Manufacturer: Baader .. Adapter
Product number: BA2958550

EUR 69,00


incl. 19 % VAT (DE)  
The VAT indicated refers to that applicable in Germany. After logging in, the VAT amount is adjusted to the applicable VAT of the stored delivery country. Therefore, the final price may vary accordingly.
excl. 6.95 € shipping costs (DE)  
Please log in to calculate shipping costs to your country.
more details to the shipping costs ...

  • On stock





rating: 5.0 of 5
  • Details..
  • Technical data..
  • In the box..
  • Reviews..
The Protective T-Ring for Canon EOS DSLR cameras offers (beneath mechanical benefits) problem solvings. It accepts (low-profile) mounted 2" and unmounted 50.4 mm filtes and can be placed in front of the camera body without wasting optical length.

Advantages and fields of use of the Baader Protective T-ring:
versatile adaptation to telescopes and tele lenses with best mechanical quality
use filters directly in front of the camera without loosing valuable optical path
protect your camera sensor: the ring can always remain in front of the camera so no dust can intrude
expose free of vignetting, even with fast systems


Alternative to clip filters and camera retrofittings:
Baader´s Protective T-Ring is an alternative to camera conversions with special filters. Just remove the internal filter completely for maximum astro-performance and choose an interchangeable filter for your indivdidual needs. We also offer this service: Art.No. DSLRUmbauOF.

Instead of directly in front of the sensor, the IR filter is integrated into the T-ring. Or use the effective Baader UHC nebula filter.

Click on "reviews" and learn how to use the filter together with correctors with 55 mm working distance.

We offer the Baader Protective T-Ring with already installed filters, too. See the accessories section for more details.
Suitable filters:2" low-profile mounted and 50.4 mm unmounted
Connections:T2, M48x0.75 and 2"
Mechanical length:11.5 mm
Optical length:10.5 mm (with filter)
1. Protective T-Ring for CANON EOS body
2. Optional: Baader clear protective filter, 50.4mm x 3mm (protective T-rings are available with
a range of pre-assembled filters ñ see price list or the label on the product packaging)
3. Temperature compensation ring (to prevent filter damage at high temperatures)
4. S52/M48 adapter ring (M48 corresponds to the international 2" Astro filter thread)
5. M48/T-2 insert ring
6. S52/2" connector socket (with additional 2" M48 filter thread on the front side)
Baader Canon protective T-ring with filter - why does it shorten the optical length?
The mechanical length of the protective T-ring is 11.5 mm. This is slightly longer than the standard T-ring with 10 mm. But nevertheless the protective T-ring can be used instead of a standard T-ring. You maintain the required back focus of standard correctors even if the in-fact position is 1 mm farer away than a standard ring.

Why? The filter is the answer. Although it does not alter the focal length, it shortens the effective length by approx. 1/3 of its thickness. The optical rays follow a different path inside the filter. As the Baader filters are 3 mm thick, 1/3 of this amount is 1 mm. So the glass path of the filter shortens the optical length from 11.5 to 10.5 mm. You are inside the corrector´s tolerance with this value.

If you use the standard correctors designed for 55 mm back focus, you´ll have perfect stars with your DSLR camera. Baader´s protective T-ring as an alternative to Canon IR-cut filter retrofittings: Canon EOS cameras should be modified for astronomical use because their internal standard IR cut filter is not intended for astronomical objects. Often this filter is replaced by another IR filter with better H-alpha transmission or by a so-called clip-filter.

The alternative: The original filter can also be removed without replacement. We offer this service with the article "DSLRUmbauOF". Now you can place a filter of your choice directly in the Baader protective T-ring.

Advantages:
Benefit from the wide choice of 2" filters
Less internal reflections because the filter is farer away from the sensor
The camera body is protected against dus
Less vignetting, especially with full format sensors
Changing the filter is easier


Compared with clip-in-filter solutions, you gain further advantages:
The filter can be used for both APS-C and full format DSLR cameras
Optimal field illumination without T2-bottleneck
The whole internal room of the camera is protected, not only the sensor
The protective T-ring is filter holder AND camera adapter in one
Best mechanical adaptation possible
Mounted standard 2" filters and unmounted 50.4 mm filters can be used.



Recommended accessories

Reviews

Written by Nuno Casanova
on 2020-06-20

"no problems, do what is intended to."

Written by Nikolaus Hanjohr-Popa
on 2018-07-10

"Spitzen Ding!"

Written by Klaus Piber
on 2018-05-04

"Für DSLR-User äußerst praktisch. Verarbeitung ist hochwertig."

Written by Gunter Beer
on 2017-11-17

"Sehr gute Qualität Ich bin glücklich mit dem Teil ***"

Written by Nadir Ertug
on 2016-12-21

"expensive but good product."

Written by Klaus Schröter
on 2016-07-30

"Alles Top"

Written by Dirk Fahrendholz
on 2016-06-12

"Sehr praktischer und vielseitiger T-Adapter für Canon EOS Kamera. Der zugehörige Stirnlochschlüssel ist aber absolut dazu zu empfehlen, da sonst schnell der eingeschraubte T2/2"" Adapter nicht mehr zu entferenen ist."

Written by Fakhri Al-Alami
on 2016-06-01

"excellent product, very solid"

Written by Fernando Correa
on 2015-12-31

"Amazing mechanic precision. High quality finish."