This is a quick mini review for those who had mod your Canon EOS APS-C DSLR for Astrophotography or IR photography and feel that the modded Canon EOS APS-C DSLR is quite wasteful since you can't use it for normal photography easily.
I feel the same when I saw my modded Canon 450D in the dry cabinet most of the time and I want to have a backup DSLR if I go Malaysia for photography trip, so I try the custom white balance method on my modded Canon 450D. It's work, but very troublesome as I need to shoot the custome white balance shot once the lighting change. Then I remember that there is a clip-filter for Canon EOS APS-C DSLR that'll bring the white balance back to normal, so I decided to try out the Astronomik OWB (Original White Balance) Clip-Filter.
This Clip-Filter is for modded DSLR which have been converted for Astrophotography or IR use by removing the inbuilt IR-filter or by substituting it with a filter with greater range, so have a white balance that made them not suitable for normal photography. The spectral sensitivity of the DSLR will be changed by the OWB Clip-Filter back to the former range.
Astronomik OWB EOS Clip-Filter
![Image](http://farm8.staticflickr.com/7169/6835969571_9d39d96746_z.jpg)
The OWB EOS Clip-Filter is very easy to install... just put the Clip-Filter above the depression in front of the mirror and press firmly.
Astronomik OWB EOS Clip-Filter install in Canon EOS 450D
![Image](http://farm8.staticflickr.com/7014/6835969723_0671ee06d0_z.jpg)
Below are some of the test shots:
Canon EOS 450D Modded DSLR: Auto White Balance
![Image](http://farm8.staticflickr.com/7152/6835970289_5ccb437c29_b.jpg)
Canon EOS 450D Modded DSLR: Custom White Balance
![Image](http://farm8.staticflickr.com/7159/6835970735_13b3f9f8ac_b.jpg)
Canon EOS 450D Modded DSLR with Astronomik OWB Clip-Filter: Auto White Balance
![Image](http://farm8.staticflickr.com/7157/6835971853_06ae8c6606_b.jpg)
For comparison, below is a shot using my normal 60D DSLR:
Canon EOS 60D DSLR: Auto White Balance
![Image](http://farm8.staticflickr.com/7171/6835971411_ae013929f5_b.jpg)
Advantages
1) Easily switch between normal and modded DSLR.
2) The Clip-Filter will sealed up the internal of the DSLR, so no dust will get to your mirror or sensor when changing lenses.
Disadvantages
1) Viewfinder become dimmer and a bit greenish.
2) Cannot use EF-S lenses as EF-S lenses extend further into the camera.
3) Can only use on Canon EOS APC-S DSLR (Canon 300D and above).
Happy shooting and have a nice day.
Disclaimer: I am not affiliated / associated with any brand names or vendors mentioned here in this quick mini review.