[artrasa]

Going through my archives, here's one from 2015. Taken with a Super-Takumar 50/1.4.

[paulh]

DA18-135 on K10D

[glinda]

m 150/3.5


i think it could be a junco

[glinda]

smc 100/4 macro

[GerryM]

rpthomas getting it right with his K10D/18-55

shot with K10D
Sigma 10-20

[Lord Lucan]

.
House near Berkeley, Gloucestershire

The quiet village of Berkeley has punched far above its weight. The university in California derived its name from it (via Bishop Berkeley), the science of vaccination originated here, King Edward II was murdered in the castle (still owned by the Berkeley family), and nearby was the first commercial nuclear power station in the UK. The serial murderer Fred West is rumoured to have buried some of his victims under the floor of the mill, which is a short distance to the right of this photo.

Pentax K10-D, DA 16-45mm F4

[87Duckfan]

.
House near Berkeley, Gloucestershire

The quiet village of Berkeley has punched far above its weight. The university in California derived its name from it (via Bishop Berkeley), the science of vaccination originated here, King Edward II was murdered in the castle (still owned by the Berkeley family), and nearby was the first commercial nuclear power station in the UK. The serial murderer Fred West is rumoured to have buried some of his victims under the floor of the mill, which is a short distance to the right of this photo.

Pentax K10-D, DA 16-45mm F4

Love the history! Thanks for posting...

[brewmaster15]

Spicebush swallowtail Butterfly ( Papilio troilus)




K10D X FA *80-200 2.8

[glinda]

smc 100/4 macro , shot through a clouded-up window.... cold out there today.

[glinda]

I wonder why Pentax decided to create the ‘ green ‘ button , instead of allowing older manual lenses to use their native aperture and meter for it ?
Was it that much more complicated than the green button method ?

Most other cameras allow it .
Maybe it’s more ‘ pure ‘ ?

Just wondering …

[paulh]

instead of allowing older manual lenses to use their native aperture and meter for it ?

Not completely sure, but I think it has something to do with the advent of the KAF mount, and the camera's inability to know what aperture the manual lens is set at. Folks more informed than I will chime in, hopefully.


From Ojai last summer with the DA18-135:

[Dartmoor Dave]

I wonder why Pentax decided to create the ‘ green ‘ button , instead of allowing older manual lenses to use their native aperture and meter for it ?
Was it that much more complicated than the green button method ?

Most other cameras allow it .
Maybe it’s more ‘ pure ‘ ?

Just wondering …

If you look at the back of a K or M series lens, you'll see a lever that opens and closes the diaphragm when you move it. That's the stop down lever that closes the lens down to the shooting aperture when you press the shutter. But if you look again, you'll see another smaller lever inside a semi-circular groove that moves when you move the aperture ring. That's the aperture follower. The aperture follower connects to an aperture feeler lever inside the mount on the camera body, and that adjusts a variable resistor in the camera's meter so that it will give a correct exposure reading for the f stop that you've set to shoot at. But only on film era bodies.

Modern digital bodies haven't got an aperture feeler built into the lens mount, so they can't connect to the aperture follower on the lens. So the only way a digital Pentax can get an accurate meter reading with a fully manual lens is to physically stop down for a moment when you press the green button.

When people talk about wanting a DSLR with a "non crippled" mount, what they mean is a mount with an aperture feeler.

[glinda]

If you look at the back of a K or M series lens, you'll see a lever that opens and closes the diaphragm when you move it. That's the stop down lever that closes the lens down to the shooting aperture when you press the shutter. But if you look again, you'll see another smaller lever inside a semi-circular groove that moves when you move the aperture ring. That's the aperture follower. The aperture follower connects to an aperture feeler lever inside the mount on the camera body, and that adjusts a variable resistor in the camera's meter so that it will give a correct exposure reading for the f stop that you've set to shoot at. But only on film era bodies.

Modern digital bodies haven't got an aperture feeler built into the lens mount, so they can't connect to the aperture follower on the lens. So the only way a digital Pentax can get an accurate meter reading with a fully manual lens is to physically stop down for a moment when you press the green button.

When people talk about wanting a DSLR with a "non crippled" mount, what they mean is a mount with an aperture feeler.

Thank you, dartmoor Dave ,
I will look more closely at the lenses and lens mounts , then ,
For all it’s modern marvel , there is something even more beautiful in the ways they figured out how to physically make things work …

Those tiny parts inside the lenses , for just one example .

Hope to see more of your pictures .

Thanks again .

[paulh]

Seven years ago this week we had a surprise Spring snow back in Texas. From the front porch - DAL50-200 on K10D:

[glinda]

fa 77/1.8

---------- Post added 03-08-22 at 09:15 AM ----------

Seven years ago this week we had a surprise Spring snow back in Texas. From the front porch - DAL50-200 on K10D:

do you miss Texas ?