My thoughts are this for you, Graham, who has easily vaulted past most all members here in Dante's Forum in both gear and knowledge/experience (let's face it, your photo gear in the back of your supercharged 500hp Range Rover is the only reason why your 0-60 times exceed ten seconds :ROTFL
.
I've obviously fallen far down in esteemed gear acquisition status here in Dante's Forum as I
only have one MFDB.
That being said, I did make the jump from the IQ180 to the IQ3 100MP----the major reason being the ability to shoot at higher ISO allows me to more easily balance ambient light and studio lighting on location (for longer periods of time) while the sun sets. And that's using the new Phase XF camera.
I know you could make the IQ180 sing on a tech camera, but the CMOS sensor of your IQ150 is simply what
makes things easier, not necessarily better. (Pssst---that hdmi and SmallHD Sidefinder on the IQ3 100MP is really cool!). You mentioned using the IQ180 on the Phase XF----and if that's the plan, go for it. The Phase XF really makes the difference in ease of use, particularly with regard to autofocus. IQ150 on tech; IQ180 on XF.
Then, if at a later time you feel comfortable, you can trade in both IQ150 and IQ180 to the latest and greatest IQ3 CMOS back. The IQ180 retains value simply because it is the highest MP CCD and (tech nerds can scream CMOS all they want) the IQ180 has a proven track record in actual use in creating stunning images. If I didn't need (ok it's want) the ability to more easily balance ambient light with flash, I could have easily stayed with the IQ180 and been quite content. And especially if I were to only photograph landscapes, I could easily have stayed with the IQ180 (both tech cam and XF). No hdmi, but you still have USB3 and the Surface Pro when desired.
Now being the slut I am, you know that life is short, and you deserve the very best Graham. It may be easier to simply bite the bullet and get the IQ3 100MP.
Then, convert your IQ150 to full spectrum/IR..... :thumbs:
See you at Pigs in the Southwest 2017. I'm looking forward to seeing your new kit
s.
ken