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Showing results 1 to 25 of 1000
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Search: Posts Made By: WJC
Forum: Binoculars Yesterday, 22:08
Replies: 16
Views: 704
Posted By WJC
Hi eronald, At the factories, at least in Asia,...

Hi eronald,

At the factories, at least in Asia, most use a Fujinon U.B.M.M. collimator (attached). Europeans use those and various other devices of various ages (also attached). And some of those...
Forum: Binoculars Friday 11th October 2019, 23:24
Replies: 16
Views: 704
Posted By WJC
Bill Nye the Science Guy and the Munchkin is me....

Bill Nye the Science Guy and the Munchkin is me. :cat:

Bill
Forum: Leica Friday 11th October 2019, 21:05
Replies: 17
Views: 448
Posted By WJC
De nada! :cat: BC

De nada! :cat:

BC
Forum: Leica Friday 11th October 2019, 17:58
Replies: 17
Views: 448
Posted By WJC
Staring is important because if you can’t/won’t...

Staring is important because if you can’t/won’t do it, you may never get an at-rest focus, which causes you to keep fiddling with the focus and making the same mistake over and over again.

Focus at...
Forum: Binoculars Friday 11th October 2019, 17:08
Replies: 16
Views: 704
Posted By WJC
191011 Okay, Jerry, you have said that you...

191011

Okay, Jerry, you have said that you appreciate my cut-the-crap way of explaining things. So, based on your endorsement, I will add a little seasoning to the subject.

[I will be available...
Forum: Binoculars Thursday 10th October 2019, 17:28
Replies: 16
Views: 704
Posted By WJC
Hi Omid, That WOULD be the goal. However,...

Hi Omid,

That WOULD be the goal. However, “perfect” is a word that should not find its way into discussions concerning optics. In mirror making, a surface that looks pristine and infinitely smooth...
Forum: Leica Thursday 10th October 2019, 00:07
Replies: 17
Views: 448
Posted By WJC
Let's not go there ... it's embarrassing....

Let's not go there ... it's embarrassing. Besides, who are you? I don't recall giving you this number! See what I mean? In high school and college, I had a MENSA IQ. Today, I don't even have a MENS...
Forum: Leica Wednesday 9th October 2019, 23:57
Replies: 17
Views: 448
Posted By WJC
Beatcha ... 68 this July. :cat: BC

Beatcha ... 68 this July. :cat:

BC
Forum: Leica Wednesday 9th October 2019, 22:39
Replies: 17
Views: 448
Posted By WJC
4. DIOPTRIC ACCOMMODATION This is an anomaly of...

4. DIOPTRIC ACCOMMODATION

This is an anomaly of your own physiology, something that affects almost every observer, and is something you control.

Frequently, an observer will focus on a target...
Forum: Others Wednesday 9th October 2019, 15:27
Replies: 8
Views: 880
Posted By WJC
Surveyor and Binastro get the prize. ‘Level and...

Surveyor and Binastro get the prize. ‘Level and inclinometer. (see attached)

BC
Forum: Binoculars Tuesday 8th October 2019, 21:31
Replies: 16
Views: 704
Posted By WJC
191008 Hi Omid, One of the reasons the...

191008

Hi Omid,

One of the reasons the eccentric ring method of collimation is desirable is that the line of sight is shifted laterally.

As for the prism, remember that a light ray exits a...
Forum: Binoculars Tuesday 8th October 2019, 19:16
Replies: 16
Views: 704
Posted By WJC
I have NEVER been opposed to conditional...

I have NEVER been opposed to conditional alignment when it is ADEQUATE to make the instrument serviceable (at the expense of some degree of spatial accommodation) for a single user and when 3-axis...
Forum: Binoculars Tuesday 8th October 2019, 17:43
Replies: 16
Views: 704
Posted By WJC
Hi Peter, He won’t set a pub date until he...

