46 replies to this topic

[Andrea B.]

Here in one location is a collection of transmission charts for the various UV-Pass filters and filter stacks we use.
The Index is at the end of this first post.

Note: Our UVIR Filters Sticky has more links to filter sellers, data and charts.

If you have a chart not shown here, please post it in this thread or in its own topic. Later I will add it to the Index list.

Many charts here have been provided by Uviroptics (Ebay) and UVR Optics (UVR Defense Tech).
Thank you!

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Here is a link to the Schott chart making program. You can enter Hoya data also. Or any data you might happen to have.

Go to Schott's Download Library at this link: http://www.us.schott...load/index.html
There you will see a drop-down menu from which you should select "More Downloads".

You will then see a checkbox list containing the "Optical Filter Glass Calculation Program US".
Check it and a Download button will pop up.

Click the Download button to complete the download of a Zip file containing the program.
The Program is in the form of an Excel spreadsheet, so Excel will be needed to open and use it.

For more on entering Hoya data, see Post #23 below where I have copied some hints from Ebay Uviroptics.

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Here is a link to UV photographer Boon Tang's blog about various UV-pass filters: http://myphotojourne...s-a-comparison/
A nice Rudbeckia is used as a test subject for the stacks.

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INDEX of POSTED TRANSMISSION CHARTS

UV-PASS Filters: already assembled

• AndreaU MK-II
  
• BaaderU (old and new)
  
• LUV U2
  
• LaLa U
  
• StraightEdgeU
  
• Invisible Vision 308
  

HOYA Glass: UV+IR as basis for UV-Pass
^{Made in Japan? Hoya does have divisions in other countries.
See also Stacks below.
Warning: The U-340 in a 1.0mm thickness LEAKS in the 550 range.
THE U-340 (1.0mm) IS NOT RECOMMENDED! Go thicker.}

• U-340 (2.0mm)
  
• U-340 (2.0mm)
  
• U-340 (2.5 mm)
  

• U-360 (1.0mm)
  
• U-360 (2.0mm)
  
• U-360 (2.0mm)
  

SCHOTT Glass: IR-Block
^{Made in Germany.
See also Stacks links below.}

• BG3 (1.5mm)
  
• BG25 (2.0mm)
  

• BG38 (2.0mm)
  
• BG39 (2.0mm)
  
• BG39 (2.0mm)
  
• BG40 (2.0mm)
  

• S8612 (1.0mm)
  
• S8612 (1.75mm)
  
• S8612 (2.0mm)
  
• S8612 (2.0mm)
  

SCHOTT Glass: UV+IR as basis for UV-Pass
^{Made in Germany.
See also Stacks links below.}

• UG1 (1.0mm)
  
• UG1 (1.0mm)
  
• UG1 (2.0mm)
  
• UG1 (2.0mm)
  

• UG11 (1.0mm)
  
• UG11 (1.0mm)
  
• UG11 (1.0mm)
  
• UG11 (2.0mm)
  
• UG11 (2.0mm)
  
• UG11 (2.0mm)
  
• UG11 (2.5mm)
  

ZWB Glass: UV+IR as basis for UV-Pass
^{Made in China by Optima (and others)
Please read warning and notes!! ZWB filters are not currently recommended.}

• ZWB1, ZWB2, ZWB3
  
• Optima ZBW1-1mm, ZBW2-2mm, ZBW3-2mm
  Transmission data and graphs. Obvious visual leaks.
  
• ZBW1-2mm, ZBW3-1.5mm, OBG39 transmission charts.
  

UV/IR-Cut
Baader UV/IR-Cut
Neewer Bk UV IR Cut

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GLASS EQUIVALENTS
These charts correlate the manufacturer's names for various filter glass.
Full charts are available at

• Kopp Glass: Filter Glass Equivalency Guide
  
• Newport Industrial Glass: Filter Glass Cross Reference
  

Some chart excerpts are shown here:

• Blue-Green :: IR-Pass :: IR+Red Pass :: UV-Pass
  

STACKS

• BG3 (1.5mm) + S8612 (1.5mm)
  
• BG3 (2.0mm) + S8612 (1.5mm)
  
• BG3 (2.0mm) + S8612 (2.0mm)
  
• BG3 (1.5mm) + BG39 (2.0mm)
  
• BG3 (2.0mm) + BG39 (2.0mm)
  

• UG1 (1.0mm) + S8612 (1.75mm)
  
• UG1 (2.0mm) + BG38 (2.0mm)
  
• UG1 (2.0mm) + BG39 (2.0mm)
  
• UG1 (2.0mm) + BG40 (2.0mm)
  
• UG1 (2.0mm) + S8612 (1.0mm)
  
• UG1 (2.0mm) + S8612 (1.5mm)
  
• 
  
• UG5 (.75mm)+ S8612 (2.0mm)
  
• UG5 (1.0mm)+ S8612 (2.0mm)
  
• UG5 (1.5mm)+ S8612 (2.0mm)
  
• UG5 (2.0mm) + S8612 (2.0mm)
  

• U-340 (2.0mm) + BG39 (2.0mm)
  
• U-340 (2.0mm) + BG40 (2.0mm)
  
• U-340 (2.0mm) + S8612 (1.0mm)
  
• U-340 (2.0mm) + S8612 (1.5mm) U-340 (2.0mm) + S8612 (1.5mm)
  

COMPARISONS

• BG38, BG39, BG40 and S8612
  
• BG39 and S8612
  
• U-340 with different IR blockers
  
• U-340, U3-60, UG1 and UG11
  
• U-360 and UG1
  
• UG1 with different IR blockers
  
• UG5 in different thicknesses with S8612
  
• UG11 in two thicknesses
  
• UG11 and U-340
  

[Andrea B.]

