Pentax KP ignores TAV setting


newbiek50user

Link Posted 27/08/2018 - 16:18
Hi,
Why does my new camera ignore my capture settings?
I took delivery of a new Pentax KP three days ago. On Saturday I took it on a field trip to test it photographing birds in flight. I set the Mode button to TAV, AF to AF.C, Continuous shooting (Low), back-button AF, first photo action Focus Priority, Shutter speed to 1/2000 and Aperture to F8, leaving ISO to AUTO. I was using the camera with my Pentax 55-300 PLM lens @ 300 mm. The button with various user settings was “.” (disable).
The camera ignored my shutter and aperture settings completely! The photos taken were all at 1/450 and f/4. Why? What use is the setting if it doesn’t allow the user to pre-set and save the desired capture settings? Have I failed to overlook some setting that demands camera override?
I tried it at home again today and I have the same problem having scoured the User Manual.
Any suggestions?

Chrism8

Link Posted 27/08/2018 - 16:24
What were the limits set in camera for min and max ISO ? If these were to low, that may have caused the issue.
Chris

www.chrismillsphotography.co.uk

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

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K1 - Pentax 100 Macro F2.8 - Sigma 85mm F1.4, Pentax 150 -450 F4.5 / 5.6

Pentax FA 24 - 70 F2.8, Sigma 100-300 F4, Samyang 14mm F2.8, Sigma 70-200 F2.8,

K5iis - Sigma 17 - 70 F2.8, Sigma 70 - 300 F3.5/F5.6, Sigma 18 - 200 F3.6 / F4.5.

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McGregNi

Link Posted 27/08/2018 - 17:24
F8 with 1/2000th ..... Was it very bright? If not then the ISO would have to ramp up rather high, and as Chris said the pre-set limit could have been exceeded.

There is also a setting for auto-exposure adjustment, which if activated world override the user set parameters if these caused oor exposure. This may have happened, causing your pre-set aperture and ISO to be overridden....?

It's the same as aircraft autopilot .... The user still has to have a full in depth knowledge of exactly what's going on and the limits of the automation to remain fully in control of things.
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

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pschlute

Link Posted 27/08/2018 - 17:28
"The button with various user settings was “.” (disable)"

Can you explain that in more detail.
Peter



My Flickr page

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newbiek50user

Link Posted 27/08/2018 - 17:37
Hi, Thanks for the replies.
Chris, I just left ISO as AUTO. I didn't check the limits. I'll check.
McGregNi, It was sunny, but I didn't check whether there were pre-set limits on AUTO. I will check that. Thank you. Also, I haven't come across thie setting for Auto Exposure adjustment. I'll look for that.
On the setting dial on the KP, the dot (.)mark seemed to me to be to do nothing with the set mode whereas the other settings are for things like HDR. Maybe my understanding is wrong. Thanks.

M

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newbiek50user

Link Posted 27/08/2018 - 23:24
I have now checked and there are/were no limits on ISO in TAV and the only Auto Exposure adjustment that I can find relates to EV and that setting is OFF. I think that I now understand the Settings dial since its use appears to depend on the Function dial . In the Manual it is described as being the Smart Function. The dot disables the Setting Dial operation; The other positions relate to changing the specific settings for AE, HDR, continuous shooting, Image finishing tone.capture type of AA filter and. lastly, monitor brightness. You use the Function dial to choose one of these functions and the Settings dial to change the settings for that dial. Apparently I was wrong to say that the Dot was on the settings dial - it is on the Function dial so all it does is to disable the use of the Settings dial. It would have had no impact on the use of the TAV mode.
So I still don't understand why I cannot preset my choices of aperture and shutter speed within TAV (given no limits of ISO and no automatic exposure corrections).

pschlute

Link Posted 28/08/2018 - 00:13
I suggest you take some pictures and post them on here with exif intact.
Peter



My Flickr page

newbiek50user

Link Posted 28/08/2018 - 06:01
Thanks Peter, McGregNi and Chris but I've decided to send the KP back to Amazon. The TAV problem was really just the last straw. I've decided to replace it with a K3ii while they're still available new. The KP did have a tilting screen and this was its main selling point to me. It did have built-in flash. However, it also had weird grips - none of which was really comfortable and crowded buttons which made using it a bit of a pain. It had a plasticky feel and it was just overly complex. A K3ii will have a proper body, a top lcd, a proper battery, gps and separate AF and AE lock buttons. It will also cost less.
Thank you again for your help.

redbusa99

Link Posted 28/08/2018 - 10:14
good choice. just try and find a right angle viewfinder for it and the missing articulated screen is not so much of a loss.
K3 II and the odd lens or 2

Flickr
ppg
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