In-camera lens correction speed of K5 over K7

LowVoltage · 02-03-2011, 12:57 PM

I'm hoping somebody can comment, based on personal experience, about the K5's speed in correction for lens distortion and CA versus the K7.

A common question on PF discusses why any given DSLR, usually a K7 or K-x, is rather sluggish to respond after taking a photo. The typical response from forum members is to ask if the photographer has the distortion and/or aberration correction settings turned on, as these settings will affect camera responsiveness.

As a rule I have left the automatic corrections off on my K7, although I do wonder about the effectiveness of the CA corrections. Can anybody state, one way or another, if the processing times have improved on the K5 over the K7?

RonHendriks1966 · 02-03-2011, 01:37 PM

Well the K-5 is a slower camera then the K-7, making the extra waiting time not so painfull.

I only use these settings on my DA14mm where I shoot RAW+, otherwise I'm shooting RAW only.

LowVoltage · 02-03-2011, 05:38 PM

Originally posted by RonHendriks1966

Well the K-5 is a slower camera then the K-7, making the extra waiting time not so painfull.

Am I understanding that correctly? The K-5 is actually slower to respond?

Something I considered as a factor is that the K-5 shoots 14bit RAW instead of 12bit, and by extension the file size is larger.

RonHendriks1966 · 02-04-2011, 07:09 AM

well that and the fact that it is handling more megapixels makes the K-5 slower then the K-7, having the same processor.

SteveB · 02-04-2011, 02:03 PM

I just read a short review of the K-5 in a magazine where they commented on how the lens correction really slowed down the camera and had to be turned off. Strange though that they loved the D7000 and never noticed its weedy buffer that slows the camera to a crawl much too soon for a £1k camera.

pentup · 02-10-2011, 03:48 PM

Originally posted by SteveB

Strange though that they loved the D7000 and never noticed its weedy buffer that slows the camera to a crawl much too soon for a £1k camera.

I wonder if the Nikon raw files are significantly smaller than the K5's? I read somewhere that the D7000 uses lossy raw files (which seems very strange for me -- if I want lossy compression, surely that's what jpeg is for... ? Does Nikon do this to compensate for slow processing?) and -- well, does the K5 use lossless raw? I had assumed so. In any event, I find myself wondering whether my computer will be able to handle Lightroom processing of such large files; it's sluggish enough when working with K7 raw files.

02-03-2011, 12:57 PM	#1
LowVoltage Veteran Member Join Date: Jul 2009 Location: Mount Joy, PA Photos: Gallery Posts: 544	In-camera lens correction speed of K5 over K7 I'm hoping somebody can comment, based on personal experience, about the K5's speed in correction for lens distortion and CA versus the K7. A common question on PF discusses why any given DSLR, usually a K7 or K-x, is rather sluggish to respond after taking a photo. The typical response from forum members is to ask if the photographer has the distortion and/or aberration correction settings turned on, as these settings will affect camera responsiveness. As a rule I have left the automatic corrections off on my K7, although I do wonder about the effectiveness of the CA corrections. Can anybody state, one way or another, if the processing times have improved on the K5 over the K7?

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02-03-2011, 01:37 PM	#2
RonHendriks1966 Banned Join Date: Jan 2009 Photos: Gallery Posts: 9,675	Well the K-5 is a slower camera then the K-7, making the extra waiting time not so painfull. I only use these settings on my DA14mm where I shoot RAW+, otherwise I'm shooting RAW only.

02-03-2011, 05:38 PM	#3
LowVoltage Veteran Member Join Date: Jul 2009 Location: Mount Joy, PA Photos: Gallery Posts: 544 Original Poster	Originally posted by RonHendriks1966 Well the K-5 is a slower camera then the K-7, making the extra waiting time not so painfull. Am I understanding that correctly? The K-5 is actually slower to respond? Something I considered as a factor is that the K-5 shoots 14bit RAW instead of 12bit, and by extension the file size is larger.

02-04-2011, 07:09 AM	#4
RonHendriks1966 Banned Join Date: Jan 2009 Photos: Gallery Posts: 9,675	well that and the fact that it is handling more megapixels makes the K-5 slower then the K-7, having the same processor.

02-04-2011, 02:03 PM	#5
SteveB Veteran Member Join Date: Mar 2007 Location: U.K. Posts: 685	I just read a short review of the K-5 in a magazine where they commented on how the lens correction really slowed down the camera and had to be turned off. Strange though that they loved the D7000 and never noticed its weedy buffer that slows the camera to a crawl much too soon for a £1k camera.

02-10-2011, 03:48 PM	#6
pentup Veteran Member Join Date: Jul 2010 Location: Flushing NY Photos: Albums Posts: 413	Originally posted by SteveB Strange though that they loved the D7000 and never noticed its weedy buffer that slows the camera to a crawl much too soon for a £1k camera. I wonder if the Nikon raw files are significantly smaller than the K5's? I read somewhere that the D7000 uses lossy raw files (which seems very strange for me -- if I want lossy compression, surely that's what jpeg is for... ? Does Nikon do this to compensate for slow processing?) and -- well, does the K5 use lossless raw? I had assumed so. In any event, I find myself wondering whether my computer will be able to handle Lightroom processing of such large files; it's sluggish enough when working with K7 raw files.