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Originally Posted by lollipop
Larger lens opening (high low number aperture) brings in more light hence the less clear/crisp are, so that's why it's best to go with a small aperture, is that right?
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Sounds like you've got a really good understanding about what we've discussed.
Technically, it isn't so much
amount of light, because you will always get the same amount of light to the sensor/film.
What you are doing, is deciding how you will deliver this light. Think of the shutter...quite literally...as a window painted black so no light can get through. The shutter speed, is you opening this window, and then closing it quickly, to allow a specific amount of light in.
The lens opening is another way of letting light in. The smaller the lens opening, the longer you will have to leave the window open, because you need a specific amount of light in each pic. So, a large lens opening lets in large, "blobs" of light in, while a small lens opening allows smaller, more focused "blobs" of light in. Kind of how focused a laser beam is, when compared to a flashlight.
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So for low light both ISO and aperture have to be taken into consideration?
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Generally...and shutter speed too.... Ideally we would love to shoot at a low iso all the time. Unfortunately, we can't. Indoors, you must decide on what combination you will use...low iso and:
flash
artificial fill light
a tripod and a slow shutter speed, if your subject is still enough.
Or, you bump up your iso, and do what you must. You'll get this down, when you shoot your next couple hundred pix. You will also learn just how slow a speed you can hand hold, without blur. This will also depend on the size of the lens you are using. You're lucky...you can see your results immediately if you've got your computer nearby. When I was a kid, I shot a ton of black and white. I would shoot some pictures, go inside, develop them, print them, and then decide what I did right, and what I did "not so right"...it was a great experience, but this instant stuff makes for a quicker lesson.
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to sum up:
shutter speed - when the priority is for a faster picture meaning less blur
ISO - priority is when there is low light but the higher the ISO the grainer the picture
smaller aperture - when the priority is having crisp photos but shutter speed will be slower hence potential for blur
Is this somewhat right?
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Yes it is...there's a whole lot of stuff going on inside that camera!
One more thing...that word "priority".
When shooting auto, in shutter priority mode, you are demanding that the camera shoot at a certain shutter speed. The camera will choose the correct aperture, based on changing light conditions.
Aperture priority, now that you know about the difference, you demand a certain aperture setting, and the camera will choose the correct shutter speed, based on changing light conditions.
So, outdoors on a bright day, you might demand aperture setting 11, or 16, because you have the ability to use this small (clear) setting. The bright conditions will make it unnecessary to worry about a shutter speed that will be too slow.
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Thanks for the critique! That was awesome. I was going to ask you and Gonzo to critique my shots but forgot to mention so that's great - would love to hear more feedback on the other pics, I won't be offended with any suggestions.
I really, really, really appreciate all the information you have provided. It's incredibly helpful and useful...big hugs to you!
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Hey, I haven't posted anything on these boards that I would consider good quality pix. I post them anyway, because we're showing off our flowers, birds, etc.. It's still nice to see other people's pix. I say, there's no substitute for the quality you get from film, but my buddy tells me that if I printed some of these pix I wasn't so impressed with, they would look much better than they do on my screen.
I'm still learning too...it makes for great conversation. I will never forget the day my best friend/neighbor showed me how to develop pictures. I sat in the darkroom, and watched a picture "appear" on this piece of paper, that was submerged in chemical.
I was hooked!