Pentax LX Interchangeable Viewfinders
The Pentax LX features a complete system of interchangeable viewfinders. The fact that the camera features IDM metering leads to three very desirable consequences:
- The body-viewfinder connections are purely mechanical (except for those viewfinders that have a flash hotshoe).
- No meter recalibration is necessary when switching to a different viewfinder.
- No viewfinder shutter blind is needed.
All viewfinders show the entire viewing screen as well as the information LEDs on the right side.
| Viewfinder | Catalog Number | Magni- fication | Diopter Range | Eyepoint (mm) | Weight (g) | Laterally Correct Image | Visible Aperture | Flash Hotshoe |
|---|---|---|---|---|---|---|---|---|
| FA-1 Eye-Level Finder | 30961 | 0.90 | -1.5 ~ 0 | 15.8 | 95 | yes | yes | yes |
| FA-1W Eye-Level Finder | 30963 | 0.80 ~ 0.88 | -3 ~ +1 | 15 | 95 | yes | yes | yes |
| FA-2 Eye-Level Finder | 30962 | 0.90 | -1.5 ~ 0 | 15.8 | 86 | yes | ||
| FE-1 Magni-Finder | 30965 | 1.35 | -5.0 ~ +4.0 | 20 | 152 | |||
| FF-1 Waist-Level Finder i | 30966 | 1.05 | -1.1 | 15 | 72 |
| Viewfinder Base ii | Catalog Number | Magni- fication | Diopter Range | Eyepoint (mm) | Weight (g) | Laterally Correct Image | Visible Aperture | Flash Hotshoe |
|---|---|---|---|---|---|---|---|---|
| FB-1 System Finder Base | 30964 | — | — | — | 131 | — | — | — |
| Viewfinder Eyepiece iii | Catalog Number | Magni- fication | Diopter Range | Eyepoint (mm) | Weight (g) | Laterally Correct Image | Visible Aperture | Flash Hotshoe |
|---|---|---|---|---|---|---|---|---|
| FC-1 Action Eyepiece iv | 30981 | 0.55 | -0.95 | 60 | 131 | yes | yes | |
| FD-1 Magni-Eyepiece | 30982 | 0.95 | -4.5 ~ +3.5 | 15 | 143 | yes | yes | |
| FD-2 Standard Eyepiece | 30983 | 0.84 | -1.0 | 15 | 43 | yes |
i = When not in use, this viewfinder can be folded up almost completely flat.
ii = The viewfinder base must be used in conjunction with one of the viewfinder eyepieces.
iii = The viewfinder eyepieces must be used in conjunction with the viewfinder base.
iv = This eyepiece can be turned at 180°, thus useful both as a waste-level and eye-level finder.
ii = The viewfinder base must be used in conjunction with one of the viewfinder eyepieces.
iii = The viewfinder eyepieces must be used in conjunction with the viewfinder base.
iv = This eyepiece can be turned at 180°, thus useful both as a waste-level and eye-level finder.