drchevalier

Lives in Canada Canada
Joined on Dec 8, 2010

Comments

Total: 6, showing: 1 – 6
On article Comparison Review: Sony FE 50mm F1.4 ZA vs 55mm F1.8 ZA (233 comments in total)
In reply to:

Simone S: Great review as usual Rishi and as usual i totally agree with you! It is impossible for every professional to use a lens that focuses stopped down at the selected aperture!!! I have the same problem with the Zeiss 24/70 f4 after the last camera firmware and it's truly unacceptable... in dark conditions and considering that Sony doesn't even support external flash AF-assist, even at f8 it's impossible to focus and even in daylight can be challenging.
Actually that's the reason i'm not buying any new sony or sony zeiss lens at the moment and keep using my adapted Canon and Nikon lenses (with metabones and commlite adapters all my lenses focuses wide open!) .

Concur completely Simone S. Using Canon L glass with a Metabones Speedbooster Ultra on the a7R Mark II produces reliable autofocus regardless of the aperture selected. If Sony wants professionals to take their G Master series of glass seriously, they need to fix this bad design.

Link | Posted on Jul 20, 2016 at 14:44 UTC
On article Comparison Review: Sony FE 50mm F1.4 ZA vs 55mm F1.8 ZA (233 comments in total)
In reply to:

Peer B: Sony should make it a user choice stopping down aperture while doing autofocus.

Valen305 with great respect, your response is not valid on the a7R Mark II. It stops all lenses down immediately although it will open wide for autofocus on the first frame then stop down again. There is a visible blink in the EVF as it is reset. Unfortunately it does not open wide again for autofocus on subsequent shots where the shutter button is held down. Thus when shooting in AF-C and Continuous (burst) mode, if the focus plane to subject distance changes, the subsequent images will be out of focus. This may be ok for some people, but for studio work, or any kind of sports it is a serious failure. Sony must change this, and even some Sony representatives will anonymously agree (fearing retribution) that the current system is broken and needs changing.

Link | Posted on Jul 20, 2016 at 14:41 UTC
On article Comparison Review: Sony FE 50mm F1.4 ZA vs 55mm F1.8 ZA (233 comments in total)
In reply to:

Valen305: With regards to the bit about FE lenses focusing while stopped down - it depends on two settings. If set to AF-S, they will focus wide open, and then stop down when focus locks. Continuous focus or any sort of tracking causes them to stop down while focusing. Enabling live view effect will also cause it to stop down to the selected aperture. Hope this helps.

With great respect, the G Master series of lenses do not offer the solution stated. They stop down ALL the time, making focusing at medium apertures in a dim studio where one is using strobes all but impossible when in manual mode, the mode most often used in studio with strobes by professionals. The argument that doing so eliminates focus shift and reduces shutter lag, is a spurious, as every other vendor, many with superior AF, and some with less successful AF systems all manage to Autofocus properly wide open. Focus shift is more indicative of poor element or gearing design than a "natural phenomenon" Of course, I could be wrong, but then so would be my University level optics class.

Link | Posted on Jul 20, 2016 at 14:34 UTC
In reply to:

ATtheHelm1187: Are the 4k record times going to be longer than the D5? 30 min of record time would be nice

Nikon has announced that the initial limitation regarding duration of 4K video on the D5 has been addressed with firmware and that the D5 would support a maximum 4K clip length of 29:59 storage availability dependant.

Link | Posted on Mar 3, 2016 at 16:26 UTC
On article Dpreview Users' Poll: Best Camera of 2012? (1508 comments in total)
In reply to:

Alberto 1290: Why not the 1DX in the poll ?
I own both D800E and 1DX. there is no comparisons possible between the two, sorry fo the Nikon, but I find myself leaving the D800E at home the most of the time. It is a slow camera.It only has 36 mp
My vote is for the RX-1. Great camera, "innovative".

Have to agree about the 1Dx. I guess it's because it was announced in 2011 and then Canon futzed around for 9 months before delivering it. It's the best DSLR I have ever used. but, since it's not on the list, I vote RX100

Link | Posted on Dec 21, 2012 at 03:24 UTC

I owned the II 2x before it was stolen and replaced it with the III. With the 70-200/2.8 there is a discernable difference in IQ with the III being superior. If find the colour to be more accurate in the III. Moreover, sharpness and distortion control is better in the corners with the III over the II. While there is a price differential at MSRP, all things being equal, I believe it is worth the difference to spend for the III generation.

Link | Posted on Sep 10, 2012 at 15:06 UTC as 3rd comment
Total: 6, showing: 1 – 6