Tag: constant aperture

  • Review: Sony SEL2470Z

    Review: Sony SEL2470Z

    Introduction

    In short, the Sony SEL2470Z is a Zeiss constant aperture zoom lens with dust and moisture resistance for the Sony E-mount full-frame cameras. The lens comes with a “matched” price tag (SGD 1,599).

    SEL2470Z
    SEL2470Z
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  • Photography Tips: 5 Reasons to Own a Zoom Lens

    Photography Tips: 5 Reasons to Own a Zoom Lens

    Zoom Lens
    Sony SEL2470Z

    Zoom lens usually consists of one focus ring and one zoom ring, and the focal length indicator as shown above. 

    We discussed the reasons to own a prime lens in the last post – 5 Reasons to Own a Prime Lens, but that does not mean we should always use prime lens. Today I’m going to tell you why we should get a zoom lens as well.

    1. Convenience

    Would you like to bring along your whole prime lens collection that covering 24 mm to 200mm (5 to 7 lenses) when traveling? Or do you prefer to travel in a lightweight and enjoy your trip? If that is the case, a lens like 24-105mm standard zoom or 18-200 mm full-range zoom is the ideal choice. Of course, I assumed you did not take the constant F2.8 cannon-size zoom into account.

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  • Photography Tips: 5 Reasons to Own a Prime Lens

    Photography Tips: 5 Reasons to Own a Prime Lens

    The last photography tips discussed about 10 Factors to be Considered Before Buying a Lens, and basically, we know that there are two types of lenses, the prime lens, and the zoom lens.

    SEL55F18Z
    Sony SEL55F18Z

    Above is the Sony Zeiss SEL55F18Z prime lens, which provides one wide and smooth focus ring. You don’t get the second zoom ring here because it does not change the focal length!

    Many photography amateurs and professionals are in love with the prime lens or even insist on using it whenever possible. However, many people who just migrated to interchangeable-lens-camera (ILC) are intimidated by the prime lens. It is because we have to move closer or get away from our subject physically. And we will think, “it is for professional use, not for me.”

    So let’s get rid of that mindset. We will find out why so many people are in love in the prime lens in today’s post.

    1. Fast Prime

    We always hear people talk about “fast prime,” so what is it? The prime lens usually comes with a larger aperture like F1.8, F1.4, or even F1.2 that we never see on any typical zoom lens (usually we see the zoom lens comes with the max aperture at F2.8). A larger aperture allows more light to hit the image sensor in a shorter time, which means we can use a faster shutter speed to avoid any motion blur. It is handy when we are shooting in the low-light scene.

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