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ok, the tape over the contacts also worked on my 135mm LS with both the speed light and studio strobes.

Chris,
FYI, Salpardido was the other guy I mentioned, he said that he was working with somebody from Pentax. HE will let us know via this thread what they find!

Forum: Troubleshooting and Beginner Help 05-22-2015, 05:30 AM

Help with high speed sync with LS lens
Posted By White Dog

Replies: 10
Views: 1,412

Great new Chris!

So what do you think is not working correctly, the camera or the lens? it would be nice to get this working without having to have a work around! if it is the camera, maybe a new firmware revision can remedy the situation or do I need to get the lens repaired?

I will try this later when I get home from work!

thanks and regards,

John

Forum: Troubleshooting and Beginner Help 05-20-2015, 05:19 AM

Help with high speed sync with LS lens
Posted By White Dog

Replies: 10
Views: 1,412

Hi Chris,

Could you elaborate on what you did? were you using the LS lens with continuous lighting and still got only a partial part of the picture exposed?

I got a new speed light with a 2.5mm sync jack to try, although more of the frame was exposed, it still did not work correctly! The sync cable I got is very loose
on the lens and will almost fall of if the lens in inverted! So I got another cable on order and will try it once it arrives.

If I ever get resolution, I will update this post for sure! There is another user here having the same problem and I asked him to be sure to update me if he gets a fix!
I am suspecting the camera body itself! but I don't know how to prove it!

Also , per sterretje suggestion, I forgot to set the new speedlight up as HSS, I will try that as well.

Forum: Troubleshooting and Beginner Help 05-02-2015, 10:08 PM

Help with high speed sync with LS lens
Posted By White Dog

Replies: 10
Views: 1,412

I am not using a speedlite, I don't have one with an external sync jack! I will be buying a Yongnuo HSS that comes with a 2.5mm external sync jack.

I plan on trying a different Flash, and different sync cables.

I am using studio strobes, it's a Novatron 1500vr. with a wired sync cable to the power pack.

Forum: Troubleshooting and Beginner Help 05-02-2015, 09:28 PM

Help with high speed sync with LS lens
Posted By White Dog

Replies: 10
Views: 1,412

Hi,

I got a 645z and the LS 135 lens. I am trying to get the High speed sync working reliably, anything above 1/60th! Unless I am badly mistaken, I tested the lens at all speeds and everything worked, at least once! Unfortunately, the exif information shows "F--" for shutter speed, so I can't go back and see that I wasn't just dreaming about it working at 1/60th, 1/125th, 1/250th, and 1/500th. :( I made sure the camera was set to "single frame shooting". According to the LS135 manual, the 645 automatically sets the cameras focal plane shutter to 1/8th, I switched out of LS mode and set the cameras shutter to 1/8th. I cock the lens, take the shot. 1/60th is rock solid, the whole frame is exposed, for testing purposes, I will re-cock the leaf shutter, change the leat shutter speed to 1/125th, some times, I will get the full frame exposed, other times, the top half of the picture is dark, and now, I never get more then a sliver of exposed region, with the top part being dark! I am suspecting the camera focal plane shutter? or I am missing some set up step, or setting?

Any help with be greatly appreciated!

Forum: Welcomes and Introductions 05-01-2015, 08:57 PM

Hello, Ola, Hola, Hallo , Kamusta, Dzien' dobry, Guten Tag, Ahalan, Nei Ho,
Posted By White Dog

Replies: 2
Views: 869

Howdy Ya'll

I am from Texas! No, I don't have a horse, oil wells, pickup truck, or even cowboys boots but was born and raised here in Texas!

I got several cameras but I just got the Pentax 645z and a whole mess of 645 lenses, more specifically, I got the LS 135mm and was doing some tests in the leaf shutter mode! I am sure that initially it worked at 1/500th shutter speed ( the exif info is blank for the shutter speed!), but I started putzing around with the strobe lights and now I can't get it to work with anything above 1/60th ( 1/125, 1/250 and 1/500 ) which kind of negates the whole reason why I even got the LS lens in the first place! Yes, I am cocking the leaf shutter, and it is in leaf shutter mode. At 1/125th about 2/3 of the frame from the bottom is exposed, at 1/250th it is only about a third, and at 1/500th there is a tiny slice that is exposed.

If anybody can help me out it would be greatly appreciated? Either send me a private message of repond to this thread.

thanks

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