On 12/15/2015 6:45 AM, Rick Beckrich wrote:
+2 Brian!
I've got the Viv 19/35, decent but seldom take it with me. It's a huge
thing... So I usually try to step back with the Zuiko 24.
I used to have the Viv 19-35 that Rick now has and used it a fair amount on OMs, before moving to Canon for DSLRs. I
thought it a pretty decent lens; not up to OMZ 18, 21, 24, 28 and 35, but far more convenient for all but quite serious
shooting for me than carrying 3-5 primes and doing a lot of switching.
PopPhoto agreed:
"*In the lab.* SQF data indicates good overall performance and commendable consistency across the focal-length range.
However, field curvature at all focal-lengths was judged to be excessive and may affect sharpness at the edges of the
field when photographing flat objects at wide apertures. Distortion was minimal at 35mm, just noticeable at 19mm, and
28mm, a better then average performance for this class of zoom.
*
In the field:* Test slides showed good sharpness and contrast at all focal-length settings and apertures except for a
slight loss of sharpness visible in the corners of the field at maximum and minimum apertures.
*Conclusion:* A handy ultrawide-to-wide zoom offering good overall performance at a
reasonable price."
On Dec 15, 2015 8:48 AM, "Chris Trask" <christrask@xxxxxxxxxxxxx> wrote:
Brian,
Thank you for posting this. I have one of the Samyang 18-28mm
wide-angle zooms. Pretty handy for situations where I can;t back off far
enough to use a 28mm lens.
*"In the lab.* SQF data indicates performance as average at 18mm and 24mm
settings but below average at all focal lengths.
*In the field:* Test slides were generally well exposed, with good contrast but with noticeable edge and corner light
falloff from maximum aperture to f/8 at 18mm, f/9.5 at 24mm, and f/11 at 28mm. Flare was very well controlled throughout.
*Conclusion:* Extreme wide-angle but relatively compact zooms are among the most difficult lenses to design and
manufacture. Obviously, sacrifices such as in maximum aperture light falloff, field curvature, and SQF results at 28mm
are trade-offs for the high convenience of the focal length selection available."
In other words, a cheaper and poorer alternative to the Viv. If you look closely at their SQF results, the Samyang is
clearly inferior for any but small display sizes.
I often have wondered why you are dumpster diving for third tier lenses, when the better quality MF lenses are available
so cheap.
The Oly 7-14s for 4/3 and µ4/3 will stomp both of the above, but are far from
inexpensive.
Lens Grade Moose
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