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darrellc wrote:
Anyone have best practice or alt setup for a zoom?
I made three consecutive settings for my CY 35-70 at 35/50/70 f3.5 and will dial in appropriate one when I want to get EXIF approximately correct.
Any other suggestions?
Previous FM threads about using IBIS with zooms (e.g. steady shot IBIS with manual glass...A7 II, IBIS settings with manual focus zoom, and IBIS settings with alt zooms don't seem to reach a firm conclusion as to which is the best method of setting the IBIS focal length:
- to an intermediate value (say, 50mm for a 35-70mm zoom)
- to the shortest value (35mm)
- to the longest value (70mm)
- for each marked focal length (35mm, 50mm, and 70mm), as you're doing.
I prefer to use primes, although now the TAP might push me towards using one or other of the three 35-70mm zooms (Canon FD, Leica R, and Minolta MD) I've accumulated. So my thinking about this may be incorrect but here goes...
Setting the IBIS FL to the shortest value will provide stabilization at the end where it's least needed and under-compensate for the longer FLs whereas setting the IBIS FL to the longest value will provide stabilization at the end where it's most needed and over-compensate for the shorter FLs.
Setting the IBIS FL to an intermediate value will be correct for that FL, whilst over-compensating slightly for the shorter FL and under-compensating slightly for the longer FL. But this method is clearly the most convenient.
Setting the IBIS FL appropriately for each FL requires more effort but should yield the optimum results. However, if one follow's k-h.a.w's example by setting three buttons for SteadyShot, SteadyShot Adjust, and SteadyS. Focal Len., it shouldn't take more than a few seconds to manually switch the IBIS FL. I'm inclined do it this way and maybe also program the TAP with a FL of 51mm to identify the zoom.
On a related note, if one uses both 85mm and 90mm lenses rather than using two TAP FL slots would it be preferable to set 90mm as the IBIS FL, on the basis that slight under-compensation is preferable to slight over-compensation?
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