Tag Archives: optical

Nikon's New COOLPIX P-Series Pair Packs a Potent Punch of Optical Excellence …

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Nikon's New COOLPIX P-Series Pair Packs a Potent Punch of Optical Excellence …
1, 2012 — /PRNewswire/ — Today, Nikon Inc. introduced two new COOLPIX cameras into the P-series, providing photographers with amazing optics from compact offerings for their next adventure-packed outing. Breaking the zoom barrier, the new COOLPIX …
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Nikon D300s and D700 discontinued
There is already much speculation and some leaks on what's expected to be the full-frame D800 dSLR with a rumored February 8 release, but details are scant at this point. Currently, there's still no news on a D300s' successor though. With the Camera …
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Sony Alpha NEX-7 review
… but we're finally beginning to see compact cameras that are every bit as good as digital SLRs. The journey started with Panasonic and Olympus' Micro Four Thirds system, followed by rival compact system cameras from Samsung, Sony, Pentax and Nikon.
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Does anyone know what a digital SLR camera lens of 40mm-150mm is equal to in a optical zoom?

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Question by rm4dh: Does anyone know what a digital SLR camera lens of 40mm-150mm is equal to in a optical zoom?
Does anyone know what a digital SLR camera lens of 40mm-150mm is equal to in a optical zoom in a digital point and shoot camera?

Best answer:

Answer by Rob Nock
You are comparing to things that have little relevance. The 40mm – 150mm lens IS an Optical Zoom of 150 / 40 or 3.75x zoom ratio. However the sensors on DSLRs are many time larger so the recorded image is much bigger while the equivalent magnification is lower. For example a 4mm-40mm lens on a P&S would be a 10x Zoom (40 / 4 = 10x) but the image would be tiny compared to one made with the DSLR 40 – 150 zoom.

Without knowing the sensor size of the P&S there is no way to determine what the equivalent effective MAGNIFICATION is but typical P&S sensors are about one quarter of the size of those in DSLRs so magnification would probably be about 4 times greater.

The only valid way to compare the lenses recording capability would be to check the Angle Of View at the minimum and maximum zoom ranges of each lens.

What do you think? Answer below!