_sem_

Lives in Pitcairn Pitcairn
Joined on Dec 18, 2008

_sem_'s recent activity

  • Not sure what exactly is sold in 7559 now, see if you find sth useful here: https://www.reddit.com/r/Dell/comments/5jiwcg/psa_the_4k_uhd_3840x2160_displays_in_the_inspiron/ https://www.notebookchec ...
  • Lenses have very different optical formulas even those with the same FL. The way the magnification changes when focussing may be substantially different with different designs. In old lenses ...
  • Only old Tamron 90 models are screw-driven, the newer ones do autofocus. For product photos where the working distance is not an issue, the Nikkor 40 micro may be useful. Due to less relative ...
  • For high magnifications with less hardware, try just reversing a wideangle lens. Can be a standard zoom @wideangle. Set to close focus. Insert extension tubes for more magnification. Meike mk-c-up ...
  • Btw DSLR (Canon) lenses are better for reversing - because of the longer flange distance you get about 2cm more working distance when reversed.

  • Auto aperture comes very handy at high magnifications where light gets scarce. With the lens stopped down all the time, EVF display gets laggy and noisy - if wide-open for aiming you can see better.

  • One for Canon has been also available from Meike for a long while. Sony E mount is news. No idea why they're not available for other mounts with electronic aperture lenses though (including some...

  • Continuous light is great because what you see is what you get. LEDs may provide quite a lot of light at short working distances. On the other hand, at high magnifications with the lens stopped ...
  • Yep this is precisely the issue for us amateurish LR-only users. LR is okay though not exactly perfect, could benefit a lot with certain improvements. But recently most of the development was for ...
  • The former Lightroom CC now rebranded to Classic received a few updates which by Adobe's choice didn't make it into LR6. They could've offered them as incentive for upgrading to LR7. But they ...
  • The bad joke on us LR6 users is that we perceive the CC subscription as a ca 3x price bump rather than as a discount ;( I must say I have zero understanding for companies attempting to secure their ...
  • Yes, but... The subscription may not appear high but it is roughly 3x what I was paying for LR4/6 divided by months of use, many amateurs are likely not willing to pay that much. Plus over years ...
  • Hehe, just what I was making fun of ;) Yet there are lists of patched routers http://www.zdnet.com/article/here-is-every-patch-for-krack-wi-fi-attack-available-right-now/ https://www.windowscentral ...
  • The manufacturer of your ISP's router will also be happy to claim that the vulnerability is client-side and that their router is unaffected. I guess it will take some more time to tell. My laptop ...
  • Not sure. What is sure that a gazillion of devices including home cable routers, public hotspots and phones will remain unpatched (I understand this is mainly a client-side problem but that ...
  • Actually I don't think this has anything to do with you personally. Rather with M$ who technically implemented support for wide-gamut and hi-res but literally "implemented support", resulting in ...
  • I'm afraid it is the issue. The metal does bend, specifically the three springs in the mount do. You can see the same effect with steel mounts of lenses, but it takes much more torque to open the ...
  • Got 15" UHD touch XPS. I can see the improved sharpnes and richer gamut, dislike glossyness. I think many folks suffer with scaling issues and oversaturated colors because they don't dig CM... And ...
  • AFAIK Chrome is color-managed but only for the primary display. Color-managed applications should work fine, so best to find CM ones for everything you do. For non-CM applications, it should go via ...
  • Yes but with longer FL the effect of a certain length of extension is less pronounced. Kenko mounts are not rigid enough because they are chrome-plated brass. There is a longer older Nikon ...
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_sem_ has not added any gear yet.
Total messages 4938
Threads started 41
Last post 3 days ago
Total comments 206
Total likes 149
Last post 2 weeks ago
Total reviews 0
Entries 4
Votes cast 67
Last entry Oct 9, 2011
Photos uploaded 90
Last upload Apr 19, 2010