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Search: Posts Made By: Tringa45
Forum: Leica Sunday 17th June 2018, 20:52
Replies: 19
Views: 636
Posted By Tringa45
lI can understand that this is disturbing, but a...

lI can understand that this is disturbing, but a blemish on the objective surface would not make the binocular unusable. It would merely reduce the light throughput somewhat. You can focus on objects...
Forum: Spotting Scopes & tripod/heads Friday 8th June 2018, 12:09
Replies: 3
Views: 155
Posted By Tringa45
Hi Henning, Yes, by "pitch" I meant the...

Hi Henning,

Yes, by "pitch" I meant the centre-to-centre distance (I halved the sum of the inside and outside dimensions).

A 1/4"x20 thread has an outside diameter of 1/4 inch and 20 threads...
Forum: Binoculars Thursday 7th June 2018, 22:30
Replies: 3
Views: 599
Posted By Tringa45
Binastro, I too have an Edmund Optics RKE, but...

Binastro,

I too have an Edmund Optics RKE, but from the other end of the scale, the 28 mm. It offers the largest practical field stop for my spotting scopes (Swaro ATM 65 and Kowa 883) and with only...
Forum: Spotting Scopes & tripod/heads Thursday 7th June 2018, 20:46
Replies: 3
Views: 155
Posted By Tringa45
There is no real standardization of QR plates....

There is no real standardization of QR plates. AFAIK Gitzo have three different types and I don't know if any of these are compatible with Manfrotto QR systems (the same concern incidentally).
The...
Forum: Binoculars Thursday 17th May 2018, 13:05
Replies: 3
Views: 599
Posted By Tringa45
Dielectric and Metal-Coated Mirrors and an Alternative to Phase Coating?

There was a recent discussion and some speculation on the Meopta forum as to the type of mirrors used in the Meostars.

Dielectric mirrors for binoculars with Schmidt-Pechan prisms were introduced...
Forum: Meopta Sunday 13th May 2018, 23:09
Replies: 92
Views: 4,046
Posted By Tringa45
The tarnishing though is silver sulfide caused by...

The tarnishing though is silver sulfide caused by minute quantities of hydrogen sulfide in the environment.
Irrespective of whether there are itermediate dielectric coatings between the prism surface...
Forum: Binoculars Thursday 3rd May 2018, 12:25
Replies: 24
Views: 1,097
Posted By Tringa45
I think that sub 5C temperatures in Oz are...

I think that sub 5C temperatures in Oz are fairly seldom, so I accept that you have no need for them, but the thought that trapping less than 10 ml of clean dry air beneath them could cause some...
Forum: Spotting Scopes & tripod/heads Wednesday 2nd May 2018, 22:20
Replies: 3
Views: 450
Posted By Tringa45
If the pin is locked you will not be able to turn...

If the pin is locked you will not be able to turn the eyepiece anti-clockwise without depressing the button.
Although both scope and eyepiece are waterproof, there is an O-ring at the base of the...
Forum: Binoculars Wednesday 2nd May 2018, 22:06
Replies: 24
Views: 1,097
Posted By Tringa45
Only use them in the winter months. I cover up...

Only use them in the winter months. I cover up the optical surfaces before coming in from the cold to prevent condensation. After this evaporates the optics are sometimes less than pristine.

John
Forum: Spotting Scopes & tripod/heads Wednesday 2nd May 2018, 21:34
Replies: 3
Views: 450
Posted By Tringa45
I assume you first aligned the arrows on the...

I assume you first aligned the arrows on the scope body and the eyepiece before turning clockwise?

John
Forum: Swarovski Wednesday 2nd May 2018, 21:13
Replies: 2
Views: 421
Posted By Tringa45
Perhaps this thread would be better placed on the...

Perhaps this thread would be better placed on the Tripods and Heads forum.

Unfortunately the vast majority of monopods are unsuitable for people of our height (I am 192 cm). I sometimes use bins on...
Forum: Tripod and Heads Monday 23rd April 2018, 21:35
Replies: 20
Views: 787
Posted By Tringa45
Andy, Does the scope foot have a 3/8"-1/4"...

Andy,
Does the scope foot have a 3/8"-1/4" adapter? Make sure this is tight first; a thin coin should do and then hand tightening the QR plate should be sufficient.
Personally, I don't like the...
Forum: Spotting Scopes & tripod/heads Sunday 22nd April 2018, 13:40
Replies: 20
Views: 949
Posted By Tringa45
Ben, There's not a direct relationship between...

