Bresser Additional Objective for Science ETD-201
Bresser Additional Objective for Science ETD-201
An auxiliary lens that fits under the zoom head of the Science ETD-201 and shifts its whole range. The 0.7x takes the microscope down to 5.6x to 35x, and the 2x takes it up to 16x to 100x. Bresser lists both for the ETD-201 only.
The 0.7x is the one for working under the microscope with tools, because it raises the working distance, the gap between the lens and the object in focus, to 137 mm, and it gives a larger, brighter field that also suits a camera on the third tube. The 2x goes the other way and brings the lens a little closer, but Bresser points out that the depth of field at the resulting power is greater than you'd get by reaching the same figure with stronger eyepieces, so a conversion lens like this is its preferred route past 50x.
Each lens comes on its own. The 2x is aluminium. Our guide to magnification explains why depth of field shrinks as power rises, and the other stereo parts are in microscope accessories.
Bresser Additional Objective for Science ETD-201
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Specification
| Brand | Bresser |
|---|---|
| Model number | 5941492 |
| Objectives | 0.7x (5.6x to 35x, 137 mm working distance) or 2x (16x to 100x) |
What’s in the box
- One additional objective in the chosen magnification
Can I return it if it’s not right?
Yes. You have 14 days from delivery to tell us, and a further 14 days to send it back, for a full refund. Keep the manufacturer’s box. Faulty items are covered separately under the warranty.
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