Jump to content

Nextguitar

Members
  • Content Count

    9
  • Joined

  • Last visited

Reputation Activity

  1. Like
    Nextguitar got a reaction from pewdoc in No sharp pictures with A6000! Need help :(   
    Steve Perry has a great video on how to use back button AF. I’ve started using it. I started photography long ago with all manual focus gear, so separating the focus operation from exposure seems more natural to me.
     
  2. Thanks
    Nextguitar reacted to Pieter in SONY a6400 getting overexposed at lowest iso in daylight ! ! Help   
    That's a stupid software thing and becomes especially apparent under those conditions: the in-camera vignetting correction does not seem to be gradual but compensates in discrete steps away from the center. When boosting the in-camera corrected image (either in post or by extremely high ISO in-camera), these concentric rings become very clear. I believe the in-camera shading compensation is baked into the RAW-file if you do photography, which renders an otherwise nice photo useless.
    I always disable in-camera shading compensation (= vignetting correction) for this very reason. And because I often like a bit of vignette in my shots. If I don't want vignetting for some reason, I stop down the lens or correct in post.
  3. Thanks
    Nextguitar reacted to Pieter in To use a filter or not to use a filter on a lens?   
    I'm using filters on my lenses for the following reasons:
     - If you buy good quality filters, the impact on the optical quality of the lens in my opinion is negligible (like 0.3% light loss and almost zero additional ghosting/flare).
     - I clean my lenses quite often. Even when first blowing/brushing off dust before a wet wipe, you'll inadvertedly cause abrasion on the front element. In time, the degradation of the coating on this element will have adverse effects on image quality as well. Replacing a front filter is cheap, replacing a front lens element not so much.
     - Don't expect the filter glass to protect your front element from a direct impact with a solid object, but having some metal ring protruding beyond the front element certainly helps in keeping it from harm. A lot of impact energy can be dissipated by the deformation of the filter ring before wrecking the front of your lens. Always keeping the lens hood on also helps here.
    - Resale value: a minor scratch on the front element (e.g. by accidentally rubbing a grain of sand over the lens while cleaning it) won't affect image quality much, but it severely affects resale value.
    Have a read here, you might find it interesting:
    https://www.lensrentals.com/blog/2017/06/the-comprehensive-ranking-of-the-major-uv-filters-on-the-market/
×
×
  • Create New...