Long lens for my GX8 -- or just crop from 20MP?

Discussion in 'Native Lenses' started by nsu068, Jul 3, 2016.

  1. nsu068

    nsu068 New to Mu-43

    Apr 30, 2016
    Nagoya, Japan
    Hi guys, I need an opinion about a long lens choice for my GX8:

    I started shooting the GX8 and 12-35mm lens about a month ago, absolutely loving it. I was planning to add a long lens to the kit sooner or later, because I really like the compressed perspective of landscape/cityscape from a telephoto lens. I was tossed between the 45-150mm or 14-140mm lens. The 14-140 came up to mind as they both have the same weight, and I see no reason to have more lens swap with the 45-150mm lens.

    But then I was also thinking: "hey why not get a long fast prime, let's say 42.5 or 45mm lens, and use the 20MP from the GX8, and crop as needed?"

    The only cons of the 14-140mm that I can think of, is that there will be days when I struggle to choose between 12-35 or 14-140 (not going to carry both!).

    I hope I made sense. How would you approach a situation like this? Any thoughtful comments would be appreciated, thanks!
  2. b_rubenstein

    b_rubenstein Mu-43 All-Pro

    Mar 20, 2012
    Melbourne, FL
    To get the same resolution from a 42.5 cropped to the field of view of a 140, the resolution of the 42.5 would have to be 3x that of the 140: it isn't.
    • Agree Agree x 1
  3. NigelD

    NigelD Mu-43 Regular

    Sep 23, 2015
    Personally I wouldn't be thinking about a prime - but that just reflects the images I take with my set up. I bought the 12-35 and also the 35-100, in order to give me range and flexibility for holiday and street stuff. I'll add a couple of primes later on.
  4. D7k1

    D7k1 Mu-43 Top Veteran Subscribing Member

    Nov 18, 2013
    If I were going long (our definition of long might be different) I go with either the 75-300 Oly or the PL100-400. The Oly is small and very good for most subjects and the PL100-400 is extremely good IMHO. Don't discount the f4-5.6 version of the the 35-100 as it is very good at the used prices.
  5. Drdave944

    Drdave944 Mu-43 Top Veteran Subscribing Member

    Feb 2, 2012
    Why not the Panny f 2.8 35-100. It is fairly light. And it gives double IS with the GX8. This would give a truly killer combo.
    • Agree Agree x 2
  6. tkbslc

    tkbslc Mu-43 Hall of Famer

    If you crop a 20MP image taken with a 42mm to the same FOV as a 140mm, you will be left with about 2MP of resolution and the noise performance of an average cell phone camera.
    • Agree Agree x 2
  7. oldracer

    oldracer Mu-43 Hall of Famer Subscribing Member

    Oct 1, 2010
    Try a few of your proposed crops and I think you'll answer your own question.

    The only way they'll get my 14-140mm lens is to pry it from my cold, dead, hands. (Apologies to Charlton Heston) Your issue with the 12-35 vs the 14-140 is easily solved. Ditch the kit lens and replace it with a 9-18mm (my choice) or the 12/2. These are both very small lenses and readily pocketable.

    For longer, I have had the 100-300mm and now have a recently-arrived 100-400mm bought specifically for an African trip this month. I'm pretty sure I'll be selling the 100-400 when I return, though. I rarely have need of its long focal length and it is so big and heavy that it almost makes a joke of the M43 "small and light weight" theory.
    • Agree Agree x 1
  8. burdickjp

    burdickjp Mu-43 Veteran

    Feb 25, 2013
    It doesn't look like Panasonic offers the 14-140 weather sealed. That's a shame because I really like my E-M5ii with the Oly 14-150. It's slow, but for architecture from a tripod it's fine.

    Sent from my SM-G900M using Tapatalk
  9. wjiang

    wjiang Mu-43 Hall of Famer Subscribing Member

    It's a GX8, with IBIS. Unless you need stabilised video, the sealed 14-150 will work just fine.
    • Like Like x 1
  10. CyVan

    CyVan Mu-43 Top Veteran Subscribing Member

    Mar 9, 2016
    I agree. I loooove my 14-140 , it always surprises me with the quality of pics it can take. However I think you're mixing up his lenses, I think he has the 12-35 f2.8 pro , not the 12-32mm kit lens. Considering the size of the 12-35 f2.8 I can see why he wouldn't want to carry both :)
    • Agree Agree x 1
  11. b_rubenstein

    b_rubenstein Mu-43 All-Pro

    Mar 20, 2012
    Melbourne, FL
    I have a GX8 and yes, it has IBIS, but it's only about as effective as the IBIS in the old Olympus E-PL2 (not very).
  12. Phocal

    Phocal Mu-43 Hall of Famer

    Jan 3, 2014
    Sell the GX8 and get an EM1 to pair with the ZD 150mm f/2.0 :dance4:
  13. nsu068

    nsu068 New to Mu-43

    Apr 30, 2016
    Nagoya, Japan
    Thanks guys, you guys really got me convinced on the 14-140!
    Another alternative kit that I'm thinking (let's say for travel) is 14-140 with the Leica 15/1.7. They do overlap in focal length, but then I do need a bright lens sometimes. Of course, there's always time and place for everything, and there still will be times when I need the 12-35 2.8 instead of the aforementioned combo.
  14. CyVan

    CyVan Mu-43 Top Veteran Subscribing Member

    Mar 9, 2016
    yeah thats a good idea. My walk-around kit used to be the 14-140mm for general purpose daylight shooting and an Oly 25mm f.18 for lowlight and artistic close up shots with lots of bokeh. Ah the simple days of a 2 lens setup :p
    • Like Like x 1
  15. drd1135

    drd1135 Zen Snapshooter Subscribing Member

    Mar 17, 2011
    Southwest Virginia
    The Panasonic 35-100 4-5.6 is a slow but sharp lens. It's barely larger than a prime and light. I use mine quite a bit because it fits so well on the EM5 ii and the E-PL7.
  16. CyVan

    CyVan Mu-43 Top Veteran Subscribing Member

    Mar 9, 2016
    yeah I continue to be amazed by what this supposedly 'lowly zoom' lens can produce. GX8, 14-140mm @140mm f5.6 iso800
  17. MJL

    MJL Mu-43 Veteran Subscribing Member

    Feb 24, 2016
    Katikati, New Zealand
    If the OP has the 12-35 F 2.8 then I cannot see him being happy with a slow lens or the 14-140 (as good as they may be).

    I do not know what all of the intended use of the "long lens" will be but a few options come to mind. Add the 35-100 F 2.8 lens which complements the 12-35 F2.8. It is expensive but a good all-round lens, and a focal lenght that was much liked in film camera's (70-200).

    If the need is for just to have a superb lens for portrait outdoors then the legendary Olympus 75mm F1.8. If wanting to take portraits indoors then the Panasonic 42.5mm F1.7 is one lens to be seriously considered. If wanting a slightly longer focal length but not wanting to spend excessive money then the Sigma 60mm F2.8 gives one great performance for little money, sharpness is up there with the 35-100 F2.8, the 75mm F1.8.

    You have Panasonic camera and check out Panasonic's Ex Tele which uses only the centre of the sensor (halving the number of Mpx from 16 Mpx to 8Mpx without upsampling etc. ). A 8 Mpx image can still be printed to A3 and the focal length changes by a factor 1.4.