Pentax 110 lenses - Picture Thread

[Jonas]

It seems to me as one really need an adapter with an aperture mechanism for the Pentax 110 lenses. I'm pretty sure everything would be better if the lenses are stopped down, perhaps just one stop or so.

 

[pellicle]

Jonas

just did a quick add to what was there ...

its on the blog

 

[pellicle]

I think Hubsand (the 16-9.net world cup referee) uses a Halogen lamp. That's probably as safe as an ordinary and sadly old fashioned bulb.

I know from my misspent youth in electronics that there is intensity change in tungsten bulbs too ... how much I can't say. I dunno how fast or otherwise phosphors really change and how much amplitude change there would be in the intensity cycle.

We are slower in Sweden btw, 50Hz sort of folks.

hmm ... well finland is probably the same ... I'm probably just thinking of Australia

 

[Jonas]

just did a quick add to what was there ...

its on the blog

I visited your blog and had a look. Different characters, no? I don't think the second flare test is to the Pentax lens' disadvantage. That sort of headlight intensive flare usually gets worse when stopping down.

Thank you for adding to the Pentax 110 lens knowledge.

 

[Jonas]

I know from my misspent youth in electronics that there is intensity change in tungsten bulbs too ... how much I can't say. I dunno how fast or otherwise phosphors really change and how much amplitude change there would be in the intensity cycle.

It's probably best to try with the tubes you have at home. Just take a series of images slowly changing the shutter time, use a bench or some other area evenly lit by the tube as target. My findings are that the tubes are the worst lights sources here in my apartment (about 1/15 sec is OK). Ordnary bulbs and halogen bulbs are OK. Energy savers are a mixed lot.

regards,

/Jonas

 

[pellicle]

Jonas

here is the first series

there seems to be less variation between the FD's but I can't really explain why the bottom row show consistently more blue in the tiles and less green.

I stood in the same place to take each image...

I think I need to review this test more carefully

 

[pellicle]

Hi

Different characters, no? I don't think the second flare test is to the Pentax lens' disadvantage. That sort of headlight intensive flare usually gets worse when stopping down.

me in all of them

interesting point about the headlight flare

thanks

 

[petermcwerner]

Just got the 25mm, but still waiting for a lens shade. More will follow when the shade arrives.

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