AmScope 4X Plan Achromatic Objective Lens with Knurled Ring

A number of years ago I built an optical bench style microscope and paid $750 for two microscope objective lenses. I recently purchased a used microscope that lacked objective lenses. I bought an AmScope 10X plan objective to test the quality of the lens. Since then I have purchased AmScope 4X and 20X plan objective lenses. The lenses are high quality, have weight, with good resolution and a flat field. The lenses are coated and have good contrast. Given their price, I was pleasantly surprised.

I wanted a 4X objective for my Nikon Labophot microscope. After spending a lot of time thinking about getting a CFN objective I read a little about this objective and decided to take a chance. At this price, it really can't be beat. Works great on the Labophot and I would have had to spend several times as much for an objective which was a real improvement over it. I have it hooked up to an APS-C camera. I posted one image of an aphid exactly as it came out of the camera. and one image after using a bit of focus stacking and Photoshop. As you can see, it can just almost fill an APS-C sensor. It may be possible to fill it with a bit more extension than I had. While I have not yet tried to use it for this application this lens is getting a lot of use for extreme macro photography. Typically rather than using a microscope people make direct connections to a camera. The idea here is get a series of adapters and extension tubes to connect the objective 160mm away from a DSLR/Mirrorless camera sensor. Then typically a macro rail such as a Stackshot is used to take a series of photos and a software package like Zerene Stacker is used to make a final image. Since this is a finite lens it does not require a tube lens and is very simple to hook up. Unusual for finite objectives it does not seem to require significant corrections from the eye piece and the fact it was designed to work with a cover slip apparently does not degrade the image much either. At this price point it really is an obvious choice.

I have adapted this to use on a sony a6400 and it produce sharp images but the DOF is very shallow so will require focus stacking in order to produce usable images.; so it's only really useful on static subjects. Also, FYI just in case it wasn't clear, there is no control over aperture or focus distance.

This is a great little objective. RMS mount but not infinity focused of course (those are expensive). Which means I could mount onto my dSLR and take 4x magnification macro shots. There’s a little more to it of course… need an M42 to RMS adapter, then a step up ring from M42 to M52M. That’s just an example - what you really do will depend on your digital camera. One thing to remember is that this is a 160mm focus point. So to get it to focus onto your camera’s sensor, you’ll need a bellows (probably). A Nikon has a flange distance of 46.5mm, plus the objective usually takes something like 10mm off the 160mm distance to accommodate the microscope. So a bellows set to 103.5mm will get you a sharp focus (160 less 10 less 46.5). Your subject will also have to be well lit, in combination with a higher ISO.

I used this with a 75-300 f/4-5.6 with an RMS-M58 adapter and a Rebel T5, not a great lens or a great camera but the results look quite sharp to me! I'm sure with better optics behind this objective the results would be even better.

Cumple con lo prometido.

This review is more about the company than it is about the lens. Every source that I respect on the subject of macro photography has had good things to say about this lens. FedEx lost my order, I wrote to the company and Steve Q replied promptly and arranged to have a new one sent right away. Will definitely be ordering from them again.

I’m siding this with a 3d printed body and adapter to fit my D850. The results are on the soft side, not sharp. But for the price, you can’t beat it. I did needed up buying a dedicate micro lens tho. But for the price, is 5 stars to get into the hobby.

Lo he comparado con el JML 21, que también tengo (me costó 350€) y este objetivo se acerca bastante en calidad. Lo que dado su precio es una compra muy recomendable. Su uso ha sido en fotografía de macro extremo con tubos de extensión.

Per il prezzo che ha si dimsotra un buon obiettivo. Lo uso per microfotografia e mostra una discreta nitidezza ed una discreta resa dei colori.

Encontré este objetivo Amscope porque vi en internet que lo recomendaban mucho para Macrofotografía, está genial y funciona a la perfección, muy útil para empezar con Macrofotografía. Feliz con la compra, aparte sí llegó en buenas condiciones

Utilizado en una cámara para macro fotografía, la calidad de la imagen es mejor de lo que esperaba 🥳🥳🥳🥳, estoy muy muy contento con mi compra 🥳🥳🥳🥳📸

Cant really tell the difference between the good lenses and the cheapo's.