Base Shutter Speed

ColinK70 · 04-30-2023, 01:24 PM

Hi

would someone be able to tell me how I can set a base shutter speed on my K70 so it wont drop below this, I have this in mind for wildlife work. Currently using U1 as a custom user mode set to manually selecting the aperture and shutter speed with the camera automatically adjusting the ISO. However if I select a high shutter speed this seems gets forgotten once the camera goes to sleep or is powered off.

As with setting an ISO range I would like to be able to set a base shutter speed the camera wont drop below, and will remember as I have missed shots when the camera has reverted to a lower speed, If I can set a base shatter speed depending on the focal length of lens I'm using this will increase my rate of sharper shots.

many thanks

**UncleVanya** · 04-30-2023, 01:31 PM

Essentially you want a minimum. I can’t recall how to enable that but if you use auto iso you can set the program line to slow/normal/fast. This modifies the lowest shutter speed it attempts to set before raising iso.

**ramseybuckeye** · 04-30-2023, 01:50 PM - **1 Like**

You could just shoot in Tv or TAv with auto ISO, it will stay at the shutter speed you select

The Squirrel Mafia · 04-30-2023, 01:56 PM

^ This. TAv with auto ISO. Shutter will stay at whatever you set it & ISO will climb or lower as required. Aperture stays the same until you change it as well.

You can always "reset" the exposure by pushing the "Green" button if you have to.

**seventhdr** · 04-30-2023, 09:00 PM

Pentax cameras don't have this facility built into them. I think some Nikon models have this feeature.

Regards

Chris

pschlute · 05-01-2023, 01:10 AM

Originally posted by ColinK70

would someone be able to tell me how I can set a base shutter speed on my K70 so it wont drop below this, I have this in mind for wildlife work. Currently using U1 as a custom user mode set to manually selecting the aperture and shutter speed with the camera automatically adjusting the ISO

This is the same as TAv mode on your mode dial. Some manufacturers allow you to set an AUTO ISO in Manual mode, Pentax instead uses TAv mode. They are both identical modes.

Your problem is that your camera does not remember the shutter speed last used when it wakes/turns on. If you use TAv mode it will remember your last set shutter speed/aperture on wakeup/turn on

The reason why it wont do this in USER modes is because the USER mode remembers things as they were when the mode was last saved. So you can in your USER mode set for example 1/500s and f5.6....then save the mode. Now it will always default to those settings on wakeup/turn on.

ColinK70 · 05-02-2023, 09:29 AM - **3 Likes**

TAv mode looks like the answer, I have never bothered with it before as was always shooting Manual or custom modes. Feel a bit daft now as it was staring me in the face ! I will look forward to giving it a go next time I am out and about.

p.s just picked up a A series100mm 2.8 (non macro) lens and very impressed with it, may try and post some pictures when I get chance.

Thank you for all your helpful replies

Colin

**StigVidar** · 05-26-2023, 12:12 AM

Originally posted by seventhdr

Pentax cameras don't have this facility built into them. I think some Nikon models have this feeature.

Regards

Chris

It is present in K-3 III where you can set a shutter time like asked for in this thread.

https://www.ricoh-imaging.co.jp/english/support/man-pdf/k-3-3.pdf on page 57

**seventhdr** · 05-28-2023, 08:50 PM

Originally posted by StigVidar

It is present in K-3 III where you can set a shutter time like asked for in this thread.

https://www.ricoh-imaging.co.jp/english/support/man-pdf/k-3-3.pdf on page 57

Great. I think that the K3-III is the only camera that has this feature.

Great to see it's been added.

