Home Forums Hunting & Shooting Hunting Optics 30 mm vs. 1" tube scopes and exit pupil - Please clear it up

Objective comparisons are not facts...

despite Ringies 'comparisons', exit pupils do rate a thought. one of the downsides of too much magnification is tiny exit pupils.

Yes they do. When folks I've spoken with lack the knowledge of what exit pupil means, I simply tell them, think of a fireman putting out a fire. Would he be better off with a 2 1/2" line or a garden hose.

Machines are objective, but don't always tell us what will happen in the real world. Exit pupil is a mathematical number which truly is worthless. Like one of our .com friends posted, and I paraphrase:

"A brightly lit blob is still a brightly lit blob."

How dare you insert logic into this conversation.

After all, "a brightly lit blob is still a brightly lit blob..." but also "a high resolution picture is useless when the lights are off..."

Aic

After all, "a brightly lit blob is still a brightly lit blob..." but also "a high resolution picture is useless when the lights are off...

That is a fun argument. My experience and that of my son-in-law shows my Bushnell 4200 with a 40MM objective to last as long as my Swarovski z5 when both are on the same magnification setting. I tested them on the eye charts at 127 yards and the deer antlers at 131 yards.

The exit pupil of the z5 on any comparable setting is larger than the 4200 and yet is no better for either of us.

How bad is your eyesight and I don't mean that in a nasty way?

Do you have vision problems?

I guess the question arises since if your pupils never get larger than 2mm then why should the exit pupil?

Do you know the details of your night blindness? Is it a lack of appropriate working receptors in your retina?

In a nasty way or a nice way my glasses corrected vision is 20/15 during the day.



1. I am near sighted. 2. The doctor told me on a night vision scale most folks are at fourteen. If a person sees the same in the night as the day he would be a one. If you are at thirty-six you are totally blind in darkness. He told me,
"Don't be caught out after dark without a flashlight. You are thirty-two on the scale."

The reason I include my son-in-law is because there are some here who try to disparage my comparisons of optics because of the night blindness. I wonder how they think that influences comparisons done during normal day, but they think it because they post it. My son-in-law can see in the night without a flashlight. He is approaching fifty years of age and told me the other day he noticed he can't see quite as well as he used to. I tested him by checking something with a flashlight and then going into the house and requesting him come out and tell me what is over by the big tree about fifty yards out. He got it right. So I guess he can still see O.K.

I hope this answers your question without being argumentative.

How can you evaluate the effectiveness of certain optics in the dark.?

Would not your experiences differ from someone that did not have your condition?

Rich, have you ever had any type of LASIK eye surgery ?