M37-M42 Mount Adapter (KJAFDSXNR) by Ryo_MROpt
1.5-26mm Adjustable Iris Diaphragm M30 to M37 Camera Lens Module Adapter Ring | eBay
High Quality Adapter Ring M37-M42 full tooth ring M37 * 0.75 M42 * 1 internal
Adjustable Aperture 1.5-26mm Iris Diaphragm M30 to M37 Camera Lens Module DIY Retrofit Adapter Ring - AliExpress
![RARE] Asahi Pentax Takumar 83mm F/1.9 for M37 Mount w/ M42 Adapter from Japan | eBay](https://i.ebayimg.com/images/g/YvoAAOSwD45fBSxD/s-l1600.jpg "RARE] Asahi Pentax Takumar 83mm F/1.9 for M37 Mount w/ M42 Adapter from Japan | eBay")
RARE] Asahi Pentax Takumar 83mm F/1.9 for M37 Mount w/ M42 Adapter from Japan | eBay
![RARE] Asahi Pentax Takumar 83mm F/1.9 for M37 Mount w/ M42 Adapter from Japan | eBay](https://i.ebayimg.com/images/g/zcsAAOSwZPpfBSxL/s-l400.jpg "RARE] Asahi Pentax Takumar 83mm F/1.9 for M37 Mount w/ M42 Adapter from Japan | eBay")
RARE] Asahi Pentax Takumar 83mm F/1.9 for M37 Mount w/ M42 Adapter from Japan | eBay
For Sale - Sold Genuine vintage Asahi Pentax M37-M42 converter ring with original box - PentaxForums.com
M42 adapter - PentaxForums.com
M37-M42 Mount Adapter (KJAFDSXNR) by Ryo_MROpt
High Quality Adapter Ring M37-M42 full tooth ring M37 * 0.75 M42 * 1 internal thread M37 M42 external thread M42
M37-M42 Mount Adapter (KJAFDSXNR) by Ryo_MROpt
![RARE] Asahi Pentax Takumar 83mm F/1.9 for M37 Mount w/ M42 Adapter from Japan | eBay](https://i.ebayimg.com/images/g/cEAAAOSwwpZfBSxa/s-l400.jpg "RARE] Asahi Pentax Takumar 83mm F/1.9 for M37 Mount w/ M42 Adapter from Japan | eBay")
RARE] Asahi Pentax Takumar 83mm F/1.9 for M37 Mount w/ M42 Adapter from Japan | eBay
M37-M42 M37 x 0.75 Female to 42mm x 1 Male Screw Camera Lens adapter
M37-K Mount Adapter (ZZV3WVBWS) by Ryo_MROpt
Amazon.com : Adjustable Iris Aperture Diaphragm M30 to M37 Iris Aperture Diaphragm Adapter Optical Diaphragm 1.5-26mm Lens Module Adapter Ring PVS-14 PSV14 Optics : Electronics
M37.5 x 0.5 Male to T-Mount Female Step-Up Adapter | Edmund Optics
APM Telescopes. TS-Optics Optics Adapter M37 - T2 - camera connector to BW spotting scopes - digiscoping
Adjustable 1.5-26mm Iris Diaphragm M30 to M37 Camera Lens Module Adapter Ring | eBay
Tele-photo Takumar 135mm F3.5 Reviews - M37 Screwmount Prime Lenses - Pentax Lens Reviews & Lens Database
Adjustable Iris Diaphragm Aperture Module Camera Lens Adapter 1.5-29mm M30 to M37 M42 to M42 Camera Lens Module Adapter Ring - AliExpress
Adjustable 1.5-26mm Iris Diaphragm M30 to M37 Camera Lens Module Adapter Ring | eBay
Adjustable Aperture 1.5-26mm Iris Diaphragm M30 to M37 Camera Lens Module DIY Retrofit Adapter Ring - AliExpress
M37 37x0.75mm Female to M42 42x1mm Male M37-M42 Thread All Mount Adapter Ring | eBay
M 37 lens to M 42 body adapter?? - PentaxForums.com
![RARE] Asahi Pentax Takumar 83mm F/1.9 for M37 Mount w/ M42 Adapter from Japan | eBay](https://i.ebayimg.com/images/g/nK0AAOSw4rxfBSxI/s-l1200.webp "RARE] Asahi Pentax Takumar 83mm F/1.9 for M37 Mount w/ M42 Adapter from Japan | eBay")