Regards

Chris

04-30-2023, 01:24 PM	#1
ColinK70 New Member Join Date: Feb 2022 Photos: Gallery \| Albums Posts: 11	Base Shutter Speed Hi would someone be able to tell me how I can set a base shutter speed on my K70 so it wont drop below this, I have this in mind for wildlife work. Currently using U1 as a custom user mode set to manually selecting the aperture and shutter speed with the camera automatically adjusting the ISO. However if I select a high shutter speed this seems gets forgotten once the camera goes to sleep or is powered off. As with setting an ISO range I would like to be able to set a base shutter speed the camera wont drop below, and will remember as I have missed shots when the camera has reverted to a lower speed, If I can set a base shatter speed depending on the focal length of lens I'm using this will increase my rate of sharper shots. many thanks

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04-30-2023, 01:31 PM	#2
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,454	Essentially you want a minimum. I can’t recall how to enable that but if you use auto iso you can set the program line to slow/normal/fast. This modifies the lowest shutter speed it attempts to set before raising iso.

04-30-2023, 01:50 PM - 1 Like	#3
ramseybuckeye Site Supporter Join Date: Apr 2009 Location: Hampstead, NC Photos: Gallery Posts: 17,295	You could just shoot in Tv or TAv with auto ISO, it will stay at the shutter speed you select

04-30-2023, 01:56 PM	#4
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,056	^ This. TAv with auto ISO. Shutter will stay at whatever you set it & ISO will climb or lower as required. Aperture stays the same until you change it as well. You can always "reset" the exposure by pushing the "Green" button if you have to.

04-30-2023, 09:00 PM	#5
seventhdr Site Supporter Join Date: Mar 2007 Location: Christchurch, New Zealand Photos: Gallery Posts: 1,452	Pentax cameras don't have this facility built into them. I think some Nikon models have this feeature. Regards Chris

05-01-2023, 01:10 AM	#6
pschlute Moderator Loyal Site Supporter Join Date: Mar 2007 Location: Surrey, UK Photos: Gallery Posts: 8,215	Originally posted by ColinK70 would someone be able to tell me how I can set a base shutter speed on my K70 so it wont drop below this, I have this in mind for wildlife work. Currently using U1 as a custom user mode set to manually selecting the aperture and shutter speed with the camera automatically adjusting the ISO This is the same as TAv mode on your mode dial. Some manufacturers allow you to set an AUTO ISO in Manual mode, Pentax instead uses TAv mode. They are both identical modes. Your problem is that your camera does not remember the shutter speed last used when it wakes/turns on. If you use TAv mode it will remember your last set shutter speed/aperture on wakeup/turn on The reason why it wont do this in USER modes is because the USER mode remembers things as they were when the mode was last saved. So you can in your USER mode set for example 1/500s and f5.6....then save the mode. Now it will always default to those settings on wakeup/turn on.

05-02-2023, 09:29 AM - 3 Likes	#7
ColinK70 New Member Join Date: Feb 2022 Photos: Gallery \| Albums Posts: 11 Original Poster	TAv mode looks like the answer, I have never bothered with it before as was always shooting Manual or custom modes. Feel a bit daft now as it was staring me in the face ! I will look forward to giving it a go next time I am out and about. p.s just picked up a A series100mm 2.8 (non macro) lens and very impressed with it, may try and post some pictures when I get chance. Thank you for all your helpful replies Colin

05-26-2023, 12:12 AM	#8
StigVidar Site Supporter Join Date: Nov 2006 Location: Norway Photos: Gallery \| Albums Posts: 705	Originally posted by seventhdr Pentax cameras don't have this facility built into them. I think some Nikon models have this feeature. Regards Chris It is present in K-3 III where you can set a shutter time like asked for in this thread. https://www.ricoh-imaging.co.jp/english/support/man-pdf/k-3-3.pdf on page 57

05-28-2023, 08:50 PM	#9
seventhdr Site Supporter Join Date: Mar 2007 Location: Christchurch, New Zealand Photos: Gallery Posts: 1,452	Originally posted by StigVidar It is present in K-3 III where you can set a shutter time like asked for in this thread. https://www.ricoh-imaging.co.jp/english/support/man-pdf/k-3-3.pdf on page 57 Great. I think that the K3-III is the only camera that has this feature. Great to see it's been added. Regards Chris