Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-03-2014, 01:01 PM   #1
MBM
Guest




How to I change the shutter and aperture?

I have always taken simple photos with this camera but when I tried to take a picture in the dark the photo came out unfocused. I need help with changing the camera's aperture and shutter.

12-03-2014, 01:16 PM   #2
Pentaxian
Na Horuk's Avatar

Join Date: Feb 2012
Location: Slovenia, probably
Photos: Gallery | Albums
Posts: 10,760
Hey, welcome! You can choose P mode and move the e-dial, which will shift the shutter and aperture, without affecting the brightness. Tv mode lets you choose the shutter speed, and the camera will do everything else. It is good to keep a shutter speed of at least 1/(2*focal length). So 50mm lens should be around 1/(2*50), which is 1/100. Shake reduction (SR) helps with that.
The other problem with dark scenes is Depth of Field. In dark photos, the aperture must be wide, but this causes the depth of field to be more shallow. If you shoot at f8, the depth of field will be very wide. But in darkness you need a smaller fnumber, like f2.8, which will cause the depth of field to be really shallow, perhaps only a couple centimeters. This means most of the photo will be unsharp.
So for dark photos it is best to raise the ISO (sensitivity), but this increases digital noise. Night time photography is a balancing act! With modern cameras, even very high ISO can be used.

Oh, one more thing. The camera will automatically keep a certain brightness of frames (automatic metering). You can affect this by the EV +/- button. But when there is not enough light, there is only so much you can do! This is why people use tripod (to keep photo still) and flash (to add light)
12-03-2014, 01:17 PM   #3
Pentaxian




Join Date: Oct 2009
Location: Far North Qld
Posts: 3,280
I think folks here would find it useful knowing which camera "this camera" is!?
You could also try reading the manual?
12-03-2014, 01:26 PM   #4
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 27,097
QuoteOriginally posted by Steve.Ledger Quote
You could also try reading the manual?
Indeed, the manual is a great place to start.

The short answer to the question is that the two dials (rear and front) that fall under the thumb and forefinger are used to change aperture and shutter speed, respectively. (At least in the default configuration.)


Steve

12-03-2014, 01:35 PM   #5
Pentaxian
aleonx3's Avatar

Join Date: Jul 2007
Location: Brampton, Ontario
Photos: Gallery | Albums
Posts: 3,888
Ever try to convince a 5D MKIII user that he is missing a rear dial on his camera, and watch the expression on his/her face?
Ask also how to change ISO while keeping the eye in the viewfinder? (kind of awkward, have the use the same index finger to press and then, turn the front dial).

Last edited by aleonx3; 12-03-2014 at 05:26 PM.
12-03-2014, 04:35 PM   #6
Imp
Pentaxian
Imp's Avatar

Join Date: Nov 2014
Location: Washington, DC
Photos: Gallery | Albums
Posts: 1,344
QuoteOriginally posted by aleonx3 Quote
Ever try to convince a 5D MKIII user that he is missing a rear dial on his camera, and watch the expression on his/her face?
wait... 5dmkIIIs only have one dial???
12-03-2014, 05:28 PM   #7
Pentaxian
aleonx3's Avatar

Join Date: Jul 2007
Location: Brampton, Ontario
Photos: Gallery | Albums
Posts: 3,888
QuoteOriginally posted by Imp Quote
wait... 5dmkIIIs only have one dial???
Don't think so, unless one can turn the wheel on the back of the camera to change value. I don't have the 5DmkIIIs, can someone confirm?
12-03-2014, 05:33 PM   #8
Site Supporter
SpecialK's Avatar

Join Date: Dec 2006
Location: So California
Photos: Gallery
Posts: 14,775
QuoteOriginally posted by Imp Quote
wait... 5dmkIIIs only have one dial???
There's a mkIII?

12-03-2014, 07:53 PM   #9
Forum Member
Adam_T4's Avatar

Join Date: Aug 2009
Location: NYC
Photos: Gallery
Posts: 52
Manual

I printed out the online manual for my K20 and read it about 3 times before I even got the camera delivered!
12-03-2014, 08:50 PM   #10
Pentaxian
aleonx3's Avatar

Join Date: Jul 2007
Location: Brampton, Ontario
Photos: Gallery | Albums
Posts: 3,888
QuoteOriginally posted by SpecialK Quote
There's a mkIII?
I think they are up to MK III now... costs around 3k.
12-03-2014, 09:02 PM   #11
Loyal Site Supporter
clackers's Avatar

Join Date: Jul 2013
Location: Melbourne
Photos: Albums
Posts: 8,615
QuoteOriginally posted by aleonx3 Quote
Don't think so, unless one can turn the wheel on the back of the camera to change value.
You can.
12-03-2014, 09:14 PM   #12
Pentaxian
aleonx3's Avatar

Join Date: Jul 2007
Location: Brampton, Ontario
Photos: Gallery | Albums
Posts: 3,888
QuoteOriginally posted by clackers Quote
You can.
So, the wheel (vertical position on the back of the camera) is similar to the function of the rear dial? Rather awkward movement of the thumb reaching down to the wheel, but I guess once you get used to it, then it should be fine.
12-03-2014, 09:28 PM   #13
Site Supporter
SpecialK's Avatar

Join Date: Dec 2006
Location: So California
Photos: Gallery
Posts: 14,775
QuoteOriginally posted by aleonx3 Quote
I think they are up to MK III now... costs around 3k.
Actually, rumors of a mkIV are starting...but I'll stick with the original for awhile :-)
12-03-2014, 09:34 PM   #14
Pentaxian
aleonx3's Avatar

Join Date: Jul 2007
Location: Brampton, Ontario
Photos: Gallery | Albums
Posts: 3,888
QuoteOriginally posted by SpecialK Quote
Actually, rumors of a mkIV are starting...but I'll stick with the original for awhile :-)
Since you have the 5D (original), so the big wheel on the back acts like a rear dial on the k-5, correct?
12-03-2014, 10:15 PM   #15
Loyal Site Supporter
clackers's Avatar

Join Date: Jul 2013
Location: Melbourne
Photos: Albums
Posts: 8,615
QuoteOriginally posted by aleonx3 Quote
So, the wheel (vertical position on the back of the camera) is similar to the function of the rear dial? Rather awkward movement of the thumb reaching down to the wheel, but I guess once you get used to it, then it should be fine.
Well, you see the guys turn it while looking down at the LCD on the top of the camera

Not my idea of ergononics, but there you go.

My NEX7 has three dials. The third is like the second Canon one, but it's only for ISO.

The K-S1 has the single dial and you hit the Exposure Comp button to toggle it between aperture and shutter.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, change the shutter, pentax help, shutter
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
how to change aperture on Kx? 4ngi3 Troubleshooting and Beginner Help 24 04-30-2014 11:10 PM
What is K-5II shutter resource and how much cost to change it ? Vejas Pentax K-5 2 01-10-2014 03:05 PM
Using K10 In Manual Mode Aperture And Shutter Settings Change Suddenly Racer X 69 Pentax DSLR Discussion 9 10-21-2013 12:16 PM
Question How do I change the asking price in the marketplace forum? Dirk Site Suggestions and Help 6 09-23-2013 05:04 PM
How do you where to start with Aperture and SHutter speed?? hockmasm Pentax DSLR Discussion 22 05-04-2010 12:57 PM



All times are GMT -7. The time now is 06:48 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top