PentaxForums.com - View Single Post - K20D exposure and anti-shake

RiceHigh · 04-05-2009, 02:07 AM

Originally Posted by kcc

I am new to DSLR and I just bought the K20D for a month. Everything is fine so far. I have two questions here:
1. After buying the K20D, I looked through the Web so as to know more about the camera (and that's why I am here). I was informed that the camera is a little bit under-exposed, but I want to know how much. That is, if I set the EV compensation, but how much (1/3? 1/2?) should I set so that I can get normal exposure?

No fixed setting. Under or over exposure of the K20D, or simply exposure inaccuracy and inconsistency, varies with different lenses used and for different scenes. There is no straight rule to overcome this issue, except on a trial and error basis for each shot to be made. See some statistics on the DPR sample photos made by them and you'll know more for what I inform:-

RiceHigh's Pentax Blog: K20D Exposure Inaccuracy and Inconsistency

As for how different lenses' exposure tendency, see my homepage for some of the Pentax lenses of different generations:-

RiceHigh's (Pentax) DSLR and Lens Measurbation Page on Exposure Accuracy and More..

2. I used to use a non-DSLR camera that also has anti-shaking property and timer. Now if I want to take a shot with long exposure time, I would simply activate the 2 sec timer so that my finger would not blur the photo. By this way normally I can have the exposure time a step slower and still get satisfactory result. Now for K20D, by some reason (the forum has discussed this), when I activate the timer, the anti-shake would automatically deactivate itself, which renders the above technique useless. Any thoughts?

Best wishes,
KCC

2 sec timer is supposed to be used for the camera mounted on a tripod and the user wants to lock up the mirror 2 seconds before. As the SR cannot work on tripod, it disables it automatically to avoid issues.

Hope all the above do help.

04-05-2009, 02:07 AM	#13
RiceHigh Pentaxian Location: Hong Kong Gallery Photos: 0 Posts: 1,934	Originally Posted by kcc I am new to DSLR and I just bought the K20D for a month. Everything is fine so far. I have two questions here: 1. After buying the K20D, I looked through the Web so as to know more about the camera (and that's why I am here). I was informed that the camera is a little bit under-exposed, but I want to know how much. That is, if I set the EV compensation, but how much (1/3? 1/2?) should I set so that I can get normal exposure? No fixed setting. Under or over exposure of the K20D, or simply exposure inaccuracy and inconsistency, varies with different lenses used and for different scenes. There is no straight rule to overcome this issue, except on a trial and error basis for each shot to be made. See some statistics on the DPR sample photos made by them and you'll know more for what I inform:- RiceHigh's Pentax Blog: K20D Exposure Inaccuracy and Inconsistency As for how different lenses' exposure tendency, see my homepage for some of the Pentax lenses of different generations:- RiceHigh's (Pentax) DSLR and Lens Measurbation Page on Exposure Accuracy and More.. 2. I used to use a non-DSLR camera that also has anti-shaking property and timer. Now if I want to take a shot with long exposure time, I would simply activate the 2 sec timer so that my finger would not blur the photo. By this way normally I can have the exposure time a step slower and still get satisfactory result. Now for K20D, by some reason (the forum has discussed this), when I activate the timer, the anti-shake would automatically deactivate itself, which renders the above technique useless. Any thoughts? Best wishes, KCC 2 sec timer is supposed to be used for the camera mounted on a tripod and the user wants to lock up the mirror 2 seconds before. As the SR cannot work on tripod, it disables it automatically to avoid issues. Hope all the above do help.