Difference between revisions of "Olympus BH Identification"
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| − | Illuminator | + | 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 | ||
| + | *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== | ||
| + | <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