Schott
BG3 = UV+Violet+Blue+IR

BG3 (1.5mm)

[Andrea B.]

Schott
BG3 = UV+Violet+Blue+IR
S8612 = IR-Block
So, BG3 + S8612 = UV+Violet+Blue

BG3 (1.5mm) + S8612 (1.5mm)
BG3 (2.0mm) + S8612 (1.5mm)
BG3 (2.0mm) + S8612 (2.0mm)

BG3 (1.5mm) + BG39 (2.0mm)
BG3 (2.0mm) + BG39 (2.0mm)

[Andrea B.]

Schott
BG25 = UV+Violet+Blue+IR

BG25 (2mm)

[Andrea B.]

Schott IR-Block
BG38 (2.0mm)
BG39 (2.0mm)
BG40 (2.0mm)
S8612 (1.0mm)
S8612 (2.0mm)

[Andrea B.]

Schott IR-Block
BG39 (2.0mm)
S8612 (2.0mm)

[Andrea B.]

Hoya
U-340 = UV+IR

Schott
BG39, BG40, S8612 = IR-Block

U-340 (2.0mm) + BG39 (2.0mm)
U-340 (2.0mm) + BG40 (2.0mm)
U-340 (2.0mm) + S8612 (1.5mm)
U-340 (2.0mm) + S8612 (1.0mm)

[Andrea B.]

Hoya
U-340 = UV+IR

Schott
S8612 = IR-Block

U-340 (2.0mm) + S8612 (1.5mm)

[Andrea B.]

Hoya
U-360 = UV+IR
U-360 (1.0mm)
U-360 (2.0mm)

Schott
UG1 = UV+IR
UG1 (1.0mm)
UG1 (2.0mm)

[Andrea B.]

Hoya
U-340, U-360 = UV+IR
U-340 (2.0mm)
U-360 (2.0mm)

Schott
UG1, UG11 = UV+IR
UG1 (2.0mm)
UG11 (2.0mm)

[Andrea B.]

Schott
UG1 = UV+IR
BG38, BG39, BG40, S8612 = IR-Block

UG1 (2.0mm) + BG38 (2.0mm)
UG1 (2.0mm) + BG39 (2.0mm)
UG1 (2.0mm) + BG40 (2.0mm)
UG1 (2.0mm) + S8612 (1.0mm)
UG1 (2.0mm) + S8612 (1.5mm)

[Andrea B.]

Schott
UG1 = UV+IR
UG1 (1.0mm)

S8612 = IR-Block
S8612 (1.75mm)

UG1 (1.0mm) + S8612 (1.75mm)

[Andrea B.]

Schott
UG5 = UV+IR
S8612 = IR-Block

UG5 (2.0mm) + S8612 (2.0mm)
UG5 (1.5mm)+ S8612 (2.0mm)
UG5 (1.0mm)+ S8612 (2.0mm)
UG5 (.75mm)+ S8612 (2.0mm)

[Andrea B.]

Schott
UG11 = UV+IR

UG11 (1.0mm)
UG11 (2.0mm)

[colinbm]

That is good to have them all together thanks Andrea.
Col

[kds315]

Why not post a link to the SCHOTT Filter Calculation program, it's free

[nfoto]

Having a program at hand is nice, and I'll scout the Schott site later for my copy. However, compiling all charts into a single location is pretty useful as well.

[Andrea B.]

Yes I have the link and I will post it above later.

[JCDowdy]

I was going to post a link to the Schott spreadsheet myself, but Andrea has done so previously, with instructions.

[Andrea B.]

Here is some information from Ebay Uviroptics about entering Hoya data into the Schott program which is linked in Post #1.
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Hoya data can be entered into the Schott program as I do, however a couple things to keep in mind with Hoya data are these:

1) Hoya data has less resolution, every 10nm for most of the graphs span (Schott data has 1nm resolution for most of the span).

2) Hoya drops the data entirely in sections, such as the U-340 datasheet (just as an example) shows no data at all from 390nm to 660nm, the result of this is that blue-edge and red-edge slopes are not accurate at points diminishing below the last data provided, 390nm (.24) and 660nm (.04) in the case of U-340.

You can see this on a graph when you compare directly to UG11. One could assume that the edge slopes of U-340 are the same as UG11, given all other slopes are the same, other than peak amplitude. Such low transmission data becomes more important on a graph when the thickness is thinner.
Link to Post with the U-340/UG11 chart: http://www.ultraviol...ndpost__p__7827

This is the draw back of Hoya data.Schott data provided in the program has no drop-out of data like the Hoya data sheets.