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Search: Posts Made By: Rico70
Forum: Vortex Saturday 1st February 2020, 08:06
Replies: 142
Views: 6,669
Posted By Rico70
I am increasingly perplexed

I want to be bad! (https://youtu.be/dsUXAEzaC3Q) :smoke:


What do you mean? I do not understand you, Jan.
Do you want to support you too "the charlatan law" that with 8x you will see more details...
Forum: Binoculars Saturday 1st February 2020, 06:42
Replies: 109
Views: 4,798
Posted By Rico70
Peter, if you find any inconsistency, you can...

Peter, if you find any inconsistency, you can report it by bringing the consistent data, which I will use to correct the list.


PS:
This formula is not used to calculate casino numbers, nor the...
Forum: Zeiss Saturday 1st February 2020, 06:25
Replies: 22
Views: 1,272
Posted By Rico70
Yes, it could be. Basically I would try to...

Yes, it could be. Basically I would try to replace the 7x42 UV specimen with another specimen, to find what I am looking for. Another specimen could also do much better for me. Otherwise, I would do...
Forum: Binoculars Saturday 1st February 2020, 05:43
Replies: 109
Views: 4,798
Posted By Rico70
I can include some extra columns in the figures,...

I can include some extra columns in the figures, to improve reading. But it will not be possible for me to insert the full explanations, nor all the computer's work, accomplished in 3 years of...
Forum: Binoculars Saturday 1st February 2020, 04:50
Replies: 13
Views: 796
Posted By Rico70
What I think on the matter is that if the...

What I think on the matter is that if the producers were all really honest, yours would be a good idea. But on the contrary, the more general the terminology will be, the greater the tricks put in...
Forum: Minox Thursday 30th January 2020, 10:13
Replies: 11
Views: 877
Posted By Rico70
Minox 7,5x44 IF

Anyone interested or have already tried this new Minox 7,5x44 IF?

https://www.minox.com/en/rapid-with-single-focus/
Forum: Vortex Thursday 30th January 2020, 10:04
Replies: 142
Views: 6,669
Posted By Rico70
From what I read it seems so. Also in my opinion...

From what I read it seems so. Also in my opinion it could be appreciated by birders and nature observers in general.
Keep in mind that 3m for an 18x means virtually bringing the user closer to 17cm...
Forum: Binoculars Thursday 30th January 2020, 08:33
Replies: 13
Views: 796
Posted By Rico70
Probably, the "opening" data was derived from the...

Probably, the "opening" data was derived from the old classic evaluation procedures of the telescopes. And as you know, the aperture of the lens generally corresponds to the nominal value of the...
Forum: Binoculars Wednesday 29th January 2020, 16:13
Replies: 109
Views: 4,798
Posted By Rico70
No Steve, this is not a point. Each binocular has...

No Steve, this is not a point. Each binocular has its own usefulness or uselessness according to each user. For me, any 8x40-42 has no use. But I can understand who uses it and considers it useful or...
Forum: Vortex Wednesday 29th January 2020, 14:59
Replies: 142
Views: 6,669
Posted By Rico70
I also too agree on everything. While I disagree...

I also too agree on everything.

While I disagree on this:

By attending hunters' forums, anyone would notice that in the USA Vortex binoculars are highly appreciated and that many hunters use...
Forum: Binoculars Wednesday 29th January 2020, 13:16
Replies: 109
Views: 4,798
Posted By Rico70
This is another "vision" of my table, which I...

This is another "vision" of my table, which I have adapted to include only 6x-12x binoculars with central focus in the most common formats.
As before, the two images catalog the first 50 "brightest"...
Forum: Binoculars Wednesday 29th January 2020, 12:50
Replies: 109
Views: 4,798
Posted By Rico70
This is the...

This is the formula:

(A^2/M*0,7854)^((T%/100)^2,8) * ((Q/10)^0,25)

A = aperture, M = magnification, T%= transmittance, Q = quality coefficient

This formula takes into account the exact value of...
Forum: Binoculars Tuesday 28th January 2020, 20:26
Replies: 109
Views: 4,798
Posted By Rico70
but it is you who commented exactly the opposite,...

but it is you who commented exactly the opposite, in #82 ... I thought you understood it for yourself.

