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Showing results 1 to 25 of 1000
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Search: Posts Made By: WJC
Forum: Binoculars Yesterday, 23:25
Replies: 9
Views: 366
Posted By WJC
190320 Hi, Richard: What you seem to be trying...

190320

Hi, Richard:

What you seem to be trying to correct is a collimation error caused by an objective bell/housing being knocked out of alignment on a Zeiss style—two-part body, Porro...
Forum: Binoculars Yesterday, 16:34
Replies: 9
Views: 366
Posted By WJC
"I don't really know the first thing about...

"I don't really know the first thing about collimation or alignments I'm afraid!"

DON'T BE AFRAID! You know EXACTLY as much as virtually all those who today are writing about "conditional alignment"...
Forum: Binoculars Yesterday, 15:40
Replies: 9
Views: 366
Posted By WJC
"I don't really know the first thing about...

"I don't really know the first thing about collimation or alignments I'm afraid!"

DON'T BE AFRAID! You know EXACTLY as much as virtually all those who today are writing about "conditional alignment"...
Forum: Binoculars Tuesday 19th March 2019, 22:56
Replies: 6
Views: 271
Posted By WJC
And that, my friend, is why I said it as I...

And that, my friend, is why I said it as I did.

The following is from a book the name of which I am not allowed to mention:

20 “I NEED TO HAVE MY LENSES PROFESSIONALLY CLEANED.”

As Aristotle, that...
Forum: Binoculars Tuesday 19th March 2019, 18:12
Replies: 9
Views: 366
Posted By WJC
Please consider collimation. If you're going for...

Please consider collimation. If you're going for conditional alignment, the Internet "tips" may suffice. And that may be all you want. If you want clinical collimation, 100% of them ... won't.

Most...
Forum: Binoculars Tuesday 19th March 2019, 16:54
Replies: 6
Views: 271
Posted By WJC
Joachim: I certainly agree one should not use...

Joachim:

I certainly agree one should not use "canned air" IF they are not familiar with the correct—common sense—procedure. For those who know, it can be a godsend.

I know what the urban legend of...
Forum: Binoculars Monday 18th March 2019, 22:33
Replies: 6
Views: 271
Posted By WJC
Send me your real email address and I'll make it...

Send me your real email address and I'll make it happen.

Bill
Forum: Nikon Monday 18th March 2019, 20:22
Replies: 10
Views: 349
Posted By WJC
When I first started getting into binocular...

When I first started getting into binocular astronomy, I would search a huge patch of sky for Andromeda. One becoming experienced in the craft, I had only to throw the instrument to my face ... and...
Forum: Binoculars Monday 18th March 2019, 20:08
Replies: 6
Views: 271
Posted By WJC
When I first started getting into binocular...

When I first started getting into binocular astronomy, I would search a huge patch of sky for Andromeda. On becoming experienced in the craft, I had only to throw the instrument to my face ... and...
Forum: Binoculars Monday 18th March 2019, 17:06
Replies: 4
Views: 351
Posted By WJC
Hi, and welcome: Your question is one that is...

Hi, and welcome:

Your question is one that is asked several times a week on virtually every binocular forum known to man. It is as impossible to answer today as it was decades ago—actually, more so....
Forum: Nikon Thursday 14th March 2019, 23:40
Replies: 24
Views: 603
Posted By WJC
Hi, Andy: Nor have I. Neither the large...

Hi, Andy:

Nor have I. Neither the large discoloration. :cat:

Bill
Forum: Nikon Thursday 14th March 2019, 22:56
Replies: 24
Views: 603
Posted By WJC
The appropriate part of the attached pages will...

The appropriate part of the attached pages will be obvious. If that really is the start of fungus growth, please let us know. I have never seen such. :cat:

Bill
Forum: Binoculars Wednesday 13th March 2019, 19:54
Replies: 18
Views: 688
Posted By WJC
When you get folks to stop that, please take a...

