RF lenses vs SLR lenses on A7 (II)

Discussion in 'Adapted Lenses' started by soeren, Feb 14, 2015.

  1. soeren

    soeren TalkEmount Top Veteran

    Dec 12, 2014
    Næstved, Denmark
    I really like my A6000 mostly using my Nikon glass especially the 25mm zeiss, 35/2 Ais and 55/3,5 Ais. Unfortunately Im under severe GAS attack lusting for a fullframe compact kit for everyday carry around. How would a 7(II) with some voigtländer glass e.g. 12, 21, 40 and (70mm) work, look and feel weight- and bulkwise compared to some similar Nikon glass like the ones mentioned + a 105mm and perhaps a superwide. I have no idea how big or small the voigtländers are but according to the showcases here they seem to perform good.
    Best regards
  2. Bimjo

    Bimjo Super Moderator Subscribing Member

    Oct 28, 2011
    Washington State
    The 12 & 21 may show some degree of magenta fringing in the corners/extreme edges of the frame. Depending on who you believe the 21 may or may not smear the corners, the 12 probably not. The slower CV RF lenses are tiny compared to SLR lenses. But (you knew there was a but, right?), they are not particularly light for their size. They are solid, all metal construction.

    Throw a bunch in your bag and it doesn't take long to get to SLR weight levels if you drag them all along. Discipline is the key- only take the lenses you know you'll use for that shoot or resign yourself to humping the heavy bag.

    My CV lenses (12, 21, 28, 35, 50) and my M-Rokkor 90 are without a doubt the sharpest lenses I own (on my 5N). As always, YMMV. ;) 
  3. serhan

    serhan TalkEmount All-Pro

    Aug 27, 2011
    Wide side is problem with rf lenses esp with biogon designs. Zeiss manage to refigure biogon 35mm f2 as Loxia 35mm f2 but that is where the issues are.

    CV12 works with Adobe corrections. It has high vignetting and some color shift, but no smearing. You can check CV 12mm post:

    My other recommendation is new CV 15mm ver 3 which is just released, supposed to be redesigned for digital sensors:

    CV 21mm 1.8 works, maybe a little color shift, again correctable with Adobe profile. The slower/smaller f4 lens doesn't. Again reviews on 21mm 1.8:

    Instead of these 2, Sony 16-35mm might be a good option as you can see in the above reviews, 16-21 range is very good but not small as rf lenses but it replaces a couple of them...

    There is no problem 40mm and above ranges.Again CV 35mm/40mm 1.4, 50 1.5, 75mm 1.8/2.5 lenses are good with A7(II/R)'s... RF lenses mfd's are long so I recommend one of the close up adapters:

    Also you can use Contax g 45mm & 90mm lenses which are good on A7's:
    • Like Like x 4
  4. soeren

    soeren TalkEmount Top Veteran

    Dec 12, 2014
    Næstved, Denmark
    Thanks Bimjo and Serhan. Wow so many links, how did they escape me on my own search....... drool :) 
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