Re: Question on zone focus

On 4/10/13, Boris Liberman, discombobulated, unleashed: >Well, Godfrey, I don't know what kind of adapter Cotty bought. I've >read from few people on Russian forums who bought cheap Chinese >adapters, that things such as incorrect infinity were being observed. >I am not saying that Cotty should be

Re: Question on zone focus

Well, Godfrey, I don't know what kind of adapter Cotty bought. I've read from few people on Russian forums who bought cheap Chinese adapters, that things such as incorrect infinity were being observed. I am not saying that Cotty should be feared or panicking. In fact, I think he is not that easily

Re: Question on zone focus

I've seen this article brought up over and over again on several lists in the past two weeks. To me, the most salient statement in it is this: "What Does It Mean in the Real World? Like a lot of laboratory testing, probably not a lot. Adapters couldn’t all stink or people wouldn’t use them. Lik

Re: Question on zone focus

Cotty, if you're so inclined, this: http://www.lensrentals.com/blog/2013/09/there-is-no-free-lunch-episode-763-lens-adapters could be of relevance and interest for you. On Thu, Oct 3, 2013 at 7:50 PM, Steve Cottrell wrote: > Okay folks here's a question I'll throw to the floor. > > I've finally b

Re: Question on zone focus

On 3/10/13, Godfrey DiGiorgi, discombobulated, unleashed: >You might as well just say to tickle the settings until it feels good to you. I like that answer the best. Thanks to all who replied, I've archived all your answers for further study. Waiter, more wine!! Cheers :) -- Cheers, Cot

Re: Question on zone focus

Pretty much what i said as well. Cotty's question resolves to "is my mount registration off?" And "how to use the DoF scale?" All DoF scales are created with an implicit magnification of the full format to a reference output with a known magnification (an 8x10 inch print from the source for

Re: Question on zone focus

On Thu, Oct 03, 2013 at 03:14:24PM -0400, Igor Roshchin wrote: > > > Thu Oct 3 14:43:07 EDT 2013 > Godfrey DiGiorgi wrote: > > > On Oct 3, 2013, at 10:54 AM, Larry Colen wrote: > > > > >> Wrong. Format ALWAYS influences apparent DOF. > > > > > > You are saying that if I take a photo with a D8

Re: Question on zone focus

Thu Oct 3 14:43:07 EDT 2013 Godfrey DiGiorgi wrote: > On Oct 3, 2013, at 10:54 AM, Larry Colen wrote: > > >> Wrong. Format ALWAYS influences apparent DOF. > > > > You are saying that if I take a photo with a D800, and in lightroom > > crop it down so that I'm only using the area of a u4/3 sen

Re: Question on zone focus

Zone focus takes advantage of the apparent DOF from a small aperture. Simple, or sometimes not so simple cameras that have smallish apertures, and only use Zone focus will make a number assumptions about film size print size and the users tolerance for out of focus images and supply usually ei

Re: Question on zone focus

You can easily play with the math of this at dofmaster.com gs George Sinos www.GeorgesPhotos.net www.GeorgeSinos.com On Thu, Oct 3, 2013 at 1:43 PM, Godfrey DiGiorgi wrote: > On Oct 3, 2013, at 10:54 AM, Larry Colen wrote: > >>> Wrong. Format ALWAYS influences apparent DOF

Re: Question on zone focus

On Oct 3, 2013, at 10:54 AM, Larry Colen wrote: >> Wrong. Format ALWAYS influences apparent DOF. > > You are saying that if I take a photo with a D800, and in lightroom > crop it down so that I'm only using the area of a u4/3 sensor, then > the apparant DoF will change? No. By doing that you ar

Re: Question on zone focus

>Would an incorrect lens flange-to-sensor measurement create the zone- >focus issue above? Yes, precisely. From your description it sounds as if the adapter is too thick and is not quite reaching infinity focus. This can be masked in many cases because stopping down can extend DOF sufficiently to

Re: Question on zone focus

On Thu, Oct 03, 2013 at 10:43:11AM -0700, Godfrey DiGiorgi wrote: > Wrong. Format ALWAYS influences apparent DOF. You are saying that if I take a photo with a D800, and in lightroom crop it down so that I'm only using the area of a u4/3 sensor, then the apparant DoF will change? > > Your state

Re: Question on zone focus

Wrong. Format ALWAYS influences apparent DOF. Your statement is a bunch of pixel peeping hooey promulgated by experts who have never made a photograph. If this were true, all of the BS about wanting full frame sensors to get shallow DoF is wrong .. And the theory is demonstrably, easily observ

Re: Question on zone focus

On Thu, Oct 03, 2013 at 06:30:39PM +0100, Steve Cottrell wrote: > -UID: 16931 > Content-Length: 2645 > > Godders -thanks for the reminders. Re sensor crop vs DoF - D'OH!!! Of > course. Hey my excuse is my back is bad and I'm in pain - addling my brain. Actually, the size of the sensor has nothing

Re: Question on zone focus

On Thu, Oct 03, 2013 at 05:50:27PM +0100, Steve Cottrell wrote: > Okay folks here's a question I'll throw to the floor. > > I've finally been able to mount a fully manual wide angle lens onto my > Fuji X-E1 and I was testing with it this afternoon. > > For the curious, this is what the combo look

Re: Question on zone focus

Godders -thanks for the reminders. Re sensor crop vs DoF - D'OH!!! Of course. Hey my excuse is my back is bad and I'm in pain - addling my brain. Thanks so much for that. I will do some further testing and might even make my own set of distance markings... now where is my Dremel bwahahahahah.

Re: Question on zone focus

One factor: Many of the less expensive mount adapters allow the lens to focus "past infinity", an inexpensive way to ensure that all lenses CAN focus to infinity by making the adapter+camera registration just a little shorter than nominal. The idea seems to be that since most users are likely t

Question on zone focus

Okay folks here's a question I'll throw to the floor. I've finally been able to mount a fully manual wide angle lens onto my Fuji X-E1 and I was testing with it this afternoon. For the curious, this is what the combo looks like: BUT if I try and 'zone'