PEARL F2.8/28 mm
large format lens

Key features

Uniform MTF from center to edge
Low distortion
Low chromatic aberrations
M42x1 mount with integrated focusing

Request quote

schneider-kreuznach-pearl-lens-f2-8-28mm-m42x1-1113086.png

A vibration-resistant industrial lens for large-area and line-scan sensors, delivering consistent image quality with low chromatic aberration and distortion across a wide magnification range.

This vibration-resistant lens is designed for use with large-area and line-scan sensors in harsh conditions, as encountered in many industrial applications. Its highly homogeneous imaging performance across the entire image field, combined with low chromatic aberrations and geometric distortions, ensures very high image quality across a wide magnification range. The M42 x 1 mount with integrated focusing is compatible with a variety of industrial line and area sensor cameras.

Downloads

Datasheet

Stepfile

Product sheet

Lens selector

Product brochure

Catalog

Any questions?

Contact

Technical specifications: PEARL F2.8/28 mm M42x1

Type [standard]	M42x1
ID [standard]	1113086
Interface	M42x1
Focal length [mm]	28
Aperture range F/#	F/2.8 ... F/22
Numerical aperture [object \| image]	- \| 0.18
Maximum sensor size [mm]	28.7
Maximum angle of view [°]	54
Recommended magnification range	-0.25 ... 0
Recommended working distance range [mm]	132 ... 693
Minimum working distance without extension tubes [mm]	100
Filter thread [mm]	M37 x 0.75
Storage temperature [°C]	-25 … +70
Net weight [g]	115
Additional info	-
f'eff [mm]	28.06
SF [mm]	-10.30
S'F' [mm]	20.13
HH' [mm]	-0.23
ß'P	1.13
SEP [mm]	14.60
S'AP [mm]	-11.49
Σd [mm]	25.46

Lens specifications glossary

Specification	Description
Focal length	Nominal focal length
Aperture range F/#	Image space F-number range for infinity focus position
Numerical aperture	Maximum real numerical aperture (depending on recommended magnification range either for infinity or respective fixed magnification)
Max. sensor size	Image circle diameter
Max. angle of view	Angle of view associated with maximum sensor size (depending on recommended magnification range either for infinity or respective fixed magnification)
Rec. magnification range	Magnification range as recommended by Schneider-Kreuznach
Rec. working distance range	Working distance, i.e. distance between object and first mechanical element, associated with recommended magnification range
Net weight	Weight of unpacked lens without lens cap
f'eff	Effective focal length
SF	Distance between vertex of first lens surface and object space focal point
S'F'	Distance between vertex of last lens surface and image space focal point (back focal distance at infinity)
HH'	Distance between principal planes
ß'P	Pupil magnification (= exit pupil diameter / entrance pupil diameter)
SEP	Distance between vertex of first lens surface and entrance pupil
S'AP	Distance between vertex of last lens surface and exit pupil
Σ d	Distance between vertices of first and last lens surface
s'A	Flange focal distance (in air) for infinite object distance (depending on recommended magnification range either for infinity or respective fixed magnification)
ß'	Magnification (= image size / object size), negative value because image is inverted
OO'	Distance between object and image
Info	Unless otherwise stated all dimensions in this data sheet are in mm

Picture of the lens

Technical drawing

Relative illumination vs. image height

Distortion vs. image height

Transmittance vs. wavelength

MTF charts

Spectrum name	VIS
Wavelengths [nm]	425	475	525	575	625	675
Rel. weights [%]	8	16	23	22	19	13

Accessories for the PEARL F2.8/28 mm M42x1 lens

Maximise the potential of your industrial lens with our high-quality accessories including camera adapters, extension tubes, filter holders and UNIFOC.

1105877

Extension tube
M42x1/M42x1 5 mm

1105878

Extension tube
M42x1/M42x1 10 mm

OTHER PEARL Lenses

PEARL 2.8/35 V38

schneider-kreuznach-amber-lens-f2-8-35mm-v38-1112805.png

Do you have any questions or comments? Then please contact us. We will get back to you as soon as possible. To help us process your request, please fill out all fields marked with *.

Business Unit/Topic* Required

Product

Company* Required

Country* Required

Salutation

First name* Required

Last name* Required

Email* Required

Phone

Your message* Required

Data protection* Required

I agree that my data will be processed and used by Jos. Schneider Optische Werke GmbH for dealing with my request or sending product information.

The data will not pass on to third parties. This is about our privacy.

Newsletter

I agree that Jos. Schneider Optische Werke GmbH will provide me with information on current offers and promotions, new products and services as well as invitations to exhibitions and events via e-mail.

Completely free of charge and without obligation. I am aware that my data/ usage behavior is stored electronically. You can unsubscribe this service at any time in any newsletter, or your consent to the Jos. Schneider Optische Werke GmbH.

Headquarters - Europe

Jos. Schneider Optische Werke GmbH
Ringstraße 132
55543 Bad Kreuznach | Germany
+49 (0) 671 601 0

Business Units

Business Unit Industry
+49 (0) 671 601 205
isales@schneiderkreuznach.com

Business Unit Photo/ Cine
+49 (0) 671 601 551

B+W belongs to the Photo division
photo@schneiderkreuznach.com
cine@schneiderkreuznach.com

Offices Worldwide

America
+1 800 645 7239 (East Coast)
+1 800 228 1254 (West Coast)

Asia
+86 755 8832 1170

Singapore
+65 9488 0062