TG-6 cosistenly overexposus

Started 2 months ago | Discussions thread
Enders Shadow
Enders Shadow Veteran Member • Posts: 3,438
Re: TG-6 cosistenly overexposus
1

smithaa02 wrote:

In the exif logs they refer to it as an ND Filter...so yeah, it could be thought of as that.

Not only can it be "though" as being a ND filter, it is by definition a ND filter. For any focal length, there are only 3 apertures, wide open, a 1-stop decrease using a physical aperture and finally the physical aperture plus a 3-stop ND filter. The TG series has always implemented the lens this way.

The folded optics design of the camera makes it difficult to use a variable iris. So they use a simple fixed 1-stop element. As shutter speed is limited to 1/2000 sec, a smaller aperture must also be offered. This also provides some creative control for those wanting to use a slower shutter speed. A second physical aperture of more than 1-stop isn't practical. At the telephoto end, the aperture is already approaching diffraction limits. So as is common with small sensor cameras, a ND filter is used.

And the Backscatter video is wrong. This aperture implementation is not unique to the TG series. It's actually common with folded optics designs. Take 30 seconds to review the W300 specs.

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Phil

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