X-H1 IBIS + Focal Reducer / Speedbooster (&Fast glass): My experience

Started 2 months ago | Discussions thread
SjorsDW
OP SjorsDW Regular Member • Posts: 133
Re: X-H1 IBIS + Focal Reducer / Speedbooster (&Fast glass): My experience

Craig268 wrote:

Good info as I dabble with vintage glass and have that same lens. My Metabones is for Rokkor lenses though. That aside, you should be getting (in theory) about a 1 stop gain. This should be fairly easy to measure by comparing exposure readings using another lens.

The one stop advantage for some reason works perfect between f16 up to f1.8. With a recent rest I got about 1/25 shutter-speed and with the booster I got 1/42 under the same settings (aperture / ISO) and light conditions.

With faster apertures (F1.4 / F1.2) there seems to be a loss of light somehow. there is simply more light decay. Not sure how and how!?

 SjorsDW's gear list:SjorsDW's gear list
Fujifilm X-T1 Fujifilm X-H1 Nikon AF Nikkor 85mm f/1.8D Fujifilm XF 35mm F1.4 R Fujifilm XF 18-55mm F2.8-4 R LM OIS +8 more
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow