Difference between revisions of "Olympus BH Identification"
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In general: | In general: | ||
| − | * Parts are mechanically compatible | + | *Parts are mechanically compatible |
| − | ** I've seen many Frankenstein systems on the surplus market | + | **I've seen many Frankenstein systems on the surplus market |
| − | ** Mixed parts will "mostly work" but give sub-optimal images | + | **Mixed parts will "mostly work" but give sub-optimal images |
| − | * Paint | + | *Paint |
| − | ** BH: silver paint | + | **BH: silver paint |
| − | *** Illuminator, frame | + | ***Illuminator, frame |
| − | ** BH2: white or black paint | + | **BH2: white or black paint |
| − | *** Black paint on low end illuminators (BH2-MA, BH2-RLA) | + | ***Black paint on low end illuminators (BH2-MA, BH2-RLA) |
| − | *** White paint on higher end BH2-ULA | + | ***White paint on higher end BH2-ULA |
| − | *** White paint on observation tube, base | + | ***White paint on observation tube, base |
| − | * Objectives | + | *Objectives |
| − | ** BH: finite | + | **BH: finite |
| − | ** BH2: infinity | + | **BH2: infinity |
| − | *** Sometimes Mitutoyo M Plan Apo are also used (with caveats) | + | ***Sometimes Mitutoyo M Plan Apo are also used (with caveats) |
| − | == Illuminator == | + | ==Illuminator== |
Models: | Models: | ||
| − | * BH-MA | + | *BH-MA |
| − | ** Silver paint | + | **Silver paint |
| − | * BH-RLA | + | *BH-RLA |
| − | ** Silver paint | + | **Silver paint |
| − | * BH2-MA: BF | + | *BH2-MA: BF |
| − | ** Black paint | + | **Black paint |
| − | * BH2-RLA: BF, DF | + | *BH2-RLA: BF, DF |
| − | ** Black paint | + | **Black paint |
| − | ** Vs BH2-MA: has "pull BF" knob | + | **Vs BH2-MA: has "pull BF" knob |
| − | * BH2-UMA | + | *BH2-UMA |
| − | ** White paint | + | **White paint |
| − | ** High end illuminator | + | **High end illuminator |
| − | ** Very distinct looking...you won't confuse it with others | + | **Very distinct looking...you won't confuse it with others |
| − | == Objectives == | + | ==Objectives== |
<br /> | <br /> | ||
| + | <br /> | ||
| + | |||
| + | == Practical information == | ||
| + | Designed to do some correction in objective, some in eyepieces | ||
| + | |||
| + | * Ex: "Olympus NeoSPlan" objective + NFK relay lens | ||
| + | ** Ok | ||
| + | * Ex: "Olympus NeoSPlan" objective + touptek relay lens | ||
| + | ** Aberration | ||
| + | * Ex: "Mitutoyo M Plan Apo" objective + touptek relay lens | ||
| + | ** Ok | ||
| + | * Issue: NFK1.67 very expensive for APS-C camera | ||
| + | ** Proposal: use less expensive NFK or eyepiece to do correction and then touptek relay lens for final sizing | ||
| + | |||
| + | BH and BH2 are mechanically but not optically compatible | ||
| + | |||
| + | * Can use turrets interchangeably | ||
| + | ** Ex: use RMS threaded MSPlan on BH2 using BH's turret | ||
| + | * Mixing illuminators will cause aberrations | ||
Latest revision as of 22:17, 18 June 2022
Page on identifying BH vs BH2
In general:
- Parts are mechanically compatible
- I've seen many Frankenstein systems on the surplus market
- Mixed parts will "mostly work" but give sub-optimal images
- Paint
- BH: silver paint
- Illuminator, frame
- BH2: white or black paint
- Black paint on low end illuminators (BH2-MA, BH2-RLA)
- White paint on higher end BH2-ULA
- White paint on observation tube, base
- BH: silver paint
- Objectives
- BH: finite
- BH2: infinity
- Sometimes Mitutoyo M Plan Apo are also used (with caveats)
Illuminator
Models:
- BH-MA
- Silver paint
- BH-RLA
- Silver paint
- BH2-MA: BF
- Black paint
- BH2-RLA: BF, DF
- Black paint
- Vs BH2-MA: has "pull BF" knob
- BH2-UMA
- White paint
- High end illuminator
- Very distinct looking...you won't confuse it with others
Objectives
Practical information
Designed to do some correction in objective, some in eyepieces
- Ex: "Olympus NeoSPlan" objective + NFK relay lens
- Ok
- Ex: "Olympus NeoSPlan" objective + touptek relay lens
- Aberration
- Ex: "Mitutoyo M Plan Apo" objective + touptek relay lens
- Ok
- Issue: NFK1.67 very expensive for APS-C camera
- Proposal: use less expensive NFK or eyepiece to do correction and then touptek relay lens for final sizing
BH and BH2 are mechanically but not optically compatible
- Can use turrets interchangeably
- Ex: use RMS threaded MSPlan on BH2 using BH's turret
- Mixing illuminators will cause aberrations
