SWIFT's own product pages give these two trinocular microscopes the same optics. The choice comes down to what ships in the box and a few details of the stand.
Side by side
SW350T
SW380T
Head
Siedentopf trinocular, rotating, 30° tilt
Siedentopf trinocular, rotating, 30° tilt
Eyepieces
10X and 25X wide-field
10X and 25X wide-field
Objectives
DIN achromatic 4X, 10X, 40X and 100X oil
DIN achromatic 4X, 10X, 40X and 100X oil
Magnification
40X to 2500X in six steps
40X to 2500X in six steps
Condenser
Abbe, NA 1.25, with iris diaphragm
Abbe, NA 1.25
Light
LED with a dimmer wheel
LED with a dimmer wheel
Stage
Large double-layer mechanical stage
Large mechanical stage
Focusing
Coarse and fine
Coarse and fine, which SWIFT calls ultra-precise
Camera
Sold with or without one; the listing here includes a USB camera
Not included; the third tube takes one
Where they really differ
SWIFT describes the optics of both in the same words. Each has the same four objectives, the same eyepieces, the same NA 1.25 condenser and an LED with a dimmer. On paper, neither has an optical advantage.
The SW380T is the camera-ready version of SWIFT's SW380B, and SWIFT highlights its ultra-precise focusing. The SW350T is built on the SW350B, with a double-layer stage and an iris diaphragm on the condenser.
The practical difference is the box. The SW350T listing here comes with a USB camera, software for Windows and Mac, 100 blank slides and 100 cover slips. The SW380T ships without a camera.
Choose the SW350T for everything in one box
Buying the SW350T with its camera means one order, one set of software and no mount to match.
The camera sits on the upright third tube, so you can keep using the eyepieces while it records. The 100X objective needs oil, covered in how to use immersion oil.
Trinocular compound microscope, 40X to 2500X, with a Siedentopf head, 10X and 25X eyepieces and four DIN achromatic objectives. The third ocular tube takes a camera.
A trinocular adds the camera port and nothing else. SWIFT says the SW350T keeps all the features of the SW350B, and the SW380T all the features of the SW380B.
If you only look through the eyepieces, the binocular versions do the same job. If you plan to photograph slides often, the port saves holding a phone to an eyepiece every time.
Common questions
SWIFT publishes the same optics for both. Pick the SW350T to get a camera in the box, and the SW380T if you already have a camera or want to choose one.
No. SWIFT lists the camera as not included. The third tube on top takes one.
Yes. SWIFT lists 4X, 10X, 40X and 100X oil DIN achromatic objectives on both, which give 40X to 2500X with the 10X and 25X eyepieces.
The SW350T adds a third tube for a camera. SWIFT says it keeps all the features of the SW350B.
Taking photos and video through the microscope while you keep using the eyepieces. The third tube holds the camera.