OD is an abbreviation for the Latin term oculus dexter which means right eye. Notice that the right eye information is asked for first even though we typically read from left to right.
OS is an abbreviation of the Latin oculus sinister which means left eye. That will be referenced on the far right column of the prescription.
SPH is short for sphere. The sphere of your prescription indicates the power on the lenses that is needed to see clearly. A plus (+) symbol indicates the eyeglass wearer is farsighted. A minus (-) symbol indicates that the eyeglass wearer is nearsighted.
CYL is short for cylinder. The cylinder indicates the lens power necessary to correct astigmatism. If the column has no value (is blank), it indicates that the eyeglass wearer does not have astigmatism. If this is the case on your prescription, you can leave it blank when entering it in.
AXIS is a prescription will include an axis value for those with astigmatism. This number represents the angle of the lens that shouldn't feature a cylinder power to help correct your astigmatism.
ADD is short for "additional correction." This is where details about bifocals, multifocal lenses or progressive lenses would appear.
Album Title: Mahler: Symphony No. 4 Conductor: Michael Tilson Thomas Orchestra: San Francisco Symphony Soloist (Soprano): Laura Claycomb Label: SFS Media (San Francisco Symphony’s in-house label) Release Year: 2003 (Studio Recording) Audio Format: Lossless (CD-Quality / 16-bit 44.1kHz FLAC/WAV)
MTT has a unique lineage. He studied under Ingolf Dahl, who knew Schoenberg, who knew Mahler. But more directly, MTT was a protégé of Leonard Bernstein. However, unlike Bernstein’s schizoid extremes, MTT finds the theatrical truth of the score without distorting the architecture.
Michael Tilson Thomas and the San Francisco Symphony’s 2003 Mahler 4 is a warm, wise, and beautifully played interpretation. In lossless, it reveals itself as a sonic tapestry of rare transparency—capturing both the heavenly smiles and earthly sighs of Mahler’s most serene symphony. An audiophile-friendly triumph.
Rating: ★★★★½ (4.5/5) Recommended Track to Test Lossless: Track 4 – Symphony No. 4 in G major: IV. Sehr behaglich "Das himmlische Leben" (pay attention to the decay of the final harp glissando and the soprano’s breath control).
Recorded live at Davies Symphony Hall in September 2003, this performance of Mahler’s Symphony No. 4 is a centerpiece of the acclaimed San Francisco Symphony (SFS) Media cycle. Conducted by Michael Tilson Thomas (MTT) and featuring soprano Laura Claycomb
, the recording is celebrated for its clarity, warmth, and "Old Europe" interpretive style. 🎼 The Performance Album Title: Mahler: Symphony No
MTT’s approach emphasizes the work's "tuneful and upbeat" nature while maintaining the subtle dark undercurrents typical of Mahler.
Interpretive Style: Features notable portamenti (sliding between notes) in the strings, reminiscent of historic "old world" phrasing.
Third Movement (Adagio): Regarded by many critics as a highlight of the cycle, MTT uses a slow, expansive tempo that remains "radiant and beautiful" without becoming static.
The Finale: Laura Claycomb delivers the vocal finale, "Das himmlische Leben" (The Heavenly Life), with a "boyish simplicity and charm" that captures a child’s vision of heaven. 🔊 Audio Quality & Format
This release was captured using high-resolution Direct Stream Digital (DSD) technology for the SFS Media label. Listening to this recording in lossless format is
Format: Originally released as a Hybrid SACD, it is playable on both standard CD players and SACD machines.
Soundscape: Engineers avoided "spotlighting" soloists, opting for a natural, deep, and rich string sound with a "rock-solid bass".
Lossless Availability: High-quality digital versions and a limited edition 22-LP vinyl set provide audiophile-grade listening.
Experience the 'luminous' sound of the San Francisco Symphony under Michael Tilson Thomas in these highlights: Symphony No. 4 in G Major: IV. Sehr behaglich 4K views · 5 years ago YouTube · San Francisco Symphony - Topic
Listening to this recording in lossless format is essential, as Mahler’s orchestration relies on transparent textures, delicate balances, and sudden dynamic contrasts. who knew Schoenberg
Yes—and here is the nuance. In late 2024, SFS Media quietly reissued the MTT Mahler Cycle as a Remastered Digital Box Set, fixing a minor phase issue present in the original 2003 SACD’s surround sound mix. If you see a file marked "2024 Remaster" or "New Transfer from Original DSD" , you are hearing the definitive version.
Furthermore, the rise of spatial audio (Dolby Atmos) has led to new remixes. However, purists argue the original 2003 stereo lossless remains superior because it preserves the exact microphone placement that engineer Jack Vad (a legend at SFS) designed.
This recording was one of the first major orchestral releases to utilize Direct Stream Digital (DSD) for SACD. Unlike Red Book CDs (44.1kHz/16-bit), the SACD layer offered 2.8224MHz—64 times the resolution of a standard CD.
Given the specificity of the search term, collectors should be aware of piracy. There are many bootlegs claiming to be "lossless" that are upsampled MP3s. To get the authentic 2003 lossless new version:
*Discount applied on the current website price at the time of order. Offer only valid for new customer first contacts order over $10. Maximum discount of $100. Cannot be combined with any other offers. Promotions are subject to change without notice. We reserve the right to cancel orders that are in breach of the terms and conditions of this offer.


| Lens Width | Bridge Width | Temple Length | |
|---|---|---|---|
| XS | < 42 mm | < 16 mm | <=128 mm |
| S | 42 mm - 48 mm | 16 mm - 17 mm | 128 mm - 134 mm |
| M | 49 mm - 52 mm | 18 mm - 19 mm | 135 mm - 141 mm |
| L | >52 mm | >19 mm | >= 141 mm |
Buying eyewear should leave you happy and good-looking. Use our sizing tool to find frames that best fit your unique facial measurements.
Grab a regular card with a magnetic stripe on the back. Student IDs, credit cards and gift cards work well to start our online PD tool.
You may have received our paper PD measurement tool in your recent online order. In order to use this tool, place the ruler on your eyes so that the "0" lines up at the centre in between your eyes. Add up the two numbers, to get your PD. See example below:
Click on this link to download and print your own PD measurement tool.
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