I have just bought myself a new lens and started to learn more and more about my camera. I'm loving it and it's fast becoming my hobby. I almost cannot wait to get outdoors to get an opportunity to take photos.
I have recently started using the M mode on my Rebel XS as I have been taking evening photo's and over-exposing them with some good results here and there. My issue is that sometimes in manual mode I can set my aperture to 3.5 and then I take the photo, however, my camera then seems to move the setting back to around 5.6.
I then try to change the aperture setting back to 3.5 and it will not do it. For some reason I cannot seem to take advantage of the 3.5 aperture setting.
I am using the Tamron 18-270mm VC Model B003 F/3.5-6.3 Di II VC LD Aspherical [IF] MACRO lens. While this lens is great and possibly more than I need for my little entry level Rebel EOS XS, I wanted a lens that gave me a relatively wide angle and zoom capabilities without compromising on the aperture options. My camera is also capable of handling the aperture settings, but it keeps defaulting to 5.6 and will then not allow me to change it.
Please can anyone offer me some advice on this?
If you need any further information on this, please let me know.
P.S. As mentioned, I'm trying to over-expose my images at night. Using shutter speeds between 15" - 30" and trying to use the maximum possible aperture on my lens. My pictures are being taken late at night when there is very little natural light.