition to your gear bag, or a seasoned professional who wants to push new creative boundaries, you can’t go wrong with this simple but powerful piece of glass.

Another key feature of this lens is its overall size. While a big zoom lens might seem tempting, and indeed they are certainly useful in a variety of situations, I like the compact size of this lens because it makes it ideal for tossing in a camera bag or carrying around for a day of casual shooting. It only protrudes a few inches from the camera, rendering it quite inconspicuous in a crowd of people. Though it is not ideal for street photography on a crop sensor body, it has allowed me to get plenty of candid shots in a variety of situations because it was simply easy to carry around on my camera.

When I was first exploring digital photography several years ago, I was enticed by the zooming function of a kit lens and could not understand why anyone would want a lens with a fixed focal length. It seemed quite limiting, and since I was just getting my feet wet I did not understand why I would spend over $200 on a non-zooming lens when I could spend less than half that on one that covered a greater variety of focal lengths. The price, I thought, made the lens a waste of money. But nevertheless I listened to the advice of my friends Ryan and Kevin and skipped the kit lens entirely, opting instead to shoot only with the Nikon 50mm f/1.8 on my newly-acquired D200. And my, oh my, what a difference that made.

Do you use a 50mm lens? Post your thoughts about it in the comments below, or share any other favorite lenses you might have as well.

The dissecting microscope provides a lower magnification than the compound microscope, but produces a three-dimensional image. This makes the dissecting microscope good for viewing objects that are larger than a few cells but too small to see in detail with the human eye. The compound microscope is typically used for observing objects at the cellular level.

What are microscopesused for

Being able to switch easily between manual and automatic focus allowed me to get this shot of a precariously-perched water droplet.

Whatis microscope in science

Other than that it works great for nature, architecture, animal, and especially portrait photography. I have done several portrait sessions with nothing but this 50mm lens, and it produces solid results if you want close-ups with beautiful blurry backgrounds or even whole group shots. While other lenses like the 85mm f/1.8 or 35mm f/1.8 are ideal for tighter or wider shots, this one lens can cover a greater variety of your photographic needs like almost nothing else. The price might seem a bit steep, but it will certainly pay off over time.

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At first glance it might not seem like a non-zooming lens would have much in the way of features, and this particular one doesn’t even have image stabilization that is found on some cheaper kit lenses! But the more I used this lens, the more I realized how many features it did have, and how much they impacted my photography.

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Types of microscope

Finally, there are a few features of the actual construction of the lens that elevate this lens as my favorite. One of the round glass elements inside the lens is aspherical, which significantly reduces some of the optical oddities caused by a defect called “chromatic aberration” that crops up on photos from time to time. This helps ensure that the photos I take using this lens are tack-sharp and have less of the strange color fringes that can show up on the edges of various elements of a picture.

Learning to work within the constraints of this lens helped me understand so much more about photography than I would have otherwise.

A microscope is an instrument that can be used to observe small objects, even cells. The image of an object is magnified through at least one lens in the microscope. This lens bends light toward the eye and makes an object appear larger than it actually is.

What are microscopesand how do they work

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Over the course of the microscope’s history, technological innovations have made the microscope easier to use and have improved the quality of the images produced. The compound microscope, which consists of at least two lenses, was invented in 1590 by Dutch spectacle-makers Zacharias and Hans Jansen. Some of the earliest microscopes were also made by a Dutchman named Antoine Van Leeuwenhoek. Leeuwenhoek’s microscopes consisted of a small glass ball set inside a metal frame. He became known for using his microscopes to observe freshwater, single-celled microorganisms that he called “animalcules.”

Noted speaker Martin Villeneuve said that “constraints can actually boost creativity,” and this has certainly been my experience with this non-zooming 50mm lens. Shooting exclusively with it for over a year helped me learn far more about photography than I ever would have otherwise. Its wide aperture unlocked creative photographic opportunities that I would have never experienced with a kit lens Also, the inability to zoom forced me to become more invested in the situations I was photographing, as well as seek out new angles from which to shoot them. This has helped me learn how to use available light much better because I rarely needed to use the on-camera flash or external speedlights, and it helped me understand how the various elements of exposure worked in tandem because there was so much room to experiment with such wide aperture values.

is an educational technology specialist at Oklahoma State University and enjoys sharing his enthusiasm for photography on his website and podcast at Weekly Fifty. He and his brother host a monthly podcast called Camera Dads where they discuss photography and fatherhood, and Simon also posts regularly to Instagram where you can follow him as @sringsmuth.

Despite what might seem like a high price tag for new photographers, this lens is quite inexpensive compared to many of its counterparts. Because its focal length is not especially wide, but not all that tight, it can be used in an astonishing variety of situations even on a crop-sensor camera. In fact, the only time I have found myself reaching for a wider lens is when I am shooting multiple people indoors. If I’m using my “Nifty Fifty” during these situations I have to either stand clear across the room or at the other end of the hallway to fit my subjects in the shot.