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Search: Posts Made By: typo
Forum: Zeiss Tuesday 19th June 2018, 13:25
Replies: 20
Views: 840
Posted By typo
I have discussed the DoF issue with Holger, and...

I have discussed the DoF issue with Holger, and we are agreed the effective exit pupil will normally be the diameter of the pupil of the eye in brighter conditions. Having worn varifocal glasses for...
Forum: Zeiss Monday 18th June 2018, 21:19
Replies: 20
Views: 840
Posted By typo
Mpease. Welcome to the forum and thanks for your...

Mpease.

Welcome to the forum and thanks for your telling us about your observations.

I've tried something similar with various binoculars, and in most cased it improves contrast by reducing stray...
Forum: Leica Monday 18th June 2018, 18:06
Replies: 80
Views: 2,880
Posted By typo
I've not see the "brightness washout" you refer...

I've not see the "brightness washout" you refer to in the limited time I've used the various FLs models, so can't really say. There have been other comments on colour too where individuals described...
Forum: Leica Monday 18th June 2018, 08:23
Replies: 80
Views: 2,880
Posted By typo
CJ, One of the intriguing aspects of my browsing...

CJ,

One of the intriguing aspects of my browsing on colour perception is the role of a common amino acid substitution in the L-opsin pigment of the long wavelength (red) receptor. The gene for it is...
Forum: Leica Monday 18th June 2018, 07:30
Replies: 80
Views: 2,880
Posted By typo
Gijs' result is crystal clear. The only question...

Gijs' result is crystal clear. The only question at issue is the perceptual interpretation.

Yes, individuals vary significantly in their spectral sensitivity and colour discrimination. Genetic,...
Forum: Leica Monday 18th June 2018, 06:57
Replies: 80
Views: 2,880
Posted By typo
It's quite possible, or even likely. that Gijs...

It's quite possible, or even likely. that Gijs will have different colour perception skills to you, me, and many others on the forum.
Forum: Meopta Monday 18th June 2018, 06:10
Replies: 2
Views: 256
Posted By typo
Andy, I've mentioned before that I think Meopta...

Andy,

I've mentioned before that I think Meopta have incrementally improved the colour rendition over a number of years. I think they started to roll out the most significant upgrade around 2013 but...
Forum: Leica Monday 18th June 2018, 05:10
Replies: 80
Views: 2,880
Posted By typo
I should point out a couple of things. All the...

I should point out a couple of things. All the transmission data from manufacturers I've seen covers the full visible spectrum from 380nm to 780nm not the partial spectum Gijs records. Even within...
Forum: Binoculars Sunday 17th June 2018, 07:49
Replies: 4
Views: 345
Posted By typo
I have briefly compared the Traveller ED 8x32, ...

I have briefly compared the Traveller ED 8x32, Linx 8x30 and their close family member, the Nikon Monarch 7 8x30. There are some points of difference in their colour, contrast, glare and engineering...
Forum: Opticron Tuesday 5th June 2018, 17:28
Replies: 37
Views: 23,302
Posted By typo
Sounds like it's too late to find out. ;) David

Sounds like it's too late to find out. ;)

David
Forum: Opticron Sunday 3rd June 2018, 18:12
Replies: 37
Views: 23,302
Posted By typo
Pete Gamby told me it was simply a coating...

Pete Gamby told me it was simply a coating upgrage. "You won't spot the difference!"

I've not had a chance yet to put him to the test. ;)

David
Forum: Binoculars Sunday 27th May 2018, 22:10
Replies: 4
Views: 513
Posted By typo
Hello Sam, welcome to the forum. I'm sorry to...

Hello Sam, welcome to the forum.

I'm sorry to hear you have a progressive eye problem. It must be a real concern.

Wearing glasses per se, should be no hindrance to using binoculars, but it is an...
Forum: Zeiss Sunday 20th May 2018, 21:41
Replies: 14
Views: 659
Posted By typo
Yes, in the sense that the matter was discussed...

