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FORUMS Other Digital Cameras Fuji Digital Cameras 
Thread started 19 Oct 2017 (Thursday) 18:30
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switching to fuji - wireless flash question/red beam assist

 
AlanU
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Dec 08, 2017 17:56 |  #31

kaitanium wrote in post #18513391 (external link)
Good stuff. Thanks for the comments all.

Yea, i just picked up the godox and a cheap EFx500 to test with my XT2 work cameras. I cant drop cash on lenses for a camera that isnt mine but I figured dropping some cash to test the flash abilities may help with my decision.

Im also not ok with blasting people with a bright LED but i figured since the videographers at weddings do it, i may as well join in just to get the shot.


I must find myself a cheap $615 (incl tax) Fuji EF-X500 flash LOL!!

You can go out and buy yourself a used lens for your "companies" Fuji X-t2. If you don't like the lens you can resell the lens at no loss.

The obnoxious light from the Videographer is a necessary evil in many cases. Red focus assist beam is not irritating and a flash burst is instant. The white beam seems to be a slow method process of aiding in Fuji focus.


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Fuji X-T2 w/battery booster | 16mm f/1.4 | 56 f/1.2 | 10-24 f/4.0 | 50-140 | EF-X500 | TT685
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AlanU
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Dec 08, 2017 17:59 |  #32

Two Hot Shoes wrote in post #18513702 (external link)
Report from the field, I use shooting an event & the Godox X1T and the TT685 where both utilising the AF assist tonight. It made focusing faster, the cameras locked on and the shots were sharp. YMMV.

Hey Kim, have you ever read on Amazon how some people are damaging the hotshoe of the X-t2 with the use of the TT685 pins. Not sure if it's an isolated instance or a very potential issue.

"https://www.amazon.ca​/Godox-Speedlite-Fujifilm-0-1-2-s.../dp/B073VL8TQG
Rating: 3.3 - ‎3 reviews
I have a Fuji X-T2, and this Godox TT685F flash did not slide smoothly into the hot shoe. In fact, after a couple of dozen times mounting and dismounting the flash from my X-T2 hot shoe, I noticed that one of the X-T2 hot shoe connector pins was severely damaged, and the other pins were starting to get damaged."


5Dmkiv |5Dmkiii | 24LmkII | 35mm f/2 IS | 85 mkII L | 100L | 16-35L mkII | 24-70 f/2.8L mkii| 70-200 f/2.8 ISL mkII| 600EX-RT x2 | 580 EX II x2 | Einstein's
Fuji X-T2 w/battery booster | 16mm f/1.4 | 56 f/1.2 | 10-24 f/4.0 | 50-140 | EF-X500 | TT685
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Two ­ Hot ­ Shoes
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Dec 09, 2017 02:39 as a reply to  @ AlanU's post |  #33

I’ve had no issues like that, it slides in smoothly every time. I think you have to remember there is a locking pin that screws down. Don’t know what that poster did though.


Fuji: X-PRO2, X-T1, X-E2 | 16/1.4, 18/2, 23/1.4, 35/1.4, 56/1.2, 90/2, 16-55/2.8, 10-24/4. AD600BM, TT865F, AL-H198, ThinkTank AS2, Peli1514, Ona Bowery, Matthews Grip
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kaitanium
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Post edited 5 months ago by kaitanium. (3 edits in all)
     
Dec 09, 2017 11:41 |  #34

AlanU wrote in post #18513707 (external link)
I must find myself a cheap $615 (incl tax) Fuji EF-X500 flash LOL!!

You can go out and buy yourself a used lens for your "companies" Fuji X-t2. If you don't like the lens you can resell the lens at no loss.

The obnoxious light from the Videographer is a necessary evil in many cases. Red focus assist beam is not irritating and a flash burst is instant. The white beam seems to be a slow method process of aiding in Fuji focus.

Got a great condition EFx500 for $160, good enough for me at least to try things out. Lenses are a larger investment that i probably wont take a gamble on for now.

Two Hot Shoes wrote in post #18513879 (external link)
I’ve had no issues like that, it slides in smoothly every time. I think you have to remember there is a locking pin that screws down. Don’t know what that poster did though.

Yea i saw that review too im guessing they probably had the hotshoe on the flash screwed down and then he/she forced it on the camera.




  
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kaitanium
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Post edited 5 months ago by kaitanium. (6 edits in all)
     
Dec 11, 2017 12:08 |  #35

so im still trying to fully understand the XT2's AF here and I assume all AF for mirrorless cams in general. Looks like it focuses much better when the lens is opened up as much as you can (in this case 50-140 f2.8). Tried it at f22 with the EFx500's AF LED and while the camera thought it had "focused," I got a OOF shot and at f22 seems like focusing is a bit lower in general. But at f2.8 it seems like the AF LED rarely comes on and the camera is able to focus pretty fast and accurately. Are my hunches right?

