William Optics 48mm Wide T-Ring for Pentax K-Mount Cameras - Black
Ships by Next Business Day
Contiguous US Customers:
All items we sell ship for free within the Contiguous US. Shipping will be via the cheapest shipping method which will vary depending on the items in your order. During checkout, you may also be shown other optional faster shipping choices.
US Customers in Hawaii and Alaska:
Free shipping applies to almost all products. A few large telescopes and mounts are excluded from this free shipping offer. For these items, please contact us to obtain a shipping quote before you check out using the online shopping cart.
International Customers:
Free shipping does not apply to international orders. During check-out, you will be presented with several shipping choices and costs. However, the export of some items may be restricted outside the US due to size or manufacturer restrictions.
- T-Ring to convert your Pentax K-Mount camera mount to a standard 48mm thread for attachment to various astronomy accessories
- Fits all Pentax K-Mount cameras
- M48 female thread has a diameter of 48mm and a thread pitch of 0.75mm
- Compatible with wide format 48mm T-threaded accessories only
- NOT for use with the smaller, more common standard 42mm T-threaded adapters and accessories which have an M42x0.75 thread (42mm diameter x 0.75mm pitch)
- Optical path length: 9.54mm
- Perfect for use with M48-threaded corrective telescope optics (correctors and flatteners) that have a back focus requirement of 55mm. The Pentax K camera's FFD (flange focal distance) of 45.46mm plus this T-ring's optical path length of 9.54mm will get you to 55mm without the need to any additional adapters.
- CNC-machined aluminum with black finish
- Weight: 65g
| Product Banner Type | new |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Hide Found a better Shipped Price on Frontend? | No |
- T-Ring to convert your Pentax K-Mount camera mount to a standard 48mm thread for attachment to various astronomy accessories
- Fits all Pentax K-Mount cameras
- M48 female thread has a diameter of 48mm and a thread pitch of 0.75mm
- Compatible with wide format 48mm T-threaded accessories only
- NOT for use with the smaller, more common standard 42mm T-threaded adapters and accessories which have an M42x0.75 thread (42mm diameter x 0.75mm pitch)
- Optical path length: 9.54mm
- Perfect for use with M48-threaded corrective telescope optics (correctors and flatteners) that have a back focus requirement of 55mm. The Pentax K camera's FFD (flange focal distance) of 45.46mm plus this T-ring's optical path length of 9.54mm will get you to 55mm without the need to any additional adapters.
- CNC-machined aluminum with black finish
- Weight: 65g
| Product Banner Type | new |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Hide Found a better Shipped Price on Frontend? | No |
William Optics 48mm Wide T-Ring for Pentax K-Mount Cameras - Black # TM-PT-K-M48