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11-17-2013, 04:38 PM   #16
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QuoteOriginally posted by starbase218 Quote
imho Tamron's 60/2.0 macro is a great idea. Unfortunately that's not available in Pentax mount.
The Zeiss ZK 50/2 Makro-Planar may be the closest in Pentax mount.
One of the niftiest fifties around.

11-18-2013, 12:37 PM   #17
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QuoteOriginally posted by gazonk Quote
I've discovered that my K-5 works better with the SR turned off when I use my DA35 ltd at very close range. I've been wondering if that could be fixed in firmware though: could it be that the SR mechanism doesn't compensate for the longer focal length of he lens at its closest focussing distances?
Seems logical to me. When you're very close, a very small movement will generate very easily an unsharp image.
I don't think (Ricoh, you listen ??) that SR is influenced by focus distance. It should in this case.

It may also just mean to Ricoh came to conclusion that in the case of Macro lenses, in-lens SR is quite more effective.
11-18-2013, 01:46 PM   #18
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QuoteOriginally posted by gazonk Quote
I've discovered that my K-5 works better with the SR turned off when I use my DA35 ltd at very close range. I've been wondering if that could be fixed in firmware though: could it be that the SR mechanism doesn't compensate for the longer focal length of he lens at its closest focussing distances?
Pentax would have to implement a 5-axis image stabilization for this, but I doubt they have hardware for more than 3 axis stabilisation in the body.
They would need two extra motion sensors for translational movement vertically and horizontally, which dominates shake pattern when close up.
11-18-2013, 02:11 PM   #19
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Would in-lens SR and in-body SR working together be too much to hope for?

11-18-2013, 02:17 PM   #20
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QuoteOriginally posted by Boris_Akunin Quote
Would in-lens SR and in-body SR working together be too much to hope for?
Yes; that would require them talking to each other - this would probably require additional pins in the mount to communicate the information from the lens.

11-18-2013, 02:30 PM   #21
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QuoteOriginally posted by Vylen Quote
Yes; that would require them talking to each other - this would probably require additional pins in the mount to communicate the information from the lens.
Well, we're hopng for an uncrippled K-mount anyway, they might as well add pins while they're at it...
11-18-2013, 02:34 PM   #22
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QuoteOriginally posted by Boris_Akunin Quote
Would in-lens SR and in-body SR working together be too much to hope for?
If they compensate for different types of shake they can easily work together, FI by letting the IBIS compensate for angular shake and let ILIS compensate for vertical and horizontal shift.

But it would be very difficult to get them to work together in compensating the same axis. Both system must know exactly what the other is doing so they don't overcompensate. One system must be the master, and other (slave) can only compensate what the master can't perfectly compensate for.
In the end you probably win very little over one system taking care of all shake.
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