Konica IIIa

[das]

Does your III have the 10 aperture blades or the 6?

 

[Fred R.]

 

[Fred R.]

View attachment 4826953

Konica 111A

 

[largedrink]

Does your III have the 10 aperture blades or the 6?

Mine looks to have 5 blades

 

[raid]

 

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Oriental Bay late afternoon by Hugh B

Konica IIIA, Hexanon 48mm f2, Expired Fuji Reala 100

 

[MarkWalberg]

Mine looks to have 5 blades

The 5 blade ones generally do have a 6th blade, but look like 5. Two blades go together.
Oh wait. Ignore that. It is the shutter with 6 blades that look like 5. Oops.

 

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The 5 blade ones generally do have a 6th blade, but look like 5. Two blades go together.
Oh wait. Ignore that. It is the shutter with 6 blades that look like 5. Oops.

Interesting, thanks. I had to triple check my aperture blades, it's unusual to have 5.

 

[das]

Konica switched over everything to 6 blades at some point after the IIA. Like most of their rangefinder cameras and SLR lenses. After all, Hex as in Hexanon means "6."

 

[MarkWalberg]

Interesting, thanks. I had to triple check my aperture blades, it's unusual to have 5.

There are four types of Konica III.
The oldest has a Konirapid shutter with ten aperture blades. (The one most tedious to clean)
There are two versions with Seiko shutters, both with 5 blade apertures, the older of these with aperture scale on bottom of focus mount, the newer version with aperture scale on top of the focus mount.
I've never seen one with a six blade aperture.
There is a 4th version with a 48mm f2.4 lens. That one also has no self timer.

 

[das]

Thanks for the info. I had assumed that most IIIs had 6 blades, not 5. Must be Seiko that designed them that way.

 

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Here's a shot wide open:

Coffee by Hugh B

Konica IIIA, Hexanon 48mm f2
1/250th f2
Expired Fuji Reala 100

 

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Here's another using expired Reala 100.

Talking by Hugh B

Konica IIIA, Hexanon 48mm f2
Expired Fuji Reala 100