Novagrade Digiscoping Adapter for Canon DSLR Cameras

Yes this Adapter is for EOS Mount. So it will work with your 70D.

This Model is for EOS Mount. So you would need the Canon EF-M Lens Adapter Kit for Canon EF / EF-S Lenses to use it on this Model.

There is only (1) aperture setting and that is the aperture of the scope. You have to control the amount of light by increasing or decreasing the shutter speed.(Shutter Priority

Yes. The Novagrade Digiscoping Adapter for Canon DSLR Cameras will adapt the Gavia 85 to the Canon 90D.

It did not work with my Pentax eyepiece, which had a diameter of about 61 mm. So measure your eyepiece outside diameter carefully before you buy. I actually bought an inexpensive eyepiece to use with the converter. But if you expect great quality photos, I think you'll be a bit dissappointed. Manual focus is required using the scope's focus nob, which may take some practice. Also, you lose stops due to th effect of the long telephoto lens effect.

It's the diameter of the eyepiece on the spotting scope that matters. It will work as long as the scope's eyepiece lens diameter is less than the specified diameter that the adapter will take (about 60mm). But do not expect the same quality of photos as you would get on a camera lens, even a poor one. It may have to do with the glass or plastic insert that is built into the Novagrade adapter - it may be reducing the quality of the image. Or it could be that the alignment of the lens on the scope with the camera sensor is not as exact as you would have when using a camera lens that is made to mount to a specific camera. So it depends on your objective as a photographer, that is, to what purpose you are going to use the image created. Also, taking pictures is more complicated in that autofocus won't work, and of course, when using such a long lens as the scope, the amount of light reaching the sensor is significantly reduced, making focussing even tougher. You may need to zoom in on the subject using the camera's lcd to get really accurate focus. Ideally, for daylight photography, you would have a hood over the camera so you could get a really clear view of the image on the camera lcd. You will really need excellent light to photograph birds or any other moving object. I have not tried to use it to photograph still objects under controlled conditions.

It does not behave as a regular camera lense. There is a significant amount of vingnetting. you have to crop quite a bit.

I use EOS REBEL XSi to Leica Televid APO 82 with 25-50X eyepice. Its very easy to use. 4 compressions rings are included. But Leica needs no compressions ring.