David Irisarri Vila wrote:
>
> Hi Olympus community,
> I would like to comment some doubts I have according to OM4Ti
> metering system.
> 1. When I take photos in AUTO mode with flash, the camera will use
> OTF light metering in order to cut off flash emission when it´s
> needed; but in MANUAL mode, will the camera use OTF?
No
Then, How can OM3Ti system work with OTF in manual mode (mechanical
shutter)??? How can my OM4Ti meter the flash light comming from the
F280 in manual mode, bacause there is no thyristor sensor?
If you have to work with slow shutter speeds with OM3Ti(with flash),
Olympus brochure says OTF metering will work, giving you a high
precision metering.
> 2. When I use normal OTF flash in AUTO mode, shutter and aperture
> are fixed, then exposure compensation can modify flash power. Now
> I´ll put an example:
> Suppose I want to take a photo with very low ambient light
> and I need to choose a low shutter speed 1/15s, but I also will have
> to put a f5.6 to capture the whole ambient light. The subject is 1.5
> m from the camera and I´ll have to choose f11 to avoid overflashing
> (Using slide film)Could I select -2 exposure compensation, in order
> to reduce flash emission in MANUAL mode (1/15s, f5.6)?, or is not
No, in Manual mode is no OTF flash metering
But Exposure compensation can reduce F280 power? Because I´ve taken
five photographs from one subject with a strong backlit; I used 0
comp, -1, -2, +1, and +2, asd the results were very impressive. You
can see how is reduced f280 emission in -1 and how overflashes in +1.
(I took them in AUTO mode with normal OTF)
> possible to use exp-comp dial in MANUAL mode. It´s something similar
> to GN-distance, you select a wide aperture but you reduce flash
> emission.
exp. comp dial has no connection to the flash.
Then why OM3Ti uses exposure compensation if there isn´t any
aperture priority program??? I´ve readed into a spanish magazine
that exposure compensation in OM3Ti is coupled with F280.
> 3. With daylight, using SuperFP mode in order to take portrait with
> short focal lenght (50mm) with wide apertures is nearly impossible
> to avoid overflashing with slides; would it be possible to use,
> exposure compensation in order to reduce flash emission, like with
> normal OTF in AUTO mode?
like above no connection, choose a larger distance, stop down, don´t
use the 50mm/1.2 but the 100mm/2.0 ;-)
> 4. would it be possible to use a Metz MZ-3 flash with a flash light-
> meter into my OM4Ti and use exposure compensation to correct a
> 1 2/3 stop error displayed with the flash lightmeter?
With the Metz a flash meter is not necessary, you can dial in every
aperture
Metz MZ-3 will work with f2 f4 and f8 apertures, but if you work with
daylight is very difficult to know if you select some GN-value won´t
overflash your picture. Do you think if I use this MZ-3 with OTF
adapter will work properly with daylight???
Thank you very much, for your comments.
Dave
Richard
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