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08-29-2015, 12:19 AM - 1 Like   #1261
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QuoteOriginally posted by stevebrot Quote
Would someone explain to me the logic that the D FA* 70-200/2.8 lens release somehow gates the FF body release (and vice versa). Seriously! The lineup currently lacks a normal zoom and nobody is getting their undergarments in a wad over that one despite two such lenses being on the road map.


Steve
Normal zoom (24-70) and wide zoom (15-30) is coming! been said many times.

08-29-2015, 02:49 AM   #1262
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Japanese retailers are still showing availability as autumn. The specific sites I'm looking at are normally very good at keeping their information up to date.

Last edited by JPT; 08-29-2015 at 07:02 PM.
08-29-2015, 06:25 AM   #1263
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so, kenspro, I have a question... is the image circle on the new lenses bigger than the image circle on the old FAs, to make up for Shake Reduction? and if so will, the older FAs going to need to be used without SR to aviod vignetting?

Last edited by normhead; 08-29-2015 at 06:41 AM.
08-29-2015, 06:34 AM   #1264
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QuoteOriginally posted by normhead Quote
so, kenspro, I have a question... is the image circle on the new lenses bigger than the image circle on the old FAs, to make up for Shake Reduction? and if so will, the older FAs going to need to be used without SR to avid vignetting?
Or SR with less amplitude?

08-29-2015, 07:08 AM   #1265
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QuoteOriginally posted by normhead Quote
if so will, the older FAs going to need to be used without SR to aviod vignetting?
The 150-450 is one of those new D FA lenses. Maybe one of the existing users here could answer that question. I suspect the image circle is identical to previous full-frame lenses.

And from what I can tell, A7II users who mount Pentax FA's (and similar) seem to report few vignetting problems due to Sony's shake-reduction when those lenses are used via E-mount to K adapters.
08-29-2015, 07:45 AM   #1266
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QuoteOriginally posted by rawr Quote
The 150-450 is one of those new D FA lenses. Maybe one of the existing users here could answer that question. I suspect the image circle is identical to previous full-frame lenses.

And from what I can tell, A7II users who mount Pentax FA's (and similar) seem to report few vignetting problems due to Sony's shake-reduction when those lenses are used via E-mount to K adapters.
Other evidence, as in the patent papers for the 70-200 suggested the image circle appeared to be a little larger than it needed to be, although without know how large it needed to be to avoid vignetting, we were really just guessing.
08-29-2015, 10:25 AM   #1267
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Vignetting or not depends on your requirements:

- You may or may not notice a loss of resolution.
- You may or may not notice some darkening.
- You may or may not be satisfied with the image you get
after correcting for darkening in the corners.
08-29-2015, 10:39 AM   #1268
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This will not be necessary - but if it should be for a particular lens (what follows is purely SPECULATIVE):

What's to keep them from offering a selectable VERY SLIGHT IBIS CROP wherever it is necessary for a legacy (or even current) FA lens? Didn't someone suggest last spring part of the long development period after the initial announcement is to 'test' and 'tune' the camera algorithms for the FA lenses? Recognizing how many potential customers already own legacy FA lenses, perhaps they're building a (switchable) in-camera ROM database of lens crop factors.

EDITED:


Last edited by monochrome; 08-30-2015 at 07:22 AM.
08-29-2015, 10:55 AM   #1269
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To be honest, they might as well let the user select the crop mode. 1.5, 1.4, 1.3, 1.2, 1.1, no crop => everyone is happy.
08-29-2015, 11:49 AM   #1270
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QuoteOriginally posted by FantasticMrFox Quote
To be honest, they might as well let the user select the crop mode. 1.5, 1.4, 1.3, 1.2, 1.1, no crop => everyone is happy.
No. Half the forum would moan.
08-29-2015, 11:53 AM   #1271
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QuoteOriginally posted by thibs Quote
No. Half the forum would moan.
If only half the forum would moan about the same thing something could be resolved.
08-29-2015, 01:15 PM   #1272
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Does any of the Minolta AF lenses need any kind of IBIS crop on Sony Alpha 850, 900 or 99?

None that has been reported.

Why would it be different with Pentax legacy lenses?
08-29-2015, 02:26 PM   #1273
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QuoteOriginally posted by monochrome Quote
This will not be necessary - but if it should be . . . . .

What follows is purely SPECULATIVE!!

What's to keep them from offering a VERY SLIGHT IBIS CROP wherever it is necessary for a legacy (or even current) FA lens? Didn't someone suggest last spring part of the long development period after the initial announcement is to 'test' and 'tune' the camera algorithms for the FA lenses? Recognizing how many potential customers already own legacy FA lenses, perhaps they're building a (switchable) in-camera ROM database of lens crop factors.
I'm guessing that most serious (i.e., those who would be willing to plunk down cash for an FF camera) do at least some PP already, so one solution would be to do your own minor cropping as part of the PP workflow.
08-29-2015, 02:32 PM   #1274
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QuoteOriginally posted by derekkite Quote
If only half the forum would moan about the same thing something could be resolved.
LOL yes
08-29-2015, 02:54 PM   #1275
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How could anyone possibly complain about being able to choose your crop mode to taste?
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