Lenses · Macro
Macro lenses for machine vision
A macro lens images a small object large: the field of view is comparable to the sensor itself. This is how connector contacts, solder joints, engraving and cutting-tool edges are inspected. Working distances across the range run from 59 to 550 mm depending on the version and the chosen magnification; focal lengths from 25 to 75 mm. A regular lens with an extension ring reaches a similar scale, but a macro lens is designed for exactly this.
- Warranty
- 36 months
Specifications
| Operating temperature | –20 °C to 60 °C (–4 °F to 140 °F); –10 °C to 50 °C (14 °F to 122 °F) |
| Iris control | Manual |
| Focus control | Manual |
| Flange focal length | 17.526 mm |
| Filter thread | M27.5 × 0.5 |
| TV distortion | 0.07%; 0.05%; 0.02% |
Part numbers and versions
| Part number | PN | Focal length | Magnification | Working distance range | Aperture | Format | Mount | |
|---|---|---|---|---|---|---|---|---|
| KF1628M-ML | 365002538 | — | — | — | — | — | — | |
| KF2528M-ML | 310100611 | 25 mm | 0.1 x to 0.4 x | 65 mm (0.4 x) to 260.4 mm (0.1 x) | F2.8 to F16 | Φ17.6 mm (1.1") | C-mount | |
| KF3528M-ML | 102203082 | 35 mm | 0.25 x to 0.7 x | 59 mm (0.7 x) to 150 mm (0.25 x) | F2.8 to F16 | Φ17.6 mm (1.1") | C-mount | |
| KF5028M-ML | 102202822 | 50 mm | 0.5 x to 0.8 x | 95.4 mm (0.8 x) to 132.4 mm (0.5 x) | F2.8 to F16 | Φ17.6 mm (1.1") | C-mount | |
| KF7538M-ML | 102203083 | 75 mm | 0.18 x to 0.38 x | 257 mm (0.38 x) to 471 mm (0.18 x) | F3.8 to F16 | Φ17.6 mm (1.1") | C-mount | |
| MVL-MF7538M-ML | 310102246 | 75 mm | 0.16 x to 0.46 x | 250 mm to 550 mm | F3.8 to F12 | Φ11 mm (2/3") | C-mount |
How to choose
The key parameter here is magnification rather than focal length: it sets how much of the part fits in the frame, and it changes together with working distance — the table below lists them as a pair. Depth of field at this scale is small, so the object must be flat and firmly fixed.
FAQ
Why is magnification the first macro-lens parameter?
Magnification sets how much of the part fills the frame and changes together with working distance. Select those two values as a pair. The listed ranges extend from 0.1 x to 0.8 x across the specified KF models.
Which model covers the highest listed magnification?
KF5028M-ML reaches 0.8 x, the highest stated value in the family. Its full range is 0.5 x to 0.8 x, paired with working distances from 132.4 mm at 0.5 x to 95.4 mm at 0.8 x.
How do the two 75 mm macro choices differ?
KF7538M-ML covers Φ17.6 mm (1.1 inch), 0.18 x to 0.38 x and 257 to 471 mm. MVL-MF7538M-ML covers Φ11 mm (2/3 inch), 0.16 x to 0.46 x and a stated working-distance span of 250 to 550 mm.
What mechanical condition matters at macro scale?
Depth of field is small, so the object should be flat and firmly fixed. The lens-to-object position must also follow the distance associated with the chosen magnification; changing that distance changes the scale relationship.
Which aperture ranges are represented in the family?
KF2528M-ML, KF3528M-ML and KF5028M-ML run from F2.8 to F16. KF7538M-ML runs from F3.8 to F16, while MVL-MF7538M-ML runs from F3.8 to F12. Keep aperture choice aligned with format and magnification.