dslr camera lens magnification image
avi
For e.g. an 8x optical zoom in a camera and an 8x magnification in a 8x40 binocular?? Is there any difference between these 2, or are they the same??
Answer
It will not be the same. Optical zoom on a camera depends on where you start from. Most point and shoot cameras will start from wide angle and go to telephoto. Lets say your cameras lens goes from 6mm to 48mm. This is an 8x zoom. My camera may go from 10mm to 80mm. Still an 8x zoom. My camera would have less wide angle ability but more telephoto ability.
When you look at SLR's there is no X zoom rating. Lenses are measured in milimeters. You can have several different lenses that all have the same zoom rating. For example the kit lens that comes with most entry level DSLR's is an 18-55mm. Roughly a 3x zoom. A 100-300mm lens is also a 3x zoom. These two lenses will have very different fields of view though. The 18-55 goes from wide angle to slight telephoto while the 100-300 is a long telephoto lens. A 55-250mm lens is a 4.5x zoom but wont have the telephoto ability of a 100-300mm which is only a 3x zoom.
It will not be the same. Optical zoom on a camera depends on where you start from. Most point and shoot cameras will start from wide angle and go to telephoto. Lets say your cameras lens goes from 6mm to 48mm. This is an 8x zoom. My camera may go from 10mm to 80mm. Still an 8x zoom. My camera would have less wide angle ability but more telephoto ability.
When you look at SLR's there is no X zoom rating. Lenses are measured in milimeters. You can have several different lenses that all have the same zoom rating. For example the kit lens that comes with most entry level DSLR's is an 18-55mm. Roughly a 3x zoom. A 100-300mm lens is also a 3x zoom. These two lenses will have very different fields of view though. The 18-55 goes from wide angle to slight telephoto while the 100-300 is a long telephoto lens. A 55-250mm lens is a 4.5x zoom but wont have the telephoto ability of a 100-300mm which is only a 3x zoom.
What bridge camera (slr-like) can create shallow depth of field for portrait?
cookie
Is there any bridge camera/slr-like camera that is capable of shooting portrait with shallow depth of field?
Please give me some suggestion.
I am hoping to get a bridge camera to create that kind of effect. The reason I don't want an DSLR is because of my budget. I could get an entry level DSLR, some people argue the price is closer to a bridge camera. But after adding some decent lens, it will be way more expensive than a bridge camera. The default lens that comes with an SLR usually doesn't do much.
Answer
You're talking about depth of field. Only two things affect depth of field magnification and aperture. The higher the magnification the shallower the depth of field, and the wider the aperture (the lower the f number) also reduces depth of field.
To maximise the effect (called selective focus) with your camera use maximum zoom and get as close as possible, both raise the magnification.
To make your camera use the widest aperture use as low a light as possible, unless your camera has Aperture Priority in which case use that and select the lowest f number.
One of the drawback to compacts and bridge cameras is their small sensor (which reduces the magnification by cropping). It's all so much easier with a DSLR and a fast lens. One of the reason why professionals buy expensive 70 - 200mm f2.8 lenses is to magnify this effect.
Go with a DSLR then you can always save for the lenses which make this effect easier, the larger sensor also helps too, they're just so much more versatile than a bridge camera. You can put the camera on on an astronomical telescope and photograph the heavens or on a microscope and photograph cells, and everything in between.
It can be done in Photoshop or similar, but its a pain as you have to accurately select what you don't want to be blurred, its much easier to do it in camera.
Chris
You're talking about depth of field. Only two things affect depth of field magnification and aperture. The higher the magnification the shallower the depth of field, and the wider the aperture (the lower the f number) also reduces depth of field.
To maximise the effect (called selective focus) with your camera use maximum zoom and get as close as possible, both raise the magnification.
To make your camera use the widest aperture use as low a light as possible, unless your camera has Aperture Priority in which case use that and select the lowest f number.
One of the drawback to compacts and bridge cameras is their small sensor (which reduces the magnification by cropping). It's all so much easier with a DSLR and a fast lens. One of the reason why professionals buy expensive 70 - 200mm f2.8 lenses is to magnify this effect.
Go with a DSLR then you can always save for the lenses which make this effect easier, the larger sensor also helps too, they're just so much more versatile than a bridge camera. You can put the camera on on an astronomical telescope and photograph the heavens or on a microscope and photograph cells, and everything in between.
It can be done in Photoshop or similar, but its a pain as you have to accurately select what you don't want to be blurred, its much easier to do it in camera.
Chris
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