I don't care what the birder wants, this is the forum of binoculars, therefore of all...
Forum: Zeiss Tuesday 28th January 2020, 20:07
Replies: 22
Views: 1,272
Posted By Rico70
at night I use stars that are on average...

at night I use stars that are on average faint-tenuous and therefore more punctiform (to observe infinitely), while during the day I look for the reflection of the sun on a very convex surface, at...
Forum: Binoculars Tuesday 28th January 2020, 19:35
Replies: 109
Views: 4,798
Posted By Rico70
It seems logical to me! ... which birder is...

It seems logical to me! ... which birder is interested in twilight binoculars?

If you want a Pileatus's list, you will need to list everything you want.
But I don't have all the binoculars in my...
Forum: Binoculars Tuesday 28th January 2020, 15:20
Replies: 109
Views: 4,798
Posted By Rico70
This is a fairly realistic list that catalogs the...

This is a fairly realistic list that catalogs the first 25 most "bright" binoculars (properly, twilight binoculars) among all the others, evaluating them with the "twilight power" (pln) formula, plus...
Forum: Bird Identification Q&A Tuesday 28th January 2020, 14:35
Replies: 34
Views: 1,863
Posted By Rico70
Don't pay attention to my comments. I'm not a...

Don't pay attention to my comments. I'm not a birder or an expert. But...

in my opinion, in shape it resembles a white Little Egrets (black beak and yellow feet) and I see many of these around me...
Forum: Leica Tuesday 28th January 2020, 13:42
Replies: 84
Views: 5,014
Posted By Rico70
And let's not forget the Leica video lenses for...

And let's not forget the Leica video lenses for cinema
https://www.newsshooter.com/2015/11/03/test-video-leica-sl-4k-camera-tested-by-tim-arasheban-and-cinoflex/

http://vimeo.com/26251829
Forum: Others Tuesday 28th January 2020, 13:23
Replies: 3
Views: 342
Posted By Rico70
First, use the guarantee. If the warranty is no...

First, use the guarantee. If the warranty is no longer valid, you can try to dismantle the focus wheel and see if it is repairable.
Forum: Binoculars Tuesday 28th January 2020, 12:58
Replies: 32
Views: 2,336
Posted By Rico70
Hi Bill, I have tested some Opticrons, but...

Hi Bill, I have tested some Opticrons, but personally not 8x32.
If you refer to the "Traveller BGA ED 8x32" model, my formula indicates that there should be no problem, because now I imagine that the...
Forum: Zeiss Tuesday 28th January 2020, 00:28
Replies: 22
Views: 1,272
Posted By Rico70
Hi Tom,I try to answer. There is no exact answer...

Hi Tom,I try to answer.

There is no exact answer here, for various reasons concerning the mechanical and optical functioning of the various binoculars and which also concern the individual eye.
The...
Forum: Leica Monday 27th January 2020, 11:47
Replies: 489
Views: 29,089
Posted By Rico70
The DOF is also caused by the "focal ratio". And...

The DOF is also caused by the "focal ratio". And is possible that the Dialyt (with AK prism) has a greater focal ratio than the Trinovid.
Forum: Binoculars Sunday 26th January 2020, 14:40
Replies: 32
Views: 2,336
Posted By Rico70
It is never useful to evaluate eye relief as an...

It is never useful to evaluate eye relief as an absolute measure, because it is a measure that must always be proportionate to the apparent vision width of the eyepiece.
Therefore, it is possible to...
Forum: Binoculars Sunday 26th January 2020, 01:27
Replies: 32
Views: 2,336
Posted By Rico70
I'm not a fan of Zeiss, especially for many new...

I'm not a fan of Zeiss, especially for many new millennium products. But it is always a displeasure for me to read that a company of that caliber, which still has a high power of inventiveness and...
Forum: Leica Sunday 26th January 2020, 00:50
Replies: 489
Views: 29,089
Posted By Rico70
Hi Dennis, I was referring to the comparison with...

Hi Dennis, I was referring to the comparison with Patudo's Dialyt, but in fact it is not clear for me which model it is (I imagine moderns with AK and T*P*).


DOF is also caused by the "focal ratio"...
Showing results 1 to 25 of 299
 


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