Ben,
There's not a direct relationship between the physical length and the focal length of a scope. It all depends on the optical design. Significant differences between the two measurements can be...
Forum: Tripod and Heads Sunday 22nd April 2018, 10:33
Replies: 20
Views: 787
Posted By Tringa45
Lee, Where there's compliance there can be...

Lee,
Where there's compliance there can be oscillation. That's why I junked Manfrotto QR years ago in favour of the Arca-Swiss system. There's a very old test of tripod heads by Jan Meijerink on the...
Forum: Binoculars Sunday 22nd April 2018, 10:11
Replies: 5
Views: 454
Posted By Tringa45
Interesting isn't it, Lee, to see the...

Interesting isn't it, Lee, to see the developments over the past decades?
Initially all scopes and binoculars were focussed by moving the oculars and the next step after your Dialyts was to put...
Forum: Tripod and Heads Saturday 21st April 2018, 23:36
Replies: 20
Views: 787
Posted By Tringa45
Irrespective of the quick release system, the...

Irrespective of the quick release system, the plate should have an anti-rotation pin (4,5 or 5 mm diameter). There will be a corresponding hole in the scope foot adjacent to the 1/4" or 3/8" female...
Forum: Binoculars Thursday 19th April 2018, 20:14
Replies: 5
Views: 454
Posted By Tringa45
The focussing leses can be regarded as part of...

The focussing leses can be regarded as part of the objective. These may be either converging (+ve.) or diverging (-ve.). Examples of binoculars with positive focussing lenses are the Zeiss SF, Meopta...
Forum: Meopta Thursday 19th April 2018, 11:02
Replies: 27
Views: 1,609
Posted By Tringa45
Thanks, Barry. A little surprising that as, all...

Thanks, Barry. A little surprising that as, all other things being equal, I would have expected the A-K prisms of the Zeiss to weigh more than the S-P prisms of the Meopta.
Perhaps the composite body...
Forum: Meopta Tuesday 17th April 2018, 10:04
Replies: 27
Views: 1,609
Posted By Tringa45
Barry, The relatively high weight of the 7x42...

Barry,

The relatively high weight of the 7x42 B1s is not without its positive aspects. Prism size has a significant impact on binocular weight and when manufacturers skimp on the prisms the...
Forum: Meopta Monday 16th April 2018, 19:00
Replies: 27
Views: 1,609
Posted By Tringa45
Barry, My wife's 7x42 B1s came directly from the...

Barry,

My wife's 7x42 B1s came directly from the factory in summer 2016 with serial no. 160xxx. The case is grey and semi-rigid. The first version had a green fabric-covered tight-fitting case with...
Forum: Meopta Friday 13th April 2018, 19:45
Replies: 26
Views: 1,836
Posted By Tringa45
Thanks for the intersting review Lee. Hadn't...

Thanks for the intersting review Lee.
Hadn't realized that the Firecrest is so rare in the UK, but that applies to the Dartford Warbler here.

One aspect of the 7x42 Meostar you forgot to mention is...
Forum: Tripod and Heads Saturday 7th April 2018, 21:59
Replies: 22
Views: 1,485
Posted By Tringa45
Indeed, and don't forget that little 1,5 kg Gitzo...

Indeed, and don't forget that little 1,5 kg Gitzo is still going to need a head.
If JB is taller than about 165 cm he's going to have to extend the centre column and those 16 mm (?) dia. bottom leg...
Forum: Binoculars Friday 6th April 2018, 21:51
Replies: 213
Views: 9,369
Posted By Tringa45
Henry, I think you've hit the nail on the head...

Henry,

I think you've hit the nail on the head there.
In hand-held use the pupils will be displaced laterally when viewing the field edges. Assuming an eye diameter of 24 mm the pupil would be about...
Forum: Tripod and Heads Friday 6th April 2018, 20:37
Replies: 3
Views: 405
Posted By Tringa45
Well Kimmo informed me that the plates for the...

Well Kimmo informed me that the plates for the VH-10 are 49 mm wide, so definitely not Arca-Swiss and it looks as though I got some "alternative facts" from Sirui Europe.
If you don't want to run to...
Forum: Tripod and Heads Tuesday 3rd April 2018, 17:22
Replies: 3
Views: 405
Posted By Tringa45
Sirui Europe is located here in Cologne, so I...

Sirui Europe is located here in Cologne, so I gave them a call today and they confirmed that the VH-10 is Arca-Swiss compatible. I believe Kimmo Absetz has experience with the VH-10 so I have PMed...
Showing results 1 to 25 of 46
 


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