rear groupe kit

Entaniya Fisheye 250
Rear Group Kit


Interchangeable parts for 250°Fisheye Lens

By using Entaniya Fisheye 250 Rear Group Kit and changing the rear lens, you can change the focal length (image circle size) and aperture.

The price: ¥65,000 JPY (Tax-exclusive price)

Use for

Change Focal length (Image Circle Size)

Change Focal length (Image Circle Size)

In case of Entaniya Fisheye 250 Rear Group Kit,
you can change the focal length (image circle size)
afterwards by yourself so you don't have to purchase new lens for that.


Change Aperture


By changing the aperture with the tool included in Entaniya Fisheye 250 MFT Rear Group Kit,
you can adjust the brightness as you prefer.

*Please note that this product is still under the development and therefore the specifications are subject to change.

Entaniya Fisheye 250 Rear Group Kit Specifications

*There's only one kind of rear lens included in this kit. Please purchase a kit according to the size you need.

Name Rear Group Kit 2.3 Rear Group Kit 3.0 Rear Group Kit 3.6
Focal length 2.3mm 3.0mm 3.6mm
FOV(4/3") 250°(h:250°/v:250°) 250°(h:250°/v:250°) 250°(h:250°/v:220°)
F number f=2.3mm F/2.8 f=3.0mm F/2.8 f=3.6mm F/4.0
Image Size 190° = φ7.344mm 180° = φ9.2mm 180° = φ11mm
Manufactured Made in Japan(except:caps)
Tax-exclusive price The price ¥65,000 JPY (Tax-exclusive price)
Parts contained ・Interchangeable Focus lock ring 1pc
・Interchangeable Rear lens 1pc
・Screw 3pcs
・Exclusive tool for Rear lens 1pc
・Exclusive tool for cover 1pc
・Aperture ring 3pcs *One is already attached to the rear lens.Parts contained differ according to sets).
・ND Filter (0.6/1.2) one each
Note In order to make Entaniya Fisheye 250 2.3 and Entaniya Fisheye 250 3.0 compact in size the back of the lens has a bump. It might be impossible to install the lens to some cameras such as OLYMPUS OM-D E-M5(Mark1), OLYMPUS PEN E-PL6/E-PL5 and OLYMPUS PEN E-PM1/E-PM2 since the image sensor of these cameras interrupts the installation.
If you have any questions please feel free contact us.
Data Manual(PDF)About how image circles are cropped on sensors.(PDF)
※The appearance, specifications, and the like of the product are subject to change for improvement without notice.

Manual Video

Please check below videos that how to change the lens parts.

How to change the rear group

How to change the aperture

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