Hi all -
I finally took the plunge into the DSLR world. After getting tired of dark and blurry p&s photos, I decided I wanted to not only learn more about the manual settings and what not, but also step up to a little more serious camera. I read countless reviews and ended up with the Rebel XS (Got it on amazon for what I thought was a reasonable $459). Its supposed to be here next week and I am already reading up on what various settings mean, future lenses, etc. I think I found myself a more expensive hobby than my mac fetish lol.
Anyway, to my point. I understand a lot of what the tutorials are saying about lenses and aperture. A lower aperture number means a more wide open lens that lets more light in. Since all a photo is is light, more light is for the most part better. I also see lenses have various aperture ratings (for example, the canon 17-55 IS USM has a fixed aperture of 2.8).
However I get lost on this part... I read you can change the aperture on the camera itself - a lower number would focus on less (such as a persons face with a blurry background) and a higher number would focus on more (the face and the background). Can someone explain how this ties to the amount of light the lens lets in and the aperture rating of the lens itself?
And finally, how does aperture relate to ISO? Does a lower aperture number just let you get away with a lower ISO sensitivity? Ie if I was shooting in a darker church, I could set a lower ISO number with a lens that had a 2.8 aperture than a lens with a 3.5 aperture?
Sorry for the litany of questions - I have been doing a lot of reading and I am a little confused on a couple points, and would just like confirmation on a couple as well.
I am really (really) looking forward to getting into this hobby. I must say, between all of my horribly blurry/dark photos I have taken over the years, and watching the "photo of the day" threads here at MR, I cant wait for my canon to show up!
- Chris
I finally took the plunge into the DSLR world. After getting tired of dark and blurry p&s photos, I decided I wanted to not only learn more about the manual settings and what not, but also step up to a little more serious camera. I read countless reviews and ended up with the Rebel XS (Got it on amazon for what I thought was a reasonable $459). Its supposed to be here next week and I am already reading up on what various settings mean, future lenses, etc. I think I found myself a more expensive hobby than my mac fetish lol.
Anyway, to my point. I understand a lot of what the tutorials are saying about lenses and aperture. A lower aperture number means a more wide open lens that lets more light in. Since all a photo is is light, more light is for the most part better. I also see lenses have various aperture ratings (for example, the canon 17-55 IS USM has a fixed aperture of 2.8).
However I get lost on this part... I read you can change the aperture on the camera itself - a lower number would focus on less (such as a persons face with a blurry background) and a higher number would focus on more (the face and the background). Can someone explain how this ties to the amount of light the lens lets in and the aperture rating of the lens itself?
And finally, how does aperture relate to ISO? Does a lower aperture number just let you get away with a lower ISO sensitivity? Ie if I was shooting in a darker church, I could set a lower ISO number with a lens that had a 2.8 aperture than a lens with a 3.5 aperture?
Sorry for the litany of questions - I have been doing a lot of reading and I am a little confused on a couple points, and would just like confirmation on a couple as well.
I am really (really) looking forward to getting into this hobby. I must say, between all of my horribly blurry/dark photos I have taken over the years, and watching the "photo of the day" threads here at MR, I cant wait for my canon to show up!
- Chris