Re: IOR Reticle Visible @ what magnification ,FFP
ronas,
the reticle in the 3-18x42mm when I designed it is to be used at all mag ranges. I have used the scope in question at 3x to do holds out to 600yds many times.
As a matter of fact, mine stay between 5x - 8x 90% of the time due to the FOV and reticle size.
as a note, the reticle does not get smaller per-say at lower mag
What happens is this, the reticle in all FFP optics sub-tend a unit of measure. The appearance if the reticle is directly related to the FOV. If you think of it this way:
A mil # 100yds is 3.6" So if the FOV is 27ft, the reticle looks bigger than if the FOV was 50ft. Due to 1 mil is covering 3.6"
So this is how a FFP optic works and keeps its size the same no matter the FOV adjustment, as you adjust the mag level of the optic.
On the other hand, a SFP scope, as you adjust up and down the mag levels, the reticle does not adjust to stay the same unit of measure. So the reticle looks to you and other shooters to not move, when it reality it is, and is getting out of whack for a lack of words.
John