A.A.P.C.

TC-1

Automatic Aperture Priority Compensation (A.A.P.C.) was in action here when I took the above picture. I set the aperture at f3.5. It turned out over-exposed with shutter speed at 1/350. TC-1 then compensated the exposure by its shutter aperture. Although TC-1 doesn't have P mode, A.A.P.C. just lets shooting pictures at f3.5 and f5.6 work like P mode. However, no more circular aperture as the shutter aperture is not circular...

The picture looks a bit too dark. It's nomal for a scene like this. However, at f16 that A.A.P.C. is not applicable, the overall exposure is better as shown in the picture below:

TC-1

Theoretically, I think the exposure shouldn't be different. I'm not sure if any difference when metering. But the result seems to show me that using the right aperture is better than replying on A.A.P.C. to save the exposure. Also, with the right aperture, we can have the wonderful circular aperture.

For very quick shots that we can't spare time to change the aperture for bright subject, A.A.P.C. is still very helpful.