In camera Lens correction


xbow

Link Posted 13/03/2011 - 10:29
It's been suggested that if you choose to use in camera lens correction if will slow down camera write speeds. Have any of you checked this or have practical experience? I think I'd like to keep CA lens correction turned on - but not if it's going to slow the camera down significantly!

Vic.
K5, LightRoom 5
Sigma 8-16 Pentax DA 16-45 Pentax DA 55-300 Pentax 18-55WR Tamron 90 Di Macro Metz 44 AF-1

johnriley

Link Posted 13/03/2011 - 12:52
It does slow it down, but not much. As it's probably only going to used for architectural shots that may not be a problem. I wouldn't use it for sports shots at 6 or 7fps!

I plan to use it when needed when we have our K-5s.
Best regards, John

Cisco

Link Posted 13/03/2011 - 13:53
is this NOT the Purple Fringing around branches against the sky ??

tried this on my new K7 and I can't see any difference with it ON or OFF !?
.
K-7 | K10 | DA 18-135 | DA 18-250 | DA 55-300 | DFA 100 |

johnriley

Link Posted 13/03/2011 - 13:56
I was referring to ditortion correction, but there is correction for CA as well. It will only work with JPEG capture.
Best regards, John

Cisco

Link Posted 13/03/2011 - 14:02
it says you can save and use with a raw image, but only if developed in camera ! is that correct ??
K-7 | K10 | DA 18-135 | DA 18-250 | DA 55-300 | DFA 100 |
Last Edited by Cisco on 13/03/2011 - 14:03

alfpics

Link Posted 13/03/2011 - 14:05
The lens corrections (both types) with the K7 are applied to the RAW file (if you shoot RAW that is!)

Andy
Andy

Cisco

Link Posted 13/03/2011 - 14:08
for in camera use ONLY though ?? not to LR or ACR ?? right ?
K-7 | K10 | DA 18-135 | DA 18-250 | DA 55-300 | DFA 100 |

xbow

Link Posted 13/03/2011 - 14:59
Cisco wrote:
it says you can save and use with a raw image, but only if developed in camera ! is that correct ??

Just had a look at the manual and thats how I read it. Data saved in RAW file and for In-camera processing. In that case I'll leave it turned off and use LR instead. Shame but I guess maybe we expect too much sometimes!

Vic.
K5, LightRoom 5
Sigma 8-16 Pentax DA 16-45 Pentax DA 55-300 Pentax 18-55WR Tamron 90 Di Macro Metz 44 AF-1

Anvh

Link Posted 13/03/2011 - 15:18
Cisco wrote:
for in camera use ONLY though ?? not to LR or ACR ?? right ?

Doesn't the RAW program suplied also have lens correction?

Any ways for lens correction you need to know which lens is on it, the focal length you use if you use a zoom and the camera you used and all that is already recorded in the EXIF data, and so as far as i know no extra data is being giving to a RAW file if you've the corrections on.

But please prove me wrong
Stefan


K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ
Last Edited by Anvh on 13/03/2011 - 15:19

geclinke

Link Posted 13/03/2011 - 16:29
I felt it slowed things down a lot on my K5.

This was most noticeable when I was trying to shoot some friends at Go Ape not long ago, and wanted to use machine gun mode for zip-lines etc. I only got every other person, as I was waiting ages for the camera to process the buffer each time.

Not had a chance to try an "on" and "off" shot to see how much difference it actually makes. In future though, for time critical shots, it's going to be switched off...
k5, 50mm FA, 18-55mm Kit, 50-200mm DA, 15mm Fisheye Sigma, 10-17mm DA Fisheye, 18-55mm DA WR, DA* 60-250, DA* 16-50

alfpics

Link Posted 13/03/2011 - 17:21
It does slow things up - ie whereas the shot preview is fairly instantaneous normally, with corrections applied, it is several seconds.

Andy
Andy

xbow

Link Posted 13/03/2011 - 18:35
Thanks for the heads up on the time delay Guys, I'll keep it turned off I think!

Vic.
K5, LightRoom 5
Sigma 8-16 Pentax DA 16-45 Pentax DA 55-300 Pentax 18-55WR Tamron 90 Di Macro Metz 44 AF-1
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