Contents
In short
There are two kinds of microscope that matter to a hobbyist, a family or a school. A compound microscope works at 40x to 1,000x on thin samples on a glass slide, which means cells, pond water and prepared specimens. A stereo microscope works at 10x to 40x on whole solid objects in 3D, which means insects, coins, rocks and circuit boards. A digital microscope with a screen is a stereo-style view on a display, and it's the easiest to share. If you want to see cells, buy compound. If you want to see things you can hold, buy stereo or digital. The head type (monocular, binocular, trinocular) is a comfort and camera question, not a type question.
Almost every microscope question comes down to the same thing, which is that the buyer has a picture in their head of what they want to look at and doesn't know which instrument shows it to them. This guide answers that. It covers the two main types, the digital alternative, what the head types mean, how much magnification you need, and then our picks at each budget. If you'd rather skip to the recommendation, the table near the end does it in one line per use.
Stereo or compound: what each one is for
A compound microscope is the design you probably picture. There's an eyepiece on top, a turret of three or four objective lenses underneath, a flat stage with clips, and a light below the stage shining up. Light passes through the sample and into the lens, so the sample has to be thin enough to be transparent, which is why compound microscopes are used with glass slides. Magnification runs from about 40x to 400x on a beginner's model and up to 1,000x or more on better ones. This is the microscope for cells, bacteria (just about, at 1,000x), blood, plant sections, pond life, yeast, mould and the prepared slides every school biology course uses.
A stereo microscope, sometimes called a dissecting microscope, works the other way round. Light comes from above (daylight, a desk lamp or built-in LEDs), bounces off the object and up into two separate optical paths, one for each eye. Because each eye gets a slightly different view, you see depth, exactly as you do without a microscope. Magnification is low, usually 10x to 40x, and the gap between the lens and the object (the working distance) is large, often 50 to 100 mm, so you can hold tweezers, a pin or a soldering iron under the lens while you look. This is the microscope for insects, flowers and seeds, coins and stamps, rocks, fossils, fabric, print and electronics.
The two are not interchangeable. A compound microscope can't focus on a whole beetle because the beetle isn't transparent and is far too thick, and a stereo microscope can't show you a cell because 40x isn't enough and the light is coming from the wrong side. If you can describe what you want to look at, you've chosen your type.
| You want to look at | Buy | Why |
|---|---|---|
| Cells, blood, bacteria, pond life, prepared slides | Compound | Needs 100x to 1,000x and light through the sample |
| Insects, flowers, seeds, feathers | Stereo | Whole objects in 3D at 10x to 40x |
| Coins, stamps, jewellery, watch parts | Stereo or digital | Solid objects, lit from above, often photographed |
| Circuit boards, soldering, repair | Stereo or digital | Working distance for tools, 10x to 40x |
| Rocks, minerals, fossils, sand | Stereo | Surface texture in 3D |
| School biology homework | Compound | The syllabus is built around slides |
| A child under eight, "everything" | Stereo or digital first | No slide preparation, instant results |
Monocular, binocular or trinocular
These words describe the head of the microscope, not the type, and they apply to compound and stereo models alike. Monocular means one eyepiece. Binocular means two eyepieces looking at the same image (on a compound microscope) or at two separate images (on a stereo microscope, which is what produces the 3D effect). Trinocular means two eyepieces plus a third tube pointing straight up, into which a camera can be fitted.
For a compound microscope, monocular is lighter, cheaper and perfectly good for children and anyone using it for half an hour at a time. Binocular is more comfortable for long sessions, because you're not squinting one eye shut, and it's what adult hobbyists and schools tend to prefer once budget allows. Our launch range, the LabZZ M101, Rainbow 2L and Rainbow 50L PLUS, is monocular; binocular models follow.
LabZZ M10140x to 640x, under £50
Rainbow 2L40x to 400x, under £100
Rainbow 50L PLUS64x to 1280x, £100 to £200
For a stereo microscope, binocular is the norm because two eyepieces are what make it stereo. A so-called monocular stereo microscope isn't really stereo at all.
Trinocular only matters if you plan to photograph or film regularly. For occasional photos, a phone adapter clamped over a standard eyepiece does the job for under £40 and works on any head type.
