Issues with photos, not sure if it's the camera or the lens

[Didereaux]

No one has asked what ISO you are using for these shots? All of the comments are legit, but the ISO really needs tot be known.

No one asked about the ISO because they actually read the original post, I think.

thank you for pointing that out. I missed it. Did it require your snark? welcome to the ignore function!

 

[sashbar]

What a short tempered gentleman

 

[dennybeall]

Perhaps short-tempered, perhaps not BUT Snark is never appreciated by anyone other than the Snarker. Since I have Snark tendencies I often type out a reply, read it twice and then Delete without posting. But that's just me.

 

[terri]

Holy crap, people! Did Santa leave coal in people's stockings?!?

Let's keep this stuff off the forums, please. There is no reason for any kind of snark, and it's only going to get you in trouble around here. Lighten up!

 

[KmH]

What you are seeing on the edge of the moon photo is called aliasing.
Notice there is less aliasing at the bottom of the moon and 90° away at the camera right edge of the moon.
The aliasing is made more visible because the moon is OOF. The 2x TC on the lens is a major reason the photo is OOF.

When I zoom to 300% on the photo of the dog I can see the boundaries of JPEG compression artifacts known as MCUs - Minimum Coded Units - which are usually 16 x 16 pixel blocks JPEG creates for 4:2:0 chroma subsampeling during compression. Otherwise, I do not see any pixels,.