Yes, in the sense that the matter was discussed during a meeting I had with Zeiss in 2014. Prompted by an exchange of emails they had produced some stopped down MTF analysis which seemed to confirm...
Forum: Meopta Sunday 13th May 2018, 08:50
Replies: 92
Views: 3,996
Posted By typo
CJ, I mentioned back it #18 that I thought...

CJ,

I mentioned back it #18 that I thought Meopta might use enhanced silver coating. Although that was part of my question to Meopta, I'm sure it will remain one of their little secrets. Both phase...
Forum: Binoculars Sunday 13th May 2018, 08:13
Replies: 71
Views: 2,896
Posted By typo
Ed, I think there has been a bit of a mix-up....

Ed,

I think there has been a bit of a mix-up. It's a topic we have discussed before, but I haven't contributed to this particular thread. I think you sent it to the wrong person.

For those who...
Forum: Meopta Friday 11th May 2018, 21:05
Replies: 92
Views: 3,996
Posted By typo
I am very happy to endorse that statement. David

I am very happy to endorse that statement.

David
Forum: Meopta Friday 11th May 2018, 20:51
Replies: 92
Views: 3,996
Posted By typo
I shouldn't need to repeat this, but according to...

I shouldn't need to repeat this, but according to the Meopta product manager Gijs is quite mistaken.

David
Forum: Meopta Friday 11th May 2018, 15:21
Replies: 92
Views: 3,996
Posted By typo
Adhoc, I think it is fair so say that Meopta are...

Adhoc,

I think it is fair so say that Meopta are aware of certain predudices in the public domain and have been reticent about providing specific details about their coatings. I have known this...
Forum: Meopta Friday 11th May 2018, 09:19
Replies: 92
Views: 3,996
Posted By typo
Gijs, I suggest you read posts #38, #40 and #41...

Gijs,

I suggest you read posts #38, #40 and #41 very carefully again.

A Schmidt Pechan prism assembly is composed of a Bauernfeind semi penta prism which I'm informed by the same person at Meopta...
Forum: Meopta Friday 11th May 2018, 06:22
Replies: 92
Views: 3,996
Posted By typo
Apparently. Gijs asked specifically if the roof...

Apparently. Gijs asked specifically if the roof prism was dielectric coated and was told it was. I had previously been told by Meopta that the prism was silver mirrored so I asked for clarification...
Forum: Meopta Thursday 10th May 2018, 14:29
Replies: 92
Views: 3,996
Posted By typo
I was puzzling over why Gijs and myself got...

I was puzzling over why Gijs and myself got seemingly conflicting information from Meopta about the Meostar prisms. I have checked with them again. It seems, at least in part, to be to do with how we...
Forum: Binoculars Wednesday 9th May 2018, 06:50
Replies: 28
Hd
Views: 1,139
Posted By typo
I would agree with others above that in the...

I would agree with others above that in the binocular world HD has no specific meaning at all. However, I've reason to think that at least one oriental OEM uses ED and HD in their offering to...
Forum: Kowa Sunday 6th May 2018, 08:08
Replies: 13
Views: 3,840
Posted By typo
At BirdFair one time I tried to quiz one the Kowa...

At BirdFair one time I tried to quiz one the Kowa representatives about plans for a replacement. There was a bit of a language barrier, but I think I understood that they were well aware of the...
Forum: Zeiss Sunday 6th May 2018, 06:38
Replies: 19
Views: 1,001
Posted By typo
Holger's article might...

Holger's article might help.
http://www.holgermerlitz.de/jenoptem.html

David
Forum: Meopta Saturday 5th May 2018, 13:12
Replies: 92
Views: 3,996
Posted By typo
Adhoc, It's always been necessary to add a...

Adhoc,

It's always been necessary to add a protect a silvered mirror from the atmosphere. Modern sealants will be effective for many decades and probably indefinitely in a sealed nitrogen filled...
Showing results 1 to 25 of 1000
 


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