How to convert 60x optical zoom, 120x Dynamic Fine Zoom to mm: I was looking at the Nikon Coolpix B700 and would like to convert 60x optical zoom, 120x Dynamic Fine Zoom to mm. Can...

maryo Loc: Santa fe

I was looking at the Nikon Coolpix B700 and would like to convert 60x optical zoom, 120x Dynamic Fine Zoom to mm.
Can anyone do the math? I noticed that it shhos/saves in Raw which I like.
Thanks - smeggy

mas24 Loc: Southern CA

The Canon SX60 is similar.

big-guy Loc: Peterborough Ontario Canada

That number is very misleading because it doesn't give you a starting point. Basically you take the widest angle the camera can give you and multiply that by 60. So if your cameras widest angle is 16 mm then you calculate 16x60 to get the 35 mm equivalent = 960 mm. Now your buddies camera could also have 60x zoom but his cameras widest angle is 24 mm so he calculates 24x60 and gets 1440 mm. Now you know the rest of the story.

JPL

smeggy wrote:

I was looking at the Nikon Coolpix B700 and would like to convert 60x optical zoom, 120x Dynamic Fine Zoom to mm.
Can anyone do the math? I noticed that it shhos/saves in Raw which I like.
Thanks - smeggy

It is easiest to look this up on the Nikon website since there is no fixed conversion factor for zoom to mm. Nikon says this "4.3-258 mm (angle of view equivalent to that of 24-1440 mm lens in 35mm [135] format)"

So it is 4.3 - 258 mm and the 120x zoom will extend that to 516 mm

MT Shooter Loc: Montana

smeggy wrote:

I was looking at the Nikon Coolpix B700 and would like to convert 60x optical zoom, 120x Dynamic Fine Zoom to mm.
Can anyone do the math? I noticed that it shhos/saves in Raw which I like.
Thanks - smeggy

Look on the camera, its printed on the lens.

mas24 Loc: Southern CA

mas24 wrote:

The Canon SX60 is similar.

I get it now. The Canon SX60 is a 65X fixed lens. It has a minimum wide angle of 21mm. Therefore, you multiply 21 X 65 = 1365mm. Which is the maximum focal range of that Bridge Camera. The SX60. A very good camera that also shoots JPEG and RAW. And has 16 megapixels.

maryo Loc: Santa fe

i don't have the camera - just looking to purchase.

mas24 Loc: Southern CA

big-guy wrote:

That number is very misleading because it doesn't give you a starting point. Basically you take the widest angle the camera can give you and multiply that by 60. So if your cameras widest angle is 16 mm then you calculate 16x60 to get the 35 mm equivalent = 960 mm. Now your buddies camera could also have 60x zoom but his cameras widest angle is 24 mm so he calculates 24x60 and gets 1440 mm. Now you know the rest of the story.

The Reviews and Specs of Bridge and Compact cameras with fixed lenses, do tell you the minimum to maximum focal ranges. Just not how it is determined. Thanks for the formula.

rehess Loc: South Bend, Indiana, USA

MT Shooter wrote:

Look on the camera, its printed on the lens.

I don't know about this camera, but camera manufacturers sometimes print "35mm equivalent", rather than actual range, on the lens .... thereby confusing the uninformed.