Upgraded to v3 FM and I definitely still feel the slower AF of the XT2 just focusing in a well lit room right now. Its fast but definitely not as fast as my canons. When i press the AF button it will very quickly hunt back and forth for a millisecond before it focuses. My canons dont have the back and forth at all almost as if it knows where im already going to focus...if this makes sense. But my tests right now are with a 50-140 so that may be why. A friend currently has the kit lens. I assume the kit will be much faster.

Im also concerned about the LED light. Im not sure if im right but it feels like light falloff happens faster than a regular IR beam. If im 10ft away from my subject, an IR beam will still be pretty strong but the LED light seems to be non existent or very weak. Too bad mirrorless cams cant use IR or red light.




  
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Dec 11, 2017 12:52 as a reply to  @ kaitanium's post |  #36

The XF 18-55 'kit' lens will focus not as quickly as the XF 50-140. At F/22 you might be seeing diffraction. The iris should be open when it focuses and only closes to shoot.

The camera can focus down to a value of -3EV but uses contrast detection in the darker light, CD will always hunt as that is how it focuses. Look for a more contrasty point to focus on. Make sure the camera in high performance mode ( located in the Power Management section) and you might want to play with the release/focus priority to find out what works for you. AF works better in single mode with a AF box a little bigger than the smallest.

For an in-depth explanation of the Fuji AF settings on the camera you can look here (external link)


Fuji: X-PRO2, X-T1, X-E2 | 16/1.4, 18/2, 23/1.4, 35/1.4, 56/1.2, 90/2, 16-55/2.8, 10-24/4. AD600BM, TT865F, AL-H198, ThinkTank AS2, Peli1514, Ona Bowery, Matthews Grip
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Post edited 5 months ago by Two Hot Shoes.
     
Dec 11, 2017 12:55 |  #37

kaitanium wrote in post #18515436 (external link)
Im also concerned about the LED light. Im not sure if im right but it feels like light falloff happens faster than a regular IR beam. If im 10ft away from my subject, an IR beam will still be pretty strong but the LED light seems to be non existent or very weak. Too bad mirrorless cams cant use IR or red light.

Yes one white light will fall off very quickly, the red laser light that Canon call IR (it's not as you can clearly see it) will carry a lot further. I was using the Godox version of the IR beam and it worked OK. I still prefer MF in the dark though.


Fuji: X-PRO2, X-T1, X-E2 | 16/1.4, 18/2, 23/1.4, 35/1.4, 56/1.2, 90/2, 16-55/2.8, 10-24/4. AD600BM, TT865F, AL-H198, ThinkTank AS2, Peli1514, Ona Bowery, Matthews Grip
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kaitanium
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Post edited 5 months ago by kaitanium.
     
Dec 11, 2017 13:47 |  #38

Yup got the cam on performance mode. Have it on the 2nd to smallest AF box and I do always look for contrast even in my canons. Do you think the grip will make any difference? I dont really care about burst speed. Some say the grip will affect AF speed also.

Was just trying to see how it does with no contrast. Really the 50-140 will focus faster with all that glass? Amazing. I guess a kit lens will always be kit lens quality.

Is CD+PD a characteristic of only mirrorless cams? I assume these mirroed canons are CD always when not in live view?




  
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Post edited 5 months ago by Two Hot Shoes. (2 edits in all)
     
Dec 11, 2017 15:42 as a reply to  @ kaitanium's post |  #39

Not 100% sure anymore about Canon mirrorless. The 50-140 had a tri-linear motor so the AF elements are held by magnets that allow it to move to focus, three of them. So it will focus very fast. Yes boost mode on the grip will allow the camera to get a boost in AF also.


Fuji: X-PRO2, X-T1, X-E2 | 16/1.4, 18/2, 23/1.4, 35/1.4, 56/1.2, 90/2, 16-55/2.8, 10-24/4. AD600BM, TT865F, AL-H198, ThinkTank AS2, Peli1514, Ona Bowery, Matthews Grip
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Dan ­ Marchant
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Dec 12, 2017 03:10 |  #40

kaitanium wrote in post #18515436 (external link)
so im still trying to fully understand the XT2's AF here and I assume all AF for mirrorless cams in general. Looks like it focuses much better when the lens is opened up as much as you can (in this case 50-140 f2.8).

Seems that it works differently to DSLRs. A DSLR the aperture stays wide open during AF and only closes when you actually take the shot; thus making AF more responsive as it gets lots of light. Just looked into the lens of my X-T2 and sure enough the aperture closes during AF.


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Dec 12, 2017 04:26 as a reply to  @ Dan Marchant's post |  #41

The aperture only closes at the end of the AF routine, one focus is set. It will close down if you enable preview exp/wb in manual mode, but will open to focus and then close again to shoot.


Fuji: X-PRO2, X-T1, X-E2 | 16/1.4, 18/2, 23/1.4, 35/1.4, 56/1.2, 90/2, 16-55/2.8, 10-24/4. AD600BM, TT865F, AL-H198, ThinkTank AS2, Peli1514, Ona Bowery, Matthews Grip
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switching to fuji - wireless flash question/red beam assist
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