While I'm waiting for my F4 to arrive, thought I'd clear up a question: I've read that "the F4 won't communicate the aperture set on a manual lens to a speedlight, so this has to be done manually." Just what does that mean? Makes it sound like a limitation. I have mostly AI-S lenses, and am accustomed to aperture priority TTL on my FM3a w/SB-22. Don't anticipate any limitations with the SB-29s, since most of my macro work is done with a Sigma 105/2.8 EX which presumably does talk to the F4.
Thanks, and I'm looking forward to spending time in this forum!
It is true that the F4 (and any other Nikon body for that matter) will not communicate the aperture set on a manual focus lens (AI-P being the exception) to a Nikon speedlight.
I am no Nikon flash "expert", but as far as I know this is really only a "limitation" in a couple of cases:
1) You want to check the flash range via the "bar graph" on the flash LCD panel (where applicable). In this case you will need to manually enter the lens aperture you have set.
2) You are using "A" mode autoflash. Since the flash output is controlled by the sensor on the front of the flash, it needs to know the aperture you have set on the lens, and you will need to enter your lens aperture manually.
In all other cases (straight-TTL, daylight balanced TTL fill flash, M mode) a Nikon flash does not need to know or care what you have set on the lens aperture ring. Since most of us probably use TTL flash, using manual focus lenses does not really differ much from using AF lenses, in that you DO NOT need to enter the lens aperture into the flash display to take properly exposed flash photos.
TTL aperture priority flash photography with your SB-22/F4 will be as seamless and as easy as it is with your FM-3A.
Enjoy your new F4. Mike
Mike FA Nova Scotia FORMER Nikonian - It's been fun ... see ya ... I'm outta here!
Mike is correct. Any time you are using TTL flash the flash does not need to know the aperture since the camera is just reading the flash burst as it accumulates on the film. Nor does the flash need to know the ISO of the film when in TTL mode. All this applies to the Sigma/SB29s combo as well.
For what it's worth, my F80 & D lens combo in aperture priority won't communicate the aperture value to my SB80 when in 'A' auto mode either. You still have to set the working aperture on the flash when in A mode.
That's because the F4 doesn't support 3D Matrix metering, flash or non-flash. The F4 supports Matrix Balanced flash metering, where that the flash will balance the light between the background and the foreground subject, but it's not anything as complex or elaborate as the metering on the more modern bodies.
I'm using an F4 with the SB-28 Speedlight. This flash unit has a zoom head. It works great with my AF lenses and my old 50mm f1.4 AI.
With the AF lenses (or lenses with CPU contacts) the flash sets ISO, zoom setting and aperture automatically by reading the information from the camera. You set the flash to TTL Matrix Balanced Fill-Flash. This works with ANY exposure mode though I usually use Aperture Priority to give more control. You can use this to get TTL matrix or center-weighted metering. With Aperture Priority mode, set the desired aperture on the lens and the flash changes automatically.
With the AI lens (same with AI-S) the flash sets the ISO automatically. I have to manually change the zoom setting to match my lens and manually input the aperture I want to use depending on my shooting distance/depth of field requirements. I set the camera to Aperture Priority mode and match the aperture on the lens to the setting on the flash (leave shutter speed dial on X). With this you still get TTL matrix or center-weighted metering. If you change the aperture on the lens you have to manually change it on the flash unit.
You can also use spot metering with both lens types if you set the flash to Standard TTL.