When you get folks to stop that, please take a bow; I've been trying for a VERY long time! :cat:

Bill
Forum: Binoculars Wednesday 13th March 2019, 05:00
Replies: 9
Views: 1,723
Posted By WJC
Hi, Angelo: For what it’s worth, it’s probably...

Hi, Angelo:

For what it’s worth, it’s probably Bk7 or Bak4, which was rarely used in those days—especially on inexpensive binoculars—and not BAK7. Bk7 is a very well-refined crown that has been the...
Forum: Binoculars Monday 11th March 2019, 00:29
Replies: 11
Views: 537
Posted By WJC
Winded, I was sitting in the “pick up” section of...

Winded, I was sitting in the “pick up” section of Wally World when a pretty little worker came scurrying by. As she passed, she said: “You waiting for a pickup?” I told her I was, but that I thought...
Forum: Binoculars Sunday 10th March 2019, 18:26
Replies: 35
Views: 2,159
Posted By WJC
Hi, Ceasar: As many of my friends have PhDs in...

Hi, Ceasar:

As many of my friends have PhDs in optics as without. To most of them, the things we often discuss are way below their day-to-day fare, and binocular collimation leads the pack.

The...
Forum: Binoculars Sunday 10th March 2019, 02:48
Replies: 35
Views: 2,159
Posted By WJC
Que pasa, Patudo: — There would seem to be...

Que pasa, Patudo:

— There would seem to be remarkably little interest in instruments similar to the one you posted here;

I am aware most of the members of BirdForum are a cut above. But I can’t...
Forum: Binoculars Friday 8th March 2019, 20:50
Replies: 31
Views: 1,206
Posted By WJC
“Terms like Blackouts, Glare, Side light...

“Terms like Blackouts, Glare, Side light intrusion, Transition Values, Field flattener and rolling ball effect are doing my head in – so much so that I have ruled everything out.”

ALL those terms...
Forum: Binoculars Thursday 7th March 2019, 05:03
Replies: 35
Views: 2,159
Posted By WJC
Hi, Patudo: We are all products of our...

Hi, Patudo:

We are all products of our environment and experiences. Sometimes those experiences clash with the experiences of others who haven’t had occasion to walk in someone else’s shoes. Neither...
Forum: Binoculars Thursday 7th March 2019, 00:23
Replies: 10
Views: 608
Posted By WJC
The EP magnifies; the glasses correct...

The EP magnifies; the glasses correct astigmatism. Seeing the object more clearly is often perceived as an increase in magnification. :cat:
Forum: Binoculars Tuesday 5th March 2019, 19:46
Replies: 71
Views: 2,559
Posted By WJC
Mathematical brightness does not always equal...

Mathematical brightness does not always equal physiological brightness. Thus, to each his own and at the expense of reopening a stale can of worms, I might mention how so many intelligent people...
Forum: Binoculars Monday 4th March 2019, 22:16
Replies: 35
Views: 2,159
Posted By WJC
Are you saying that the aberrations causing the...

Are you saying that the aberrations causing the image to grow softer at the edge of the field—mainly field curvature—do not exist near the center of the field or that they are largely undetected near...
Forum: Binoculars Saturday 2nd March 2019, 17:49
Replies: 8
Views: 590
Posted By WJC
Hi, my friend: It looks like you are needing a...

Hi, my friend:

It looks like you are needing a simple mathematical answer. Sadly, optics doesn’t work that way. The first thing to recognize is that you must define: “good,” “really good,” AND...
Forum: Binoculars Saturday 2nd March 2019, 04:16
Replies: 72
Views: 2,150
Posted By WJC
Just South of Juno, AK

Thirteen adults and 7 juveniles in just half of the tree. :cat:

Bill
Forum: Binoculars Saturday 2nd March 2019, 00:49
Replies: 35
Views: 2,159
Posted By WJC
They need not re-issue the old Trinovid. Just...

They need not re-issue the old Trinovid. Just produce THAT binocular under a different name. The vast majority of observers won’t know ... or care. The Asians have been producing NEW binoculars out...
Showing results 1 to 25 of 1000
 


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