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  1. looksharp65

    3D perception in monocular systems. Really!

    A telescope is an afocal instrument consisting of two focal parts, the objective and the eyepiece. Either can be used to focus the light to their respective focal points. Took my little William Optics SWAN 15 mm and used it as a very strong loupe. Like any magnifier, it can also be used as a...
  2. looksharp65

    3D perception in monocular systems. Really!

    I don't understand why you impute the word 'mysterious' to me. I'd have guessed your optical knowledge was deeper. A real image is invisible, but that does not make it any more mysterious than any other optical concept. It is formed by all the focus points the objective delivers, and these...
  3. looksharp65

    3D perception in monocular systems. Really!

    Yes, a tilt&shift lens can, for example, be used for taking photos straight in front of a mirror while keeping the camera outside of the reflected image. It's certainly possible than you're on the right track. Your use of quotation marks is somewhat disturbing, though. A real image is a...
  4. looksharp65

    If you could have only ONE binocular ? (no list).

    Meostar B1.1 8x32
  5. looksharp65

    3D perception in monocular systems. Really!

    David, there is this parallax inside the width and height of the real image. Moving the head makes the background move if focus is set to the closer distance. I am not certain it's the peripheral parts of the objective lens that are involved, but head movements require an oblique viewing angle...
  6. looksharp65

    3D perception in monocular systems. Really!

    Was a bit unsure whether to put this here or in the Spotting scopes section, but I figured it might create some more buzz here. I was out with my scope yesterday, and remembered an experiment I wanted to revisit. Stage: A line of bigger plants about 50 metres away, flatland in between and...
  7. looksharp65

    Get well card for Lee (Troubador)

    Get well soon, Lee! //L
  8. looksharp65

    Binocular repairers in EU (by country) - A list of suggestions

    Sweden: Välkommen till Instrumenttesto
  9. looksharp65

    EDG 7x42 and Meostar B1.1 8x32 head to head

    That is some good information! Maybe I was misled by Allbino's review of the MHG 10x42 that they found very nearly equal to the EDG 10x42. Seems like I can lean back now and forget about upgrades and swaps. :D //L
  10. looksharp65

    EDG 7x42 and Meostar B1.1 8x32 head to head

    I haven't handled the EDG 8x42, but while I think the EDG is the world's arguably finest 7x42, I'd expect the 8x42 to be the better choice of the two. The 7x42 is a bit fiddly with eye placement and perceived depth of field. Nowhere like my Vortex Fury 6,5x32 which is the fastest target acquirer...
  11. looksharp65

    EDG 7x42 and Meostar B1.1 8x32 head to head

    It is all there in my original post and the second comment. The reason I compare the 7x42 and the 8x32 are that they are the two binoculars in my stable that are suitable for viewing with spectacles. Nowadays I use contacts a lot, and my Nikon E II and its roof counterpart, the Kite Lynx HD...
  12. looksharp65

    EDG 7x42 and Meostar B1.1 8x32 head to head

    Sorry about the confusion. Unfortunately, I can't pinpoint what's the real meaning of "inner detail", an expression I didn't coin. This was mentioned in the original post as 'I don't know what it translates to optically (---) I'm not sure what is going on when I compare the 7x42 to either of my...
  13. looksharp65

    EDG 7x42 and Meostar B1.1 8x32 head to head

    Note: This is certainly not a technical review, it's more my general impressions of sharpness and brightness. Placed myself in the lounge chair this evening to compare a couple of my roofs, as mentioned in the thread title. These are the two I can use with spectacles, the Meostar 12x50 HD goes...
  14. looksharp65

    Meopta Meostar B2?

    I'd love that, but can't prognosticate when it could happen. Working hard on my Big Year (or rather Medium Year) and beside birding, I should also do quite a bit more paddling. It is the original B1 12x50 HD I have, not the B1.1. And I can't see a colour cast difference vs. the B1.1 8x32, but...
  15. looksharp65

    Meopta Meostar B2?

    Very happy with the B1.1 8x32 I bought from you, HR :D But haven't had so many opportunities to put it to work yet. Compared to my old B1, the colour reproduction of the B1.1 is in line with the rest of the collection, however I feel a little sad about the B1. It is out of collimation, but in a...
  16. looksharp65

    Depth of Field - I am confused

    You know, we don't believe what we see. That's not how it works. The opposite is true, though - we see what we believe. But I have a very effective and simple method to challenge both the first group and the second group (those who admit to see what they believe). I have two hands. On each hand...
  17. looksharp65

    Depth of Field - I am confused

    Hi Holger Accommodation can only be positive, which means that only the circles of confusion that are closer to the observer as compared to the main plane of focus may be reduced in size. Of course, if the width of accommodation is wide, as with children and young people, the binocular could be...
  18. looksharp65

    Depth of Field - I am confused

    Simply because vision is inherently a form of perception, and, as such, subjective. In my first post in this thread I showed how visual acuity, a highly individual trait, may affect the perceived DOF in similar ways as the level of magnification does. An afocal instrument like a binocular does...
  19. looksharp65

    Depth of Field - I am confused

    Henry, I agree this is a simple method to again prove the truth that DOF varies with magnification. The method we both dismiss, to visually try to judge fuzziness, is out of the question due to its total lack of reliability and repeatability. But I think it isn't quite correct to call your...
  20. looksharp65

    Depth of Field - I am confused

    Ted and Maljunolo, your comments are excellent. Perceived DOF in an afocal instrument is by definition not possible to measure since it's constantly changing. Using a camera like in digiscoping might, if all settings are correct, in theory, show resolution differences fore and aft the point of...
  21. looksharp65

    Depth of Field - I am confused

    The DOF discussion has not really tempted me, for a number of reasons, maintaining mental sanity being one. With this comment, I will present a few statements that may challenge someone's deeply rooted knowledge or prejudices. I offer them as means to broaden the understanding of the...
  22. looksharp65

    Product Review: The Nikon EII 10 x 35.

    When I first got my 8x30, I didn't have access to the best contact lenses like the ones I use nowadays. So I made a pair of spectacles for the sole purpose of use with the E II. I chose a model in thin titanium, with a fairly wide space between the lenses, I ditched the nosepads and wrung the...
  23. looksharp65

    Eyeglasses - a few unqualified remarks

    Personally? In fact, I have a pair for a very specific use not related to birding. And while I encourage progressive lenses for ordinary users, in particular newbies, I have nothing against letting existing bifocal wearers go on with them. Bifocals should be fine for many binocular users as...
  24. looksharp65

    One 8x3x to rule them all

    Well I wonder about that. I'd guess the scope bodies are the more vulnerable to knocks and such, meaning in the long run there will be excess eyepieces available on the used market. It is not quite like Kowa, where two eyepieces are hugely popular and sought after. And conversely, new or used...
  25. looksharp65

    One 8x3x to rule them all

    This may be the end to the long thread. Luckily, I remained undecided whether to buy the Nikon MHG 8x42 or the Conquest HD 8x32, deep down knowing that all I asked for was a better Meostar 8x32. Prominent member HenRun offered his B1.1 and the rest is history. I'm very happy with it. Colour...
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