Need some help on some HDR

Right, I know how to do HDR - but im a little confused.

My camera does support bracketing, but it only brackets at +-0.7EV - I have googled and searched to try and find out if i can bump it up to about 1EV, but sadly i cant.

So i then heard that i need to use different stops - slight problem...

How do I change the F-number on my cam while keeping the same exposure? Ie, i dont want the camera to auto adjust its exposure everytime i change the aperture size, since i would just end up with the same image again...

I know there will probably be an easy answer to this - as usual :P

Thanks

You might start by telling us what camera you are using...???

Ooops sorry lol, its a sony a300 at the mo - slightly irrelevant cam but ohwell

If you are doing it manually, you never change the aperture setting.
Only shutter speed changes.

Exposure bracketing is taking more than one photo at different exposure levels. Exposure = the amount of light hitting the sensor. That amount is set by the size of the hole it gets through (aperture) and the time you let it through (shutterspeed) . A third element is the sensitivity of the sensor for that particular amount of light (ISO value).

Unfortunately the size of the hole (together with the focal length of the lens) also determine the depth of field and the "sharpness" of your image. So with exposure bracketing - like maxblack pointed out - you will not want to change that and therefor leave the aperture the same. You can change the shutterspeed and - less usual the ISO value (that has other consequenses like changing noise levels...)

Hope this helps.

Edit: I checked the specs for your camera and it support Exposure compensation up to +/-2 stops. But you'll have to do that manually. So it is probably asier to just change the shutterspeed - (if the object allows for it and does not move) When shooting landscapes beware of moving branches and leaves and animals (and cars...)

peck68 wrote in post #9224223
So i then heard that i need to use different stops - slight problem...

How do I change the F-number on my cam while keeping the same exposure?

First, you don't change the aperture - you want it the same. Next, you don't want the same exposure, that's what HDR is about - 3 (or more) separate exposures - shadow, normal, highlights. Put your camera on manual and use the settings for a normal exposure, then change your shutter speed to underexpose by how ever many stops you want, then change it to overexpose by how ever many stops you want.