SLR35mm
intermediateadvanced
Discontinued
Pentax MX
1976-1985
Compact SLR system
Format
35mm
Shutter
1/1000
Max speed
Metering
TTL
Battery req.
Weight
495g
Best For
- Compact SLR system
- Mechanical reliability
- Travel photography
- Those who prioritise portability
Features
- Fully mechanical shutter
- One of the smallest full-frame SLRs ever made
- Interchangeable focusing screens
- Motor drive compatible
- LED meter display
Limitations
- Manual exposure only
- 1/1000s max shutter speed
- No auto-exposure
- Parts increasingly scarce
Common Issues to Check
- Light meter issues
- Shutter timing problems
- Winder coupling wear
- Light seal deterioration
- Mirror foam degradation
Buying Guide
The MX was Pentax's compact mechanical response to the Olympus OM-1. The viewfinder is exceptional with 0.97x magnification. Test the meter LEDs and shutter speeds carefully. The LX (1980) is the professional version with more features but higher prices.
Pricing
Typical Range£150 - £300
Excellent Condition~£400
Compact design commands premium. Clean examples scarce
Prices as of 2025-12. UK market, may vary.
Last verified: Jan 2026Report an error