Sensible M42 metered body to use today?
The Spotmatic F has advantages, in that it is one of the 'newer' Spotmatics and it has open aperture metering, when used with the SMC Takumars. All mechanical as well, apart from the meter.
The Spotmatic-F endorsed!
I have two: both great to work with and batteries readily available. Can utilize any M42 lenses (even the oldest, entirely manual or pre-set models, including by other makers) just have to remember to use an appropriate stop-down mode with non-SMC lenses.

All Spotmatics are fully compatible with the 50mm f1.4 lens. It's only the S1a that needs to have the right colour R on the rewind crank.
Cameras earlier than the S1a should not be used with the f1.4 lens.
Thanks, John,
I also have some SP-F Spotmatics (as well as other, earlier models) and recently found one of the Super-Takumar 1.4 lenses at a tempting price. Having read the relevant pages of "The Pentax Way", I became worried about using it in the SP-F, particularly as it seems to protrude further into the mirror box than other Takumar M42 50mm lenses.
Eventually, I just bit the bullet and had a go (crossing my fingers the while) and....no problems!


The instructions regarding the colour of the "R" on the rewind handles are confusing, as various examples seem to have either colour, seemingly unrelated to the model's placement in the manufacturing chronology.

BTW, I use Silver Oxide 1.5v cells and have no complaint with them.

Oso
Just don't forget to put on the lens cover.
The SP-F meter switches off when you place the lens cover on.
The venerable K1000 works the same way...
Chris
Bring back the latent image!
ChrisPlatt
Member
New York
but only using Super-Multi-Coated (or SMC) Takumar lenses.
Stop-down metering must be performed when using other lenses.
Chris
Bring back the latent image!