Hi Peter,

He won’t set a pub date until he reviews the whole article. My original proposal was for a piece on the problems related to spatial and dioptric accommodation. The proposal was...
Forum: Binoculars Tuesday 8th October 2019, 17:10
Replies: 16
Views: 704
Posted By WJC
Some things can’t be explained simply; others...

Some things can’t be explained simply; others simply can’t be explained. You will note, I didn’t post this to OpticsTalk. Even so, if you think about it, I’m sure you will understand. If not ... I...
Forum: Binoculars Tuesday 8th October 2019, 01:58
Replies: 16
Views: 704
Posted By WJC
Conditional Alignment

Hi Gang,

There is no way you guys are as geeky as members of Cloudy Nights. However, there are probably a few here who might find the attached of interest. I’m doing an article on Conditional...
Forum: Binoculars Thursday 3rd October 2019, 17:10
Replies: 25
Views: 1,102
Posted By WJC
BINGO!:cat: BC

BINGO!:cat:

BC
Forum: Binoculars Thursday 3rd October 2019, 16:38
Replies: 25
Views: 1,434
Posted By WJC
191003 Hi, Slingworks, Most of those who have...

191003

Hi, Slingworks,

Most of those who have been around BF for a while, know I am not a fan of the myriad tests for this and that as they are subjective and rarely worthwhile over a range of...
Forum: Binoculars Wednesday 2nd October 2019, 17:51
Replies: 25
Views: 1,434
Posted By WJC
Thoughts attached. :cat: Bill

Thoughts attached. :cat:

Bill
Forum: Binoculars Wednesday 2nd October 2019, 15:55
Replies: 25
Views: 1,102
Posted By WJC
Hi Fotbg, A few years ago, I was approached by a...

Hi Fotbg,

A few years ago, I was approached by a representative of a very reputable binocular company and asked to put my name behind a “drawing” illustrating their binoculars had better light...
Forum: Binoculars Friday 27th September 2019, 15:28
Replies: 25
Views: 1,102
Posted By WJC
Lee, The first thing to be said about such...

Lee,

The first thing to be said about such discussions is that I really don’t give a rat’s butt; I just get involved because I know some others do.

The issue can be taken to whole new level by...
Forum: Binoculars Thursday 26th September 2019, 19:55
Replies: 25
Views: 1,102
Posted By WJC
It does not because you are speaking of one...

It does not because you are speaking of one person ... you. The main thing to remember is that—without all the comparisons—you are just trying to please yourself, which is good enough. Every time...
Forum: Binoculars Thursday 26th September 2019, 16:39
Replies: 25
Views: 1,102
Posted By WJC
It is amazing and frustrating to me how people...

It is amazing and frustrating to me how people want to blame everything related to binocular observing ON THE INSTRUMENT, with almost no regard for the different physiology between observers, where a...
Forum: Binoculars Sunday 22nd September 2019, 21:40
Replies: 46
Views: 2,120
Posted By WJC
Your question is just one end of the stick. The...

Your question is just one end of the stick. The other end should read: What’s the use of an extra-wide field binocular WHEN the outer 1/3 to 1/2 of the field is garbage?

It seems that the people who...
Forum: Zeiss Saturday 21st September 2019, 18:49
Replies: 14
Views: 1,159
Posted By WJC
Hi Herman, What “works nicely” for you may not...

Hi Herman,

What “works nicely” for you may not work as nicely for others. My all-inclusive suggestion was derived from cleaning thousands of optics used in Iraq, Afghanistan, the Amazon, the Gulf of...
Forum: Binoculars Saturday 21st September 2019, 17:53
Replies: 31
Views: 881
Posted By WJC
With comments like Low Night Vision, it’s plain...

With comments like Low Night Vision, it’s plain to see the advertisers are clueless. The most light taken in by most eyes in 7mm. The 10x25 will give you 2.5mm or less than half of what you need to...
Showing results 1 to 25 of 1000
 


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