Canon Digital Rebel XSi (450D) Modification

by Gary Honis

 

Page 7 - Camera Re-assembly Completed

Removal of IR Cut Filter for Astrophotography

Completion of Re-assembly:

44. Install three screws as shown:

45. Insert port cover:

46. The back of the camera is now connected to the camera body with this last ribbon cable:

47. Close up the camera by sliding the camera back fully onto the camera body. Install one long screw as shown:

48. Install two screws as shown:

49. Install one screw as shown:

50. Install four screws as shown:

51. Install three screws as shown, slide on viewfinder cover and reapply sticky backed black rubber piece:

Modification completed.....Congratulations!

Next is the anxious moment.......turning the camera on and testing it to see if all works well. When I turned my camera on, I got a message to reset the date and time. This is normal since the battery had been out for a long time. I reset both and the camera functions all worked well.

I took some test images with the kit lens at 18mm. The first image was taken in my backyard with the 450D before modification as a reference. The other three images were taken after the modification. The second image was with auto white balance (AWB). The third image was taken with the X-nite CC1 filter added to the kit lens which corrects the camera to compensate for the original IR cut filter that was removed in the modification . The fourth image was taken HOYA R72 Infrared Filter. I was surprised that live-view focusing worked so well for the infrared image which was 1/10 second exposure at F4.5 and ISO 400.

___1. Before Modification________________________2. After Modification____________

___3. After Modification w/ CC1 Filter___________ _4. After Mod. w/HOYA R72_______

Another method of correcting white balance with the modified camera is to use the Custom White Balance feature of the 450D. For a discussion of color blanace issues continue to Page 8:

CONTINUED Next Page - Correcting Color Balance


If you completed the modification and would like to let me know how it went for you, you can contact me at the following email address:

I will add any comments to the modification instructions that might be helpful to others and a link to your site if you wish.

For comments from those that have done the modification CLICK HERE.


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