Search:

Type: Posts; User: Robert Martellaro; Keyword(s):

Page 1 of 20 1 2 3 4

Search: Search took 0.12 seconds.

  1. Terry, I doubt that any coating will hold up...

    Terry,

    I doubt that any coating will hold up to the abrasive particles that will accumulate on the lenses of a landscaper.

    Good idea on bumping the CT to reduce transmittance. Here's a chart...
  2. https://www.optiboard.com/forums/showthread.php/27...

    https://www.optiboard.com/forums/showthread.php/27631-The-logic-of-flatter-base-curves

    Mostly a problem with low minus through high plus. CC can be distortion, lash crash, reflections when...
  3. Check that the clock is accurate. I doubt that...

    Check that the clock is accurate. I doubt that the lab is physically measuring the lens- isn't this all robotic now at PSV sbaL?

    Double check that the lenses on the recent pair are not warped-...
  4. Replies
    1,239
    Views
    396,448

    Dire Straits - Sultans of Swing 1978 ...

    Dire Straits - Sultans of Swing 1978


    https://www.youtube.com/watch?v=unfDWOAQ0L0
  5. Replies
    4
    Views
    369

    https://www.zeiss.com/vision-care/int/about-us/new...

    https://www.zeiss.com/vision-care/int/about-us/newsroom/news-overview/2019/zeiss-smartlife-fact-sheet.html

    As always, I'm skeptical. Hopefully, they'll give us an override function, if the lens...
  6. Replies
    1,239
    Views
    396,448

    Nina Simone - I Put A Spell On You 1968 ...

    Nina Simone - I Put A Spell On You 1968


    https://www.youtube.com/watch?v=W7mBQhfkqHs
  7. Replies
    8
    Views
    442

    Written a full 20 years before full backside...

    Written a full 20 years before full backside progressives (base curve front surface, progressive optics/multifocal back surface) from Rodenstock/Multigresiv and Zeiss/Individual became available to...
  8. Replies
    8
    Views
    442

    True for segmented multifocals, but not for most...

    True for segmented multifocals, but not for most PALs. Darry's definition is spot on- I don't see how it can be improved on.

    Yup, it's been about 20 years since I've seen a backside Ultex (B?)....
  9. Replies
    8
    Views
    442

    The back side (concave), using the definition...

    The back side (concave), using the definition below.


    https://www.optiboard.com/forums/showthread.php/1959-Base-Curves?p=13572&viewfull=1#post13572

    More useful data from Darryl Meister in that...
  10. Replies
    19
    Views
    8,127

    The Camber blank will have less center thickness...

    The Camber blank will have less center thickness (reduced magnification) and a thinner profile compared to spherical blanks for hyperopic presbyopes, especially when the total power (distance + add)...
  11. Replies
    1,239
    Views
    396,448

    Loudon Wainwright - Red Guitar 2008 ...

    Loudon Wainwright - Red Guitar 2008


    https://www.youtube.com/watch?v=sNdvH92UM6g


    https://www.youtube.com/watch?v=eiKBGViXdwI
  12. Replies
    1,239
    Views
    396,448

    Melanie - Ruby Tuesday 1977 Goodbye 2019,...

    Melanie - Ruby Tuesday 1977

    Goodbye 2019, hello 2020.


    https://www.youtube.com/watch?v=vH8SVGoJzvE
  13. We'll rarely need lenticulation at this age...

    We'll rarely need lenticulation at this age because of the small eye size. Semi-finished Trivex should be considered for the best safety and low chromatic aberration. The -3.00 cyl kicks it out of...
  14. Replies
    1,239
    Views
    396,448

    Fairport Convention - Time Will Show The Wiser...

    Fairport Convention - Time Will Show The Wiser 1968


    https://www.youtube.com/watch?v=vPTI4m6KcJQ
  15. Replies
    1
    Views
    461

    Holiday Impressions

    'Twas the Night Before Christmas

    https://www.optiboard.com/forums/showthread.php/56720-Twas-the-night-before-Christmas

    Follow-up with a twist 2019

    ...
  16. Replies
    1,239
    Views
    396,448

    Jethro Tull - Songs From The Wood 1977 Best...

    Jethro Tull - Songs From The Wood 1977

    Best enjoyed after an Outlander episode.


    https://www.youtube.com/watch?v=wtxhodUlccw
  17. Replies
    1,239
    Views
    396,448

    George Harrison - Devil's Radio 1991 ...

    George Harrison - Devil's Radio 1991


    https://www.youtube.com/watch?v=4dtPHNYz5KI
  18. Replies
    10
    Views
    810

    My last invoice from Eschenbach was for a...

    My last invoice from Eschenbach was for a hand-held 3x mag (made in Germany) no tariff.

    The optional stand is made in China and carried a 9.34% tariff surcharge (section 301).

    I have adjusted...
  19. Replies
    1
    Views
    374

    Properly fabricated (shape, size, thickness,...

    Properly fabricated (shape, size, thickness, etc.), low chemical environment, no high heat, proper cleaning/very good care...four to five years on average for the best coatings.

    Absolutely. Like...
  20. Replies
    1,239
    Views
    396,448

    Like them both. Dig this. ...

    Like them both. Dig this.

    https://www.optiboard.com/forums/showthread.php/40333-Old-Tunes-on-Youtube?p=461363&viewfull=1#post461363

    May be of interest:
    ...
  21. Replies
    1
    Views
    542

    Persol PO2803 ...

    Persol PO2803

    https://glassesradar.com/frank-sheeran-robert-de-niro-glasses-the-irishman

    Bit of an odd product placement considering that De Niro's character was a sociopath.

    ...
  22. Replies
    4
    Views
    774

    Some of these articles are quite technical. ...

    Some of these articles are quite technical.

    https://app.mafo-optics.com/en/profiles/ac6fdce54d5e/editions

    Hope this helps,

    Robert Martellaro
  23. Replies
    1,239
    Views
    396,448

    Crosby, Stills & Nash - Teach Your Children...

    Crosby, Stills & Nash - Teach Your Children 1977-82?


    https://www.youtube.com/watch?v=2vnYKRacKQc

    https://www.azlyrics.com/lyrics/crosbystillsnashyoung/teachyourchildren.html
  24. This may help. ...

    This may help.

    https://www.2020mag.com/ce/design-a-better-visual-experience

    From the above,



    implying that only low levels, probably no more than 1.50∆ of localized prism can be...
  25. Replies
    12
    Views
    1,373

    A 24 hour turnaround from seeing wonderfully, to...

    A 24 hour turnaround from seeing wonderfully, to blur and double vision makes me think of three possibilities:

    1) The eyeglasses have become mispositioned due to some mishap.
    2) An acute...
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4
OptiBoard is proudly sponsored by:
Younger Optics and Vision Equipment