Re: Tunneling on 5-25 SB
Your image shows a FOV of ~55 mrad as far as I can tell. Published specs are subject to slight variations, and if the specs they are publishing are a little conservative in this respect, good on them.
The last time we went "round and round" on this, you posted the same picture and I told you that
it only serves to cover up the actual effect of tunneling rather than show it. By taking a picture and cropping away the edges, you create the same image you would get at ~7,5x (only with slightly lower resolution, which is lost in web presentation anyway because of the low res of the camera/image).
What you are doing is this:
Cropping away the black "tunnel" part of the image and enlarging the cropped portion relative to what an image of a scope with bigger FOV would look like, completely removing any clues as to what the tunneling looks like.
Now a comparable image without tunneling would look like this:
Side by side:
Doesn't quite match when it comes to perceived magnification, does it?
These images are not comparable due to different cropping and different reproduction scale. This is why I did the original side by side, because that is the best way to really show what is going on, short of having the scopes in front of one's eyes.
Yes, there is more to a scope than tunneling or no tunneling, but this thread is about tunneling, and I thus think it is reasonable to show what tunneling looks like rather than purposefully <span style="font-style: italic">not</span> showing what it looks like.