Comments on: Quick Resolution Tests on Two New 70-200s

By: Roger Cicala

Roger Cicala — Wed, 17 Apr 2013 21:23:53 +0000

Hi Gary,

I’m travelling and don’t have numbers in front of me, but the Tamron is really very good and holds up well on the D3x. I wouldn’t hesitate with either lens, but if f/2.8 would be useful, I’d give the Tamron a really good look.

By: Gary

Gary — Wed, 17 Apr 2013 17:51:34 +0000

Love the Blog Roger; Given that different cameras (sensors) will deliver different resolution results, have you compared the new Tamron 70-200mm 2.8 with the Nikon 70-200mm f4 on your D3x. I would love a 2.8 lens, but between the new Nikon f4′s sharpness, lower weight and lower price (compared to the Nikon 2.8 VRII), I thought that was the way to go. Now this new Tamron is drawing me back.

By: Craig

Craig — Fri, 01 Mar 2013 06:18:07 +0000

There seems to be a few varying opinions on whether the Nikon 70-200 f4 offers any weather sealing or the level of dust and moisture resistance. Any opinion or information on that? Thanks.

By: Roger Cicala

Roger Cicala — Sun, 24 Feb 2013 19:04:26 +0000

Marius,

The new Tamron 70-200 isn’t very parfocal either, I’m afraid.

By: Marius

Marius — Sat, 23 Feb 2013 16:43:25 +0000

I would like to ask a small favor, if you still have the lens and didn’t just lent it for your review. My inquiry concerns par-focality i.e. when the lens holds the same focus throughout the zoom range. A quick test to see this is to shift the lens to manual focus, then zoom in to 200mm, focus on an object approximately 10ft away and then take a photo. Afterwards you go to 70mm without touching the focus and then take another photo and see if the object is still sharp (bare in mind that par-focality actually can be affected by the temperature of your surroundings). This feature is mostly used when filming and the new Canon 70-200 f.2.8 IS mrkII is very bad at this, where the original Tamron 70-200 was nearly par-focal as well as the mrkI from Canon. I hope you can find the time to help me figure this out.

By: Makar79

Makar79 — Tue, 19 Feb 2013 23:12:58 +0000

Many thanks for the reply, Roger.
For you, are the construction quality and so called “tropicalization” of the two version and the “white” rival’s counterparts very similar?
I ask you this because of this forum user’s who claimed so many times that the Nikkor MK II was so bad in construction and tropicalization compared to the other three that I cannot hear it anymore
I asked you this even because I usually don’t disassembly Lenses, I try to use them…
Thanks again

By: Roger Cicala

Roger Cicala — Mon, 18 Feb 2013 15:17:37 +0000

Makar,

There are no internal gaskets except those under the front and rear. I don’t recall any O-ring under the zoom focus rings in the Mk I, but there certainly aren’t any in the mk II.

By: Makar79

Makar79 — Sun, 17 Feb 2013 18:54:25 +0000

Mr.Cicala,
I’m curious about the Nikkor 70-200 VR II and It’s tropicalization, are the focus ring and the zoom ring protected against dust and water resistant?
I’ve heard in one or two italian forum that the VR II, unlike the VR I, is protected only near the camera mount and that it is not protected with O-Ring under zoom/focus ring any more, is it true?
I think that who commonly repair and so a lot of times disassembles them can respond to this.
I know that I’m a lot OT, sorry for that and for my english
Matteo

By: che thai nguyen

che thai nguyen — Fri, 04 Jan 2013 11:48:16 +0000

thanks you, i am improve this content

By: Bare

Bare — Wed, 12 Dec 2012 11:59:50 +0000

Is anywhere resolution chart of Sigma 70-200 OS?