Is it normal for the Canon 7D to see a yellowish color when you see objects from the viewfinder?

It's safe to say that the machine is fine;

The comparison of the two ** doesn't say anything! In particular, the second one does not see the shooting data. So there is no comparison.

600D does not have a K temperature setting, so it cannot achieve the ideal color [when shooting, you should set the white balance according to the time, environment, and light at that time].

7D can be shot with K temperature setting, adjusting the color in place is not a problem, and it seems that 1600 1 second is a very good speed just after takeoff. [The weather is not too good, and the shooting moment is a little too much].

So, the color of your machine is no problem, and you can try it when there is sunny weather, but it will be very hard, understand, sympathy, hehe.

Note, don't rely on post-production, PS is an auxiliary method that the work is not good and cannot be remade, and the use should be just right.

The yellowish cast is also related to the lens, if the lens has lanthanide glass, the image will be yellowish, which is the yellow seen by the viewfinder and not the yellow with inaccurate white balance.

This yellow cannot be corrected by the camera's automatic white balance, and although it has no effect on image quality, it is not very aesthetically pleasing, and can be corrected manually in post.

It seems that today's DSLR lenses are prone to this problem, your 70-300 I haven't used, my used Nikon 18-135, Sigma 18-35 Such problems are quite serious, and the advantages affect the desire to take pictures.

For white balance issues, you shoot in RAW format and adjust it yourself.

It should be a problem with the lens, the light in the viewfinder is obtained through the lens, or maybe the lens coating is causing the color staining. This problem should be balanced by color temperature adjustment.

I don't think it's a matter of lenses... The color of the viewfinder is originally dark, and it feels like sunglasses. This is normal. But only slightly.

There is also 600D image quality is not much worse than 700D, and it is a little worse than the hardware alone, I only watch the finished film. You can keep up with it by raising the ** slightly.

I played my friend's 600d, and he used it very little, it was still **one, and now he only sells 2835 for the head of 18-55. This machine is a good deal, so.

There are problems with the lens and viewfinders, and the viewfinder of low-end SLR products like the 600D will not be as bright as imagined.

It's normal for the eyepiece to have chromatic aberration, anyway, the eyepiece just looks at the composition, the color doesn't matter, many SLR eyepieces have more or less chromatic aberration.

The eyepiece itself is not a completely colorless mirror, and it is normal for the eyepiece to look a little dark.

Try using the same lens and a different camera, or use this camera for a different head.

If it is a room shadow light sourceForcing the color temperature to 5500K can solve the problem.

What lens is used? Didn't use any filters?

No problem, it's normal for the viewfinder to have chromatic aberration, the light passes through the optical lens, and the color will always be a little off, as long as the film has no effect, what does it matter?

If the camera is currently set to single-point autofocus, there is nothing wrong with the camera, it is a problem with the settings.

button, gaze into the viewfinder, use the up, down, left, right buttons or dial to manually select the AF point, automatically select the AF point when all AF points in the viewfinder are on, press the SET button to switch between **AF point and auto select AF point. If you are satisfied with my answer, please adopt it in time, and if you are not satisfied, please ask.