how to lock aperture XT-2 camera / XF56 lens

[jbreiden]

I'm trying to take manual shots without any moving mechanical parts. But I can't figure out how to disable and lock the motorized aperture. Any ideas?

 

DESIRED

Locking the aperture to a fixed position, so that I can take multiple shots without the aperture motor moving at all.

 

CURRENT

I put the camera in aperture priority, and select f/8 on the lens aperture ring. The physical aperture sits wide open. I half press the shutter release. The motorized aperture reduces to f/8. Full press takes the shot. Aperture moves back to wide open.

 

CAMERA LENS

Fuji X-T2 camera, Fujinon XF56mmF1.2 R lens. As far as I can tell, this lens has no buttons.

Edited May 9, 2017 by jbreiden

[etomcat]

I do not think that is at all possible. At least not with that lens, if it is not introduced as a feature in the firmware. AFAIK, focus and aperture are "by wire" - electronically controlled. Even if the aperture ring has hard stops. One way perhaps is to use a fully manual lense from another brand with an adapter and set the camera to shoot without lense - e.g. Nikon AF-D 50mm f1.8. It has an aperture ring which is mechanically attached and controls the aperture.

[poster]

Try this:

Set your camera to manual exposure i.e. select your aperture AND speed.

Find the "Preview Exposure in Manual" setting in the menu.

Turn the setting to ON

 

Try your scenario, does the aperture change?

Edited May 10, 2017 by Picturer

[jbreiden]

Thanks, Picturer. Unfortunately this did not do the trick.

 

Goal:

No movement of aperture motor before, during, and after photograph. 

 

What I tried:

1. Set camera to autofocus (Focus mode selector: S)

2. Set aperture to f/16 on the lens ring

3. Set shutter speed dial to 1/60

4. SET UP > SCREEN SETUP > PREVIEW EXP./WV IN MANUAL MODE = PREVIEW EXP./WB

 

What happened:

1. Aperture starts closed at f/16

2. Half press: aperture goes full open, then part open (f/4?),  focus beep, then back to f/16

3. Full press: shot is taken, no more movement of aperture

 

What I tried #2:

1. Set camera to manual focus (Focus mode selector: M)

2. Set aperture to f/16 on the lens ring

3. Set shutter speed dial to 1/60

4. SET UP > SCREEN SETUP > PREVIEW EXP./WV IN MANUAL MODE = PREVIEW EXP./WB

 

What happened:

1. Aperture starts wide open

2. Half press: aperture closes to f/16

3. Full press: shot is taken

4. Remove hand from button: aperture opens wide

[Arthur]

To jbreiden: yeap, kinda scisophrenic... but it runs in the family...

[poster]

Thanks, Picturer. Unfortunately this did not do the trick.

 

Goal:

No movement of aperture motor before, during, and after photograph.

 

What I tried:

1. Set camera to autofocus (Focus mode selector: S)

2. Set aperture to f/16 on the lens ring

3. Set shutter speed dial to 1/60

4. SET UP > SCREEN SETUP > PREVIEW EXP./WV IN MANUAL MODE = PREVIEW EXP./WB

 

What happened:

1. Aperture starts closed at f/16

2. Half press: aperture goes full open, then part open (f/4?), focus beep, then back to f/16

3. Full press: shot is taken, no more movement of aperture

 

What I tried #2:

1. Set camera to manual focus (Focus mode selector: M)

2. Set aperture to f/16 on the lens ring

3. Set shutter speed dial to 1/60

4. SET UP > SCREEN SETUP > PREVIEW EXP./WV IN MANUAL MODE = PREVIEW EXP./WB

 

What happened:

1. Aperture starts wide open

2. Half press: aperture closes to f/16

3. Full press: shot is taken

4. Remove hand from button: aperture opens wide

Try as I said, same as your #1 but this time aquire and lock focus using the AF-L button.

 

I don't have the X2 but this works with my XT10.

 

Select exposure preview in manual =on

Select aperture

Select speed

Aquire and lock focus with the AF-L button

Take shot at the locked focus

Nothing moves

Take next shot at the same locked focus

Nothing moves

Etc etc

Edited May 13, 2017 by Picturer

[jbreiden]

Boy, this is tricky. The following recipe locks the physical aperture exactly as

I hoped.  But I still (!) hear a motor moving somewhere in the lens every time

I take my finger off the shutter button.

 

SET UP > BUTTON DIAL/SETTING > SHUTTER AF = OFF

SET UP > BUTTON DIAL/SETTING > SHUTTER AE = OFF

SET UP > BUTTON DIAL/SETTING > AE/AF LOCK MODE = SWITCH

SHOOTING SETTING > SHUTTER TYPE = ELECTRONIC SHUTTER

Focus mode selector: S

Lens aperture ring: f/11

Shutter speed dial 1/60

Push AF-L

Shoot, Shoot, Shoot

[baranstreet]

I was thinking about selling all my Fuji lenses and sticking with the manual lenses only due to this aperture movement. It makes shooting annoying especially when you zone focus in the street. why would I wait for the aperture blade to close and open. 0.5 seconds can be a miss or a catch sometimes. Fujifilm should find an easier way to solve this.

Anyways, here is the solution I found on x-t2. Latest firmware 4.20;

- All manual mode: None of the Aperture, shutter and Iso is A.

-  Preview exposure in manual mode on.

- This is the weird part: continuous focus. It does not work in single or manual focus. 

Regards,

[yukosteel]

That's the main reason I don't use brilliant XF 35mm F1.4 lens - extra aperture lag is jus so annoying.

The only workaround worked for me for shot sequence - to keep AF button half pressed, so at least I can take quick few shots in a row without "re-aperturing" the lens between each shot.