TristanW

TristanW

Lives in China Beijing, China
Works as a Marketing
Joined on May 7, 2008

Comments

Total: 33, showing: 1 – 20
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On article Our favorite gear, rewarded: DPReview Awards 2016 (271 comments in total)

Sigma 85/1.4 is way too big/heavy, I would vote 85/1.4GM

Link | Posted on Dec 26, 2016 at 13:50 UTC as 85th comment
On article DPReview Asks: What was your first camera? (764 comments in total)

SONY a100,back In 2006

Link | Posted on Nov 5, 2016 at 10:59 UTC as 205th comment
In reply to:

rz350: And it is only $200 more than the Sony 70-200! That is impressive for pricing, considering that the Sony has to rely on the camera body for stabilization. I must admit that I thought Sony lenses were expensive to state the obvious, but Nikon is setting new standards.

sony 70200GM has on-lens OSS, plus IBIS for rest 3-axis compensation

Link | Posted on Oct 21, 2016 at 14:34 UTC
On article Photokina 2016: Hands-on with Sony a99 II (441 comments in total)
In reply to:

Nobby2016: what about the aperture closing down for fast shooting?

i read for 12 FPS you basically shot at f9.. is that true or did someone tell me BS?

my understanding :

with hybrid AF, apture can down to F8
rest AF, aperure need to be open to F3.5 or wider( f2.8 , f2 ...)

Link | Posted on Sep 20, 2016 at 13:32 UTC
In reply to:

Sid911: How much does the 70-300 for Sony E mount costs?

come on, there is only 1 special element here. check out FE 70300G 's construction, how many special glass there.

Totally different positioning & performance

Link | Posted on Sep 15, 2016 at 07:01 UTC

come on, there is only 1 special element here. check out FE 70300G 's construction, how many special glass there.

Totally different positioning & performance

Link | Posted on Sep 15, 2016 at 07:01 UTC as 16th comment | 3 replies
In reply to:

DamianFI: I thought it might make my GM lenses focus a little faster, but can't see any difference.

They aren't bad, would like the 85GM to be a little snappier like my 1.4/85G Nikkor.

sorry, i don't agree again. 85GM has much sharper and better blur for N85/1.4G

N's recent good blur-lens is 58G, with trading off the sharpness.

Link | Posted on Aug 21, 2016 at 15:08 UTC
In reply to:

DamianFI: I thought it might make my GM lenses focus a little faster, but can't see any difference.

They aren't bad, would like the 85GM to be a little snappier like my 1.4/85G Nikkor.

snappier would trade for worse sharpness or blur

Link | Posted on Aug 19, 2016 at 12:36 UTC
On article Sony announces FE 50mm F1.4 ZA prime lens (280 comments in total)
In reply to:

lecoupdejarnac: If you look at most of Sony's native FE lenses, they have a deep 'air gap' between the rear element and the mount that increases the registration distance. So most seem to be variations on old reflex designs, not new designs for short flange-back cameras. Smaller lenses may come in time, as companies start engineering for the small flange-back distance specifically. A few have appeared already it seems (loxia etc).

definitely not! expecially new lense in rencent release

Link | Posted on Jul 12, 2016 at 01:58 UTC
In reply to:

noflashplease: Sony's slow 70-300mm is $1,200 and has a 72mm filter thread? It goes to show that mirrorless lenses aren't necessarily smaller or cheaper? Unless this lens is as rugged as the Canon L-series, it's over priced by 50%, perhaps more if compared to the excellent Tamron 70-300 VC. I would hope, and even assume, that Sony's new "Nifty Fifty" is superior to Canon's recent 50mm F/1.8 STM, but it's also twice the price. Do you see a pattern here?

With the new adapter, I wouldn't be a bit surprised if Sigma ends up selling more FE lenses than Sony.

come on, it targets against 70300L, which is expensive as well

Link | Posted on Mar 29, 2016 at 17:52 UTC
On a photo in the Sony FE 24-70mm F2.8 GM Samples sample gallery (2 comments in total)

the lower-right area looks blur, same issue in #3 shot (24mm F2.8)

Link | Posted on Feb 9, 2016 at 16:25 UTC as 1st comment

the MTF of new FE 2470GM/70200GM is way too amazing, oh the later actual test shoots can match the curve

Link | Posted on Feb 3, 2016 at 19:08 UTC as 87th comment
In reply to:

Couscousdelight: Pentax is a dedicated photo company, they think about lenses before they release a body.

Sony is... something else.

I remember 24-70/2.8ZA started to sell from Feb in 2008, since a900 announced in Sep, 2008.

Link | Posted on Sep 25, 2015 at 13:02 UTC
On article Readers' Showcase: Stephen Cheatley (50 comments in total)

love the F-15E's capture!

Link | Posted on May 26, 2015 at 15:59 UTC as 6th comment
In reply to:

Kwick1: Why the lack of specs for the 24-70?

like to check out the new MTF...

Link | Posted on Apr 24, 2015 at 02:33 UTC
In reply to:

josseee: "significant improvements in image quality" does this mean the optical formula was changed? I doubt that, since the elements info looks the same as previous version, the length and weight also looks more or less the same (VII seems to be 2 grams lighter) Anyway, since my old 24-70 is already deadly sharp as it is and my only concern about "not so great" bokeh in some situations seems to be unresolved, I will skip this one...
Still good to see that sony is giving something to the A mount crowd

same concern here. but maybe SONY uses better speical glass to deliever better IQ, in same fomulation. or slightly addjust the design of some glasses.

because my copy of 70200GII has show much better sharpness wide-open, comparing to GI.SONY shows the same optical-formulation as well.

Link | Posted on Apr 24, 2015 at 02:29 UTC
In reply to:

TristanW: f1.4 /F2 sharpness looks a little bit soft. Can any one help to comment that?

it seem not as sharp as my 50/1.4ZA @f1.4, but MTF shows should be a lot better.

Yes, the 'close up'shot is ok, the eyelash looks good. Just when i check the landscape shots, especially the later ones with F1.4/F2.0, i expected them sharper.

Maybe i expected too much.

Link | Posted on Mar 7, 2015 at 11:59 UTC

f1.4 /F2 sharpness looks a little bit soft. Can any one help to comment that?

it seem not as sharp as my 50/1.4ZA @f1.4, but MTF shows should be a lot better.

Link | Posted on Mar 6, 2015 at 13:43 UTC as 20th comment | 5 replies
On article Sigma goes wide with 24mm F1.4 DG HSM Art lens (183 comments in total)

like to know the F8 MTF. so far, sony F2 ZA has a slightly better wide-open MTF.

for this 24 prime, i would like to go for FE verion, maybe will have a better edge/corner IQ.

Link | Posted on Feb 10, 2015 at 08:21 UTC as 44th comment | 2 replies
In reply to:

TristanW: seems the battery life of Canon's new body, is gettting shorter & shorter.

actually, i'm comparing it with a99/a77MII. Previously, that's a obviously 'shortcoming', but now, the gap looks smaller.

Link | Posted on Feb 6, 2015 at 05:41 UTC
Total: 33, showing: 1 – 20
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