PIX 2015
futile32

futile32

Lives in United Kingdom United Kingdom
Joined on Aug 2, 2004
About me:

Mamiya RZ67 Pro II.
Bronica SQA.
Fuji GS645S.
Fuji GSW690III.
Agfa Billy Record (6x9).

Canon G9.

Contour HD.
GoPro HD Hero 1.

Minolta 404si.
Minolta 5.
Minolta 7.

Minolta 7D.
Sony A700.
Sony NEX5.
Sony NEX7.

Minolta 28mm f2.8.
Minolta 50mm f1.7.

Voigtlander Nokton Classic 35mm f1.4.
Samyang 85mm f1.4.

Sigma 12-24mm f4-5.6.
Sigma 15mm f2.8.
Sigma 24-70mm f2.8.
Tamron 90mm 1:1 f2.8.
Tamron 70-300mm 1:2 f4-5.6.

Sony CZ16-80mm f3.5-4.5.
Sony CZ70-300mm f4.5-5.6 SSM.

Sony 20mm f2.8.
Sony 28mm f2.8.
Sony 50mm f1.4.
Sony CZ85mm f1.4.
Sony 135mm STF f2.8.

Sony 35mm f1.8 SAM.
Sony 50mm f1.8 SAM.
Sony 85mm f2.8 SAM.

Fujinon 25mm f1.4 CCTV.
Industar 69 28mm f2.8.
SLR Magic 28mm f2.8.
Fujinon 35mm f1.7 CCTV.
Konica 40mm f1.8.

Sony 16mm f2.8.
Sony 18-55mm f3.5-5.6 (black).
Sony CZ24mm f1.8.
Sony 50mm f1.8 OSS.

Sigma 30mm f2.8 DN.

Sony LA-EA1.
Sony LA-EA2.
Sony 2x Teleconverter.

Minolta 5600HS.
Sony F43AM.
Metz Mecablitz 15 MS-1.
Yongnuo YN-560 [x3].
Vivitar 285hv [x3].

Comments

Total: 185, showing: 1 – 20
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On Sony Alpha 7R II: Real-world ISO invariance study article (333 comments in total)
In reply to:

dosdan: I know DPR's policy is to use ACR because of its market dominance, but doesn't ACR incorporate undisclosed "optimisations" that vary with the ISO? Because if it does, then the results of this test will be affected, perhaps significantly.

A test of ISO100 vs ISO1600 (4stops) should be performed using both ACR and RawTherapee (an open-source raw converter whose neutral processing behaviour is verifiable). If there is no difference, fine.

I'm not against raw converter optimisations if they can be disabled when required. But if they are present in ACR and can't be disabled, then this is not a test of "true" ISO invariance, but of "real world" behaviour i.e. what ACR has been specifically designed for, with ISO100 shots expected to need less noise optimisation than ISO1600+ shots.

Dan.

I just had a look at the iso100 raw in RawTherapee and the artefacts are more pronounced.

Direct link | Posted on Aug 24, 2015 at 22:37 UTC
On Sony Alpha 7R II: Real-world ISO invariance study article (333 comments in total)
In reply to:

futile32: I own the A7R and A7RII, but thankfully have yet to see these compression artefacts?

Am I right in saying that they only appear when you severely push a shot in Post production?

I see. I suppose its sad that the issue is there, but I don't believe I'll ever see it or have it affect me in what I do. I do push my landscape shots a little, but am usually no more than 2-3 stops, I guess its good to know not to try much beyond that in high contrast scenarios.

Direct link | Posted on Aug 24, 2015 at 22:