Digital microscopes with a screen
A digital microscope replaces the eyepiece with a camera and shows the image on a built-in LCD screen. In use it behaves like a stereo microscope: it lights the object from above, it covers roughly 20x to 500x, and it's for solid things rather than slides. What it adds is that everyone round the table sees the same picture at once, photos and video save to a memory card, and there's no eyepiece to line up, which suits children, groups and anyone who finds eyepieces uncomfortable. What it loses is true depth perception, since you're looking at a flat screen.
A screen model is a different thing from a USB microscope, which is a camera on a stick that needs a laptop and usually comes with a stand too flimsy to hold focus. For adults looking at coins, electronics or plants, a digital microscope with a proper stand and screen, such as the DTX 350 or DTX 500, is the better buy almost every time. Our digital microscope guide compares the two in detail.
How much magnification you really need
Less than the box suggests. For a compound microscope, 40x shows a whole prepared specimen, 100x shows the structure of plant tissue and individual pond creatures, 400x shows cells and their nuclei clearly, and 1,000x is for bacteria and fine detail, and only works well with good lenses and careful lighting. A beginner's compound microscope that tops out at 400x or 640x covers almost everything a hobbyist or a GCSE student will do.
For a stereo microscope, 10x to 20x shows a whole insect or a coin, 30x to 40x shows the detail on them. Most entomology and electronics work happens at 20x.
Numbers like 1,200x or 2,000x on a cheap microscope are marketing. The detail a lens can resolve is fixed by its quality, and multiplying a blurry image makes a bigger blurry image. Our magnification guide goes through the maths and shows what you actually see at each power.
Our picks at each budget
These are the instruments we stock and would buy ourselves for each job. Prices are bands rather than exact figures, because they move.
| Use | Our pick | Type | Band |
|---|---|---|---|
| A child's first microscope, under ten | Levenhuk LabZZ M101 | Compound, monocular, 40x to 640x | Under £50 |
| First proper microscope for a family or beginner | Levenhuk Rainbow 2L | Compound, monocular, 40x to 400x, upper and lower light | Under £100 |
| GCSE, A-level and serious hobby biology | Levenhuk Rainbow 50L PLUS | Compound, monocular, 64x to 1280x, metal body, achromatic lenses | £100 to £200 |
| Insects, coins, rocks in 3D | Levenhuk 2ST | Stereo, binocular, 40x, 60 mm working distance | £100 to £200 |
| Looking on a screen, long battery | Levenhuk DTX 350 LCD | Digital, 4.3-inch screen, 20x to 300x | £100 to £200 |
| Photos, measurement, electronics repair | Levenhuk DTX 500 LCD | Digital, 3.5-inch screen, 5 MP camera, 20x to 500x | £200 to £300 |
Whichever you choose, budget for slides if it's a compound microscope. The Levenhuk models come with five prepared slides in the box, and the N20 NG set adds twenty more for around £25, which is the single best upgrade to a new microscope.
FAQs
What is a compound microscope?
A microscope with two stages of magnification, an objective lens near the sample and an eyepiece near your eye, whose powers multiply together. Light passes through the sample from below, so it's used with thin specimens on glass slides. "Light microscope" and "biological microscope" mean the same instrument.
How does a stereo microscope work?
It has two complete optical paths set a few degrees apart, one for each eye, looking at an object lit from above. Your brain combines the two slightly different images into one with depth, the same way your eyes do unaided. The result is a 3D view at low magnification, usually 10x to 40x.
Compound vs stereo: which is better for a child?
Under about eight, stereo or digital, because there's nothing to prepare and the first look is rewarding. From eight, a compound microscope with a built-in light and some prepared slides, which is what school will ask for. Our kids' guide goes age by age.
Monocular vs binocular microscope: does it change what I can see?
On a compound microscope, no. Both eyepieces show the same image, so binocular is about comfort. On a stereo microscope, binocular is what produces the 3D view, so it does matter there.
Can one microscope do both jobs?
Not well. A compound microscope with upper lighting, such as the Rainbow 2L, can show the surface of a coin or a leaf at 40x, which is a useful bonus, but it's a flat, cramped view compared with a stereo microscope. If you want both, buy the compound first for slides and add a stereo later.
Price bands checked October 2026 against our own listings. Every microscope above is dispatched from our warehouse in Northern Ireland with a 14-day return period.
