dslr camera lens number meaning image
lollerskat
I am planning to buy a dSLR camera soon, the Rebel XSi and because it has a APS-C sensor, there will be a crop factor of 1.6x when I use an EF lens for it. I am told to invest in EF lenses but I am worried if the crop factor will have a large impact on it. What if I wanted a wide angle lens? How much will the crop factor impact the ability of this wide-angle lens?
Answer
A great answer by Pooky, my compliments to him on such a clear explanation of the visual effect of this - it's a good question too.
If you know about lenses in 35mm terms the 1.6 factor will make a big difference:
10mm > (acts like) 16mm (in comparison to 35mm)
20mm > 32mm
28mm > 45mm (so a normally pretty wide lens on a 35mm camera will act like a standard 50mm!)
50mm > 80mm (a standard 35mm lens would act like a moderate telephoto / portrait type lens)
75mm > 120mm
This means many digital SLR digital photographers don't have anything more than a moderately wide lens in their armoury, this is a very limiting factor for a surprising number of photographic situations - interiors, candid work in crowded spaces, low light situations, places where you can't step back any further, etc.
The implication is that you need to think very differently for what would normally (in 35mm terms) be considered a very wide lens.. and what may initially seem really wide, isn't at all!
To put this into context, this is not going to worry a wildlife, sports, or paparazzi / surveillance photographer at all. For most other purposes it's like losing a key part of your armoury.
I've been professional for 18 years now and all but a few dozen images out of many thousands were taken on lenses under 100mm in 35mm terms. It's subject driven but I'd guess I use wide lenses probably around 15-30% of the time.
A great answer by Pooky, my compliments to him on such a clear explanation of the visual effect of this - it's a good question too.
If you know about lenses in 35mm terms the 1.6 factor will make a big difference:
10mm > (acts like) 16mm (in comparison to 35mm)
20mm > 32mm
28mm > 45mm (so a normally pretty wide lens on a 35mm camera will act like a standard 50mm!)
50mm > 80mm (a standard 35mm lens would act like a moderate telephoto / portrait type lens)
75mm > 120mm
This means many digital SLR digital photographers don't have anything more than a moderately wide lens in their armoury, this is a very limiting factor for a surprising number of photographic situations - interiors, candid work in crowded spaces, low light situations, places where you can't step back any further, etc.
The implication is that you need to think very differently for what would normally (in 35mm terms) be considered a very wide lens.. and what may initially seem really wide, isn't at all!
To put this into context, this is not going to worry a wildlife, sports, or paparazzi / surveillance photographer at all. For most other purposes it's like losing a key part of your armoury.
I've been professional for 18 years now and all but a few dozen images out of many thousands were taken on lenses under 100mm in 35mm terms. It's subject driven but I'd guess I use wide lenses probably around 15-30% of the time.
How to make use of ultrazoom 30x point nd shoot camera effectively?
princess
1)How to make use of ultrazoom 30x point nd shoot camera effectively?
2)How to take cool pics (esp. macros) like dslr cameras with a point nd shoot camera?
Thank you so much
Tnx fhotoace
the camera s olympus sp 800 uz!!
Answer
It would be helpful in the future to tell us what camera brand and model number you have so we can answer you question more definitively. Since there is only one camera with a 30x optical zoom, I will have to assume that you have the Fujifilm FinePix HS10. Is that right?
As with any zoom lens that reaches beyond about 200 mm (Yours can reach out to 720 mm, 35 mm equivalent), you will at some point need a tripod or other means to secure the camera to avoid blurry images caused by camera movement.
Shooting from 24 mm (nice wide angle) to 720 mm (super telephoto) will give you a lot of versatility, but require you to spend some time learning how to use the camera under various lighting conditions and using the various focal lengths.
Macro is a different issue. If you really mean shooting closeup photos, then the HS-10 can focus with the lens 1 cm from the subject. Depending upon which focal length you choose, the magnification will vary.
A true macro lens, has markings on its lens barrel to allow the user the specify specific image to subject ratios like 1:1, 1:2, 1:3 and 1:4. These exact ratios are important when shooting forensic, medical and scientific assignments, but are not critical when shooting close ups of your favorite object.
It would be helpful in the future to tell us what camera brand and model number you have so we can answer you question more definitively. Since there is only one camera with a 30x optical zoom, I will have to assume that you have the Fujifilm FinePix HS10. Is that right?
As with any zoom lens that reaches beyond about 200 mm (Yours can reach out to 720 mm, 35 mm equivalent), you will at some point need a tripod or other means to secure the camera to avoid blurry images caused by camera movement.
Shooting from 24 mm (nice wide angle) to 720 mm (super telephoto) will give you a lot of versatility, but require you to spend some time learning how to use the camera under various lighting conditions and using the various focal lengths.
Macro is a different issue. If you really mean shooting closeup photos, then the HS-10 can focus with the lens 1 cm from the subject. Depending upon which focal length you choose, the magnification will vary.
A true macro lens, has markings on its lens barrel to allow the user the specify specific image to subject ratios like 1:1, 1:2, 1:3 and 1:4. These exact ratios are important when shooting forensic, medical and scientific assignments, but are not critical when shooting close ups of your favorite object.
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