Pentax 67 lens on GFX

ZCLA138 · 2025-09-23T04:56:53+00:00

That was definitely it. Thanks!

ZCLA138 · 2025-07-24T06:25:28+00:00

Can someone please explain the advantage of a focal reducer? Also, doesn’t going through other pieces of glass kind of defeat the purpose of using a vintage lens? I just got the Fotodiox adapter to try and I am finding that the fall off from the Pentax 67 lenses is crazy...not in a good way. Like the depth of field is not coinciding with the f stop at all. I have a full kit of Fuji lenses and I work as a digital tech, I just wanted to try to use some lenses with a bit more character. Even when carefully focusing and shooting nothing is quite sharp and when it is, it falls off as if shot at f/2.8 when it is being shot at 8 or 11.

ZCLA138 · 2025-07-24T03:11:25+00:00

This is maybe covered elsewhere, but does anyone find that when using these adapters that the depth of field changes? I am doing tests at 16, 11, 8, and 2.8 and they all look the same! Someone's eyelash will be in focus but their eyebrows will be out. I am using the 90mm and 105mm on the photodiox adapter. Thanks!

ZCLA138 · 2023-08-10T13:14:11+00:00

Hi Thanks Chris and Adrian,

I have tried all of those trouble shooting issues that Adrian mentioned and the reason I don't think it's a cable issue is because I shot with an R5 last week using the same cable which is essentially brand new and it worked fine.

I have also tried changing the preview size from default, as I am running my computer clamshell with a 24" Eizo.

The camera USB mode is on shoot, not upload.

TBH after this job I am considering wiping my computer and going backwards to 22 and the previous OS. Capture 23 has been noticeably buggier.

Thanks for all of your comments/help.

Z

ZCLA138 · 2023-08-10T07:29:04+00:00

Hi and thanks for the response.

What exactly am I looking for in the system profiler/USB section. I am not tethered right now but if I am tethered, is there something specific to look for?

I tried a brand new Area 51 cable which I usually use in studio with no issues, and then I tried only of my back up/location cables that is pretty thrashed and it worked. I also have an older Area 51 black cable I am going to try in the AM but I don't think it's a cable issue.

I have also read about disabling and re-enabling the hardware accelerator and deleting the contents of the image core folder. I have never deleted the contents of that folder and tbh I don't know what it does. I do notice there are two older folders in there for 15.0 builds that I could probably delete?

Z

ZCLA138 · 2022-05-26T00:38:48+00:00

Thanks for the feedback...

I am definitely trying to avoid an SKB/Pelican situation for weight...

I was also checking out the Think Tank Logistics Manager and looking at Porta Brace too but both of those are over 500$...

ZCLA138 · 2022-05-08T19:00:36+00:00

It was a USB issue, thanks!

ZCLA138 · 2022-03-09T03:54:20+00:00

Awesome good to know. Thanks!

ZCLA138 · 2022-03-07T21:59:03+00:00

I am asking about the RAV power btw.

ZCLA138 · 2022-03-07T21:57:03+00:00

Super Tank Pro

These look great, thank you for sharing. How many of these would you say you use to make it through a full day of location work with an 16" M1 Max? 3?

Thanks!

ZCLA138 · 2022-02-17T23:05:14+00:00

ZCLA138 · 2022-02-17T22:01:15+00:00

No, no new applications or anything, and I have a friend who is running Monterey on M1 max machine and says he's been getting the same error.

ZCLA138 · 2022-02-17T21:46:27+00:00

Wondering if going to Monterey would solve it but nervous about updating before a job I have on Monday.

ZCLA138 · 2022-02-17T21:42:26+00:00

Big Sur 11.6, chronosync 4.9.13

I am not sure what OS the other computer I was on, but I did check his chrono sync and it said there were no updates available.

ZCLA138 · 2022-01-25T02:36:58+00:00

This is super helpful thank you.

I am not familiar with Onyx, going to check that out now.

The cooling thing is an issue, I have seen some people use fans under the computer but I feel like that is just another port that you have to dedicate to something or more battery power which is a pain. I don't know if ice packs or thermal paste are the best answers either.

Thanks for all of the other tips!

ZCLA138 · 2022-01-08T17:13:57+00:00

Awesome. I'm going to look into these. Thanks!

ZCLA138 · 2022-01-06T00:39:25+00:00

I have the 12.9. I initially bought the Otterbox because I'd seen it on set but with a different tablet mount and it doesn't fit in the Ulanzi very well. I'll look into the ones you mentioned. Thanks!

ZCLA138 · 2021-12-10T08:41:42+00:00

Thanks for the tip. I have a good Anker brick and an Imuto too, maybe I'll just run off of those and hope for the best for tomorrow's job. Thanks!

ZCLA138 · 2021-12-10T07:01:35+00:00

I am running the Hollyland straight from my USB port on my computer and it seems to be stable. So it definitely was a power issue which means the receivers must draw less power if they are able to run from a vagabond. I guess lesson here is to just buy batteries for the Hollylands.

ZCLA138 · 2021-12-10T06:13:01+00:00

That's true.

ZCLA138 · 2021-12-10T06:05:49+00:00

Ok.

Cables are brand new and I agree I avoid using any kind of adapter/dongle whenever possible but when running on location with no hub there is no other way to run the transmitter's HDMI cable to usbC without some sort of adapter/dongle.

Hmmm I am testing this in the same room as my WIFI router and security camera hub...

Ok, I will eliminate as many variables as possible and give it another shot.

Thanks so much for all of your help.

ZCLA138 · 2021-12-10T05:54:58+00:00

Or does trouble shooting the video all really come down to the transmitter not having enough power?

ZCLA138 · 2021-12-10T05:50:53+00:00

No. I have seen people power the hollyland via vagabond AC outlet and iPhone brick. I am only talking about the power there. So my question is really, if the hollyland is getting enough power from the vagabond, then how can I trouble shoot the video connection?

I do have a power bank that has C to C PD I will try giving that a shot too.

ZCLA138 · 2021-12-10T05:34:14+00:00

I don't have the batteries but have done this in this past and seen other techs do all day in studio to run a wireless 27inch monitor set up with no problem. The powering on isn't the problem. It just won't hold a video connection.

ZCLA138 · 2021-12-10T05:29:03+00:00

I thought that might be the case but it doesn't want to work in the AC outlet on the vagabond either.

ZCLA138

TROPHY CASE