Ching-Kuang Shene

Lives in United States Houghton, MI, United States
Has a website at http://www.cs.mtu.edu/~shene
Joined on Jan 21, 2000

Ching-Kuang Shene's recent activity

  • I agree.  The Nikon 85/2 is a dog, much worse than the 85/1.8 My favorite  MF 100mm is CY 100mm f/2 Planar.  I have two more favorites but AF ones: Nikon AF-D 105mm f/2 DC and later Nikon AFS 105mm ...
  • Here are the images shot with these lenses at 30m and 50m. Makinon 30m Ohnar 30m Osawa 30m Russian 3M-7K 30m Samyang 30m Soligor 30m Spiratone 30m TOU/FIVE STAR 30m Tamron SP 350mm f/5.6 30m Tamron ...
  • I started playing mirror (Newton type) lens since my elementary school days in my school's physics lab. Moreover, my (Chinese) name has the word "mirror" in it. :-) Sample variation cannot be avoid ...
  • Alan, Your 19/3.8 is a later Vivitar lens, perhaps in the late 1980's.  In fact, after the mid 1980's, most if not all Vivitar lenses, even those Series 1 lenses, are not good.  I was referring to ...
  • Leica Elmar 90mm f/4 later non-M version.  If you have sufficient budget and patient enough, try the triplet version.  The triplet version is the last Elmar 90mm f/4.  After that no more Elmar ...
  • Here is another odd lens that I rarely used.  It is not because its relatively uncommon focal length.  Instead, it is because mounting it to a Gimbal head proves to be a great headache.  What ...
  • I agree.  Vivitar lenses are always good enough or very good enough but never get into the top places.  I have at least Vivitar 200mm lenses with various max aperture.  The better one always have ...
  • This is a personal stake. As I said, if you discuss with a rationale and evidence, this discussion would become meaningful. I made it very clear that " This is a very good lens although not ...
  • Well, I perhaps have handled more lenses than you have, although I am not very certain.  All professional photographers know the differences between a general lens and a macro lens, each of them ...
  • " You can disagree all you want "  Same to you.  Posting a photo DOES NOT prove anything.  It is very much like I take a photo of an AIS lens inside and insist they are not more solid.   Lens are ...
  • Funny comment again.  If a macro 100mm lens and a general 100mm lens can be used interchangeably, then why were nearly all lens manufactures made two: a general 100mm and a 100mm macro? ...
  • Well.  I have to disagree strongly.  These E-series lenses may be stronger than today's cheap kit lenses.  To tell you the truth, if you can find a good one today, this one has survived for more ...
  • Nikon 100mm f/2.8 Series E.  This is a very good lens although not excellent (because it was built for the lower end EM SLR); however, it is very cheap see here .  Buy the one with a silver ring ...
  • Ten years ago (2008) when mirrorless bodies were still no where to be found, I used Hektor's lens head and some tubes and/or bellows and put it on a Nikon DSLR D50 for fun.  This is not a ...
  • Tom, Thanks.  My interests in lenses may be very different from those of many here.  I have a kind of formal training in optics, in particular in photographic lenses.  So, my interests in lens ...
  • Flex, I have the lens you mentioned above.  This is the first version of simple 800/8 perhaps in the mid 1960 to early 1970.  However, this is a doublet rather than triplet.  This lens perhaps was ...
  • I have this lens in hand for nearly (or even over) a decade.  I did not use it much because of a serious problem as shown below.  Asahi (nor Pentax)  released its first SLR with pentaprism Asahi ...
  • I have many versions usually coming with a Contax and/or Pentacon camera.  But, none of them would be excellent although all of them are good enough.  The aperture mechanism of this lens, ...
  • Replied in Good call!
    It is not an issue more common on the telephoto side.  In fact, I mentioned Tokina 90/2.5, Nikon 50-135 and Nikon 100-300 because I have to have these lenses on my bench while I was writing.  It ...
  • Not all M42 to NEX adapters would have the described vignetting problem.  Those short ones rarely exhibit problem.  However, the longer ones whose lengths cover from shorter than the needed M42 to ...
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