C41
Kodak Portra 400
Kodak Portra 400 is a professional C-41 color negative film known for flexible exposure latitude, natural skin tones, and fine grain.
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The Yashica Penta J (1960) is the original M42-mount SLR from Yashica, predating the simpler "J" model that followed it and anchoring the start of the J-series lineage. It is a fully mechanical, meterless 35mm single-lens reflex using the M42 screwmount standard shared with Asahi Pentax, Exakta (via adapter), and a growing range of Japanese and German manufacturers in the early 1960s. The shutter is a cloth horizontal focal-plane design covering 1 second to 1/500s plus Bulb. No battery is required for any camera function.
Reference
Recommended film stocks for the 35mm format your camera takes.
C41
Kodak Portra 400 is a professional C-41 color negative film known for flexible exposure latitude, natural skin tones, and fine grain.
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Kodak Tri-X 400 is a classic black-and-white film known for strong tonality, visible grain, and documentary character.
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Kodak Gold 200 is a daylight-balanced C-41 color negative film with warm color, moderate grain, and a classic consumer-film look.
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About this camera
Yashica's first M42 screwmount SLR: the 1960 predecessor that launched the J series before the plain "J" took over.
| Field | Value |
|---|
| Format | 35mm |
| Mount | M42 screwmount |
| Introduced | ~1960 |
| Shutter | 1s – 1/500s + B, cloth horizontal focal-plane |
| Flash sync | ~1/25s (X sync) |
| Meter | None |
| Modes | Manual only |
| Battery | None required |
| Mechanical fallback | Full (no electronics) |
Yashica was founded in 1949 as Yashima Seiki Co., initially producing twin-lens reflexes (Yashicaflex, Yashica-Mat line) before expanding into 35mm rangefinders with the Lynx series. The move into 35mm SLRs in 1960 with the Penta J represented a strategic response to the rapid growth of the M42 screwmount market, which Asahi Pentax's Asahiflex and early Pentax models had established as the dominant Japanese SLR standard.
Yashica chose M42 rather than developing a proprietary mount — a deliberate interoperability decision that placed the Penta J and its successors in competition with Pentax, Praktica (East Germany), and later Fujica on the basis of price and body features rather than lens exclusivity. This approach defined Yashica's M42-era strategy through the J series into the mid-1960s.
The Penta J's short production life (approximately 1960-1961) makes it the rarest member of the J lineage. The succeeding plain Yashica J, J-3, J-5, and J-7 each refined the platform while the M42 ecosystem matured. By 1975, Yashica had abandoned M42 entirely in favor of the Contax/Yashica bayonet mount developed jointly with Zeiss.
The Penta J occupies a specific historical position: it is the camera that committed Yashica to the M42 screwmount SLR format. In that narrow sense it is a founding document of a decade-long product strategy that culminated in the TL Electro X and ultimately the pivot to the C/Y mount.
For working film photographers, the Penta J's appeal is identical to that of the Yashica J: full mechanical operation with no electronic dependencies, and native access to a vast M42 lens pool including Takumar, Super-Takumar, Helios, Carl Zeiss Jena, and Meyer-Optik glass. The absence of a meter is an inconvenience rather than a fatal limitation when paired with a handheld meter or Sunny 16 estimation.
The Penta J is scarcer than the later J models on the used market, making clean examples modestly harder to find. It does not command a significant premium relative to its rarity, largely because its functional capability is identical to the more available Yashica J and neither has strong collector speculator demand.
M42 screwmount provides access to one of the widest compatible lens ecosystems in 35mm photography:
No battery is required; all lenses operate fully at preset or manual diaphragm. External selenium meters from the period (Weston Master, Gossen Lunasix predecessors) pair appropriately. M42 extension tubes are widely available for close-focus work.
BW
Ilford HP5 Plus is a flexible ISO 400 black-and-white film with classic grain and strong push-processing tolerance.
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Kodak Ektar 100 is a fine-grain C-41 color negative film with saturated color and high sharpness.
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