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Phase XF with IQ3 100 tips request

Medium Format Systems and Digital Backs - The GetDPI Photography Forums - www.getdpi.com
Good morning.

My XF/3-100 has arrived and I'm cracking on with using it both as a kit and with the back separately on an Alpa STC.

Having only last month taken delivery of my X1D, it's an exciting and interesting time. However, the Phase kit, purely as a result of its exceptionally deep and rich feature set, is the closest to overwhelming that I've ever come across. I've owned and used quite a lot of MFD gear so I know the territory but wow, is there a lot to learn.

My 'known unknowns' mainly relate to ISO and DR. With the IQ180 you really had to shoot at ISO 35 to get the best from the back. With the the 3-100 I have started similarly by shooting at 50 but I'd really appreciate input from those with experience of the system as to whether this is really necessary? For example, well before dusk yesterday I was shooting the back on the STC and using the full electronic shutter. I kept on running into shutter speeds that required a dark frame which means you have to put on the lens cap.

This felt fiddly, and I thought I would generally revert to the leaf shutter on my Rodie in future. However, were I to bump up ISO to 100 or even, gasp, 200, how much DR would I lose?

In other words I have no idea what the base ISO of the sensor is. Is 50 truly base or is it a pull? Is the sensor ISO invariant? Do I lose DR as I move to low-middle ISO? I can't seem to find much information on this.

My 'unknown unknowns' are just that: I have no idea what I don't know but might be useful. I've read a few reviews but the gnarly and wise folk on here will no doubt know all the down and dirty stuff that I would take months to work out on my own - such as how to deal with the issue of setting latency as you shuffle between technical camera use and use on the XF!

All donations of knowledge gratefully received, and thanks in advance!


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