Author Topic: Roof prism vs. porro prism (Read 543 times)

lilabner · « **on:** February 06, 2005, 04:59:58 PM »

Could someone explain how these compare optically? Is the roof prism much better?

TheOpticZone · « **Reply #1 on:** February 07, 2005, 12:49:38 AM »

A porro prism binocular typically will offer better contrast and 3-d imaging compared to the roof prism. One thing that companies are doing is called phase coating. This bring the contrast up to par with the porro. One big advantage to the roof prism is that they are more compact in size, which some people really like for hunting situations when they are carrying them for a long period of time. The main difference that you will notice is the lack of seeing depth, seeing images as 3D, with the roof prism style.

Redhawk1 · « **Reply #2 on:** February 07, 2005, 10:47:51 AM »

Great sites jackfish, thanks...

Naphtali · « **Reply #3 on:** February 14, 2005, 06:35:11 AM »

lilabner:

There have been some excellent forum threads on this topic. They are probably archived. Try doing a key word search on "Porro", "Roof", "binocular comparison", or whatever else appeals to you. I believe your results will be the equivalent of you asking what time it is, and having someone tell you how the watch works.

After wasting thousands of dollars over several decades, I use Zeiss 8x30 B/GA IF Olive with F2 range finder; ocular and eyepiece lens covers; carrying strap; total weight less than 25 ounces.

The problem is seldom quality; it is utility.