K-5 Live View Histogram


dangie

Link Posted 21/02/2014 - 13:32
A quick question, sorry if its been asked before.

Does the histogram update when using Live View with the K-5 in manual mode?

I noticed that when selected to Live View and on manual control, adjusting either aperture or shutter speed did not affect the Histogram. I would have expected the graph to move depending on aperture/shutter settings.

Hope this makes sense. Thank you.
6th Year Apprentice Pensioner

McGregNi

Link Posted 21/02/2014 - 18:56
The small LV histogram does not update to reflect exposure control adjustments. It responds to actual changes in lighting levels, not your exposure settings on the camera (not ISO either). These exposure adjustments are only effective when the shot is taken - then your histogram will show the readings for the actual shot ... bear in mind this is for the Camera JPEG (as processed), not the RAW.
My Guides to the Pentax Digital Camera Flash Lighting System : Download here from the PentaxForums Homepage Article .... link
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver
Last Edited by McGregNi on 21/02/2014 - 18:59

dangie

Link Posted 22/02/2014 - 09:29
Thank you. Not really sure of the point in displaying it. Seems to be of limited use.
6th Year Apprentice Pensioner

Chrism8

Link Posted 22/02/2014 - 09:40
dangie wrote:
Does the histogram update when using Live View with the K-5 in manual mode?

I know exactly what you mean, I've an X100s where it does update in live view and is really useful when trying to either underexpose or overexpose in camera and see the result.

Used it loads of times in some low light portrait, nude. glamour work
Chris

www.chrismillsphotography.co.uk

" A Hangover is something that occupies the Head you neglected to use the night before".

-------------------------------------------------------------
K1 - Sigma 85mm F1.4, Pentax DFA 150 -450 F4.5 / 5.6, Pentax DFA* 24 - 70 F2.8

Samyang 14mm F2.8, Pentax DFA* 70-200 F2.8

K3iii + K3ii + K5iis converted to IR, Sigma 17 - 70 F2.8, Pentax 55 - 300 F4.5 / F5.6 PLM

McGregNi

Link Posted 22/02/2014 - 16:18
The LV histogram is a guide to the ambient lighting dynamic range spread around the meters measurement of a grey midtone. This is not the same thing as a photos exposure value (EV), which is controlled by the user. By assessing the dynamic range in a scene you come to decide where to pitch the actual photos midtone - either by exposure compensation or manual mode ... In making such a judgement you also re-pitch the whole spread of brightness values, so the judgment is also about what to prioritise (eg shadows, highlights).

So the LV histogram is the guide to the Dr spread in a scene to help make our own exposure value judgement. After taking a shot we can reassess the result based on the graph of our actual photo, which may not be the same as the ambient light levels.
My Guides to the Pentax Digital Camera Flash Lighting System : Download here from the PentaxForums Homepage Article .... link
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver
Last Edited by McGregNi on 22/02/2014 - 16:19
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