Summary: I've done a lot of comparisons of imaging cameras and this camera performs extremely well if you use it for it's intended purpose. I have a 5D II and a 5D III for terrestrial use. While at a friend's observatory, he showed me images taken of M101 with a 60Da. Knowing that a 5D II is _vastly_ better at high ISO (which maintaining low noise) as compared to a 60D (note... I wrote 60D, not 60Da) I expected my 5D II would blow the doors off his image. Boy was I ever wrong.
Conclusion: From what i have seen it looks to be a good camera. But there is a bad batch of 60D and 60Da cameras out there. I got mine and it worked for 4 hours then i powered it off and that was it. It never powered up again. So untill i get one that works i do not know how good it realy is. They should recall all of the unsold cameras and test them.
Summary: One may want to get a used T2i and have it modified to remove the IR filter... it would be a much less expensive way to go and get better results. This does "OK" for daytime shots but the color and white balance is off some, I can tell the difference. Maybe with an IR filter on the lens would return colors to natural, haven't tried that yet.
Summary: It's not the capabilities of the camera that didn't sit well - it was the confusion in the description(s) about them. When I opened the box there was a little paper on top that said NOT to use this camera for "normal pictures" because of the enhanced red in the sensor would negatively affect them. My goal had been to use this camera for both astrophotography and regular pictures, but this new info was a deal-killer, especially for the price.
Summary: The 60Da is a big jump in astrophotography. I have taken a number of deep space images, and everyone has been super. I have an observatory equipped with a large refractor. The bulb setting and imaging set on RAW are far superior to my other Cannon TSI, especially with the Hydrogen Alpha filter; The only thing I would like to have seen them do was to place the timer on the 3" monitor, instead of placing it on top of the camera window.
Summary: As a budding astrophotographer I was extremely excited to get this camera and take it for a test run. Unfortunately, I wasn't able to do much with it at all. The first night I had a decent run and captured numerous images. However, for some reason, the next evening the camera would not turn on. Thankfully, Amazon not only agreed to replace the item but shipped it next day before I had even returned the first one. For that I was thankful.
Summary: I was using my Nikon D90 - but this camera just blows it our of the water - so to speak. If you love to take pictures of nebulas and deep space objects - this is a great choice. Highly recommended. It arrived in two days and was well packaged.
Summary: OK, I should preface this by saying that I am an astro imager with 20 years of experience and quite a few published images and have extensive experience with real astronomical CCD cameras. I figured I would give this a try as I already have a higher-end Canon DSLR for regular photos and lots of Canon lenses.
Summary: Since I'm already familiar with Canon DSLRs, I was able to get the camera up and running in no time. Taking this to a dark site and using a 20mm prime lens, I was able to get a wonderful, long exposure, night sky panorama in the very first image that I shot. Thanks Canon, for supporting all of us night sky lovers!
Summary: I use the EOS 60Da for both terrestrial and astro photography. I find that the camera works great for both purposes. I have not had an issue with the removal if the ir cutoff filter when using for regular photography. When used for astro photography the all in one solution verses a dedicated specialized astro camera with laptop, and cables makes the whole process much easier and more enjoyable..