No, you'll get different results since the zoom will be longer and have more elements.Don't wait for the Nikon D-whatever, have fun now!http://www.flickr.com/photos/j_wijnands/..
I see. Different in what way? Is more elements equal to less light or is there some way to tell which lens is better in low light conditions by looking at the specs?..
Lets say I have a pretty standard normal zoom (17-55/ > 3.5-6.5). I set it at 50, aperture 4.5 and fire away.I then take a prime, 50/1.2 andset that to aperture 4.5 and take the very same shot.If I set all settings to exactly the same (ISO, shutterspeed, exposure compensation etc).
Will I end up with two similar pictures> regarding DoF and brightness.
I don't see why not..
The photos will still look different but not for reasons of aperture, focal length etc..
Androohttp://Androo.smugmug.com..
Any fast prime will be better than a zoom. They tend to be shorter and have less glass so more light will reach your film/sensor.Don't wait for the Nikon D-whatever, have fun now!http://www.flickr.com/photos/j_wijnands/..
Wijnands wrote:.
Any fast prime will be better than a zoom. They tend to be shorter> and have less glass so more light will reach your film/sensor..
The OP asked if the zoom and prime will be the same at the same aperture and focal length and I can't see why they wouldn't be basically the same in terms of light collection and depth of field..
Androohttp://Androo.smugmug.com..
DoF yes, light collection, no. At least, that's my experience. If you own any primes do give it a try yourself.Don't wait for the Nikon D-whatever, have fun now!http://www.flickr.com/photos/j_wijnands/..
If you take 2 lenses, each set at 50mm, you should have the same resulting photo. The DOF will not change because both lenses are set at 50mm and both are set at the same aperture. You shouldn't have any change with it being a zoom versus a prime. So, DOF is the same..
Consider if you used a handheld meter and not your in-camera meter. The handheld is going to tell you the how much light is present and what settings to use. I guess if you are using a very cheap zoom lens and then put on a Canon L prime, you might notice a tiny difference, but in normal usage, you shouldn't notice anything.Lyle Collins.
Http://www.flickr.com/photos/lyleuga..
The answer is nonsense, and he is clueless..
You are right..
A 50mm lens, or a zoom lens set at the 50mm position, both set so that the aperture is the same f4.5 in your example and with the shutter at the same speed, and the ISO the same, pointed at the same subject, will yield a shot that is almost identical. "Almost" because there might be a tiny difference in sharpness or distortion, but nothing you would see with the naked eye on an 8x10 print..
Where diffferences come in relate to the lgiht changing. If it gets darker, you'll need a combination of slower shutter speeds and wider apertures..
So with the zoom, lets assume the maximum aperture at 50mm is f4.5. With the 50mm prime, the maximum in your example is f1.2.
So, as it gets darker, you need to slow the shutter speed with the zoom lens, to let in more light..
With the priime, you can chnage the aperture to f4 and then f3.5, and then 2.8, and 2, and 1.4, while keeping the same shutter speed..
EAch time you cange the aperture, you'll alter the depth of field..
IF IT GETS BRIGHTER... you can change the zoom from f4.5 to f5.6 to f8, and change the prime the same way, and the pictures will again be almost identical..
BAK..
Saved me the thankless task of correcting the record. I do so love this *special place*... (c:.
Rob.
Everyone, everywhere, has to do everything for a first time. There is no failure in failure, only in failing to learn...
Disregarding Image Quality, you will get the exact same result, regardless whether you are using a prime or a zoom lens..
Cheersbecksi..
Thanks for the quick and great replies! This place never ceases to amaze me...
OK, you're right, whatever.Don't wait for the Nikon D-whatever, have fun now!http://www.flickr.com/photos/j_wijnands/..