If the lens is in proper alignment and pointed directly (lineup isn’t critical, you can eyeball it) at the star, the white and black circles remain circular as they blur. But if the lens is decentered or significantly tilted the center blur will ‘flare’ out in one direction or another as you defocus.
Thank you. A very interesting article with great information. Best way for me will be to bring it in for repairs I guess. Just to make sure. Pictures seem to turn out fine, but I can’t get rid of the feel that it looks as if the lens is pointing inwards a bit.
Put a lens onto the camera body.
Place the camera on a flat and level surface,
with the lens pointing downwards.
Place the spirit level on the back of the camera body.
Any deviation? Rotate the spirit level clock-wise.
Check again. Any deviation? Repeat until you have
checked half a circle (180 degrees).
Yeah I could test this. The lens isn’t tipping over when it’s flat on the lens. I’ll try it out before I send it in for repairs! So you’re saying that if the spirit level is level, the lens isn’t off by any means?
Besides soft edges due to inner components being broken? Cause like I said, everything feels fine, lens isn’t making funny noises, camera isn’t, focus works perfect, I can zoom in and out with no friction etc. It just seems from the outside to be a bit off haha
The spirit level will tell you if it is the camera or if it is your imagination.
Also: pay attention to this sentence But if the lens is decentered or significantly tilted the center blur will ‘flare’ out in one direction or another as you defocus (from a post above, focusing on a Siemens Star).
When I have it on the lens, it looks a little bit off. However, moving the spirit just a tiny bit puts it right in the center. We’re talking mm’s here.
The one in which I have the spirit set on the lens, shows that it’s way off.
No, I have no idea how to operate/use it. I’m not a professional photographer. I read the article, I understand what it says but I don’t have the ability to test all that.
Now, relax. it is NOT complicated at all.
Pick the best Siemens Stern from here: siemens stern at DuckDuckGo
Focus according to the instructions given above.
Quote myself:
If the lens is in proper alignment and pointed directly (lineup isn’t critical, you can eyeball it) at the star, the white and black circles remain circular as they blur. But if the lens is decentered or significantly tilted the center blur will ‘flare’ out in one direction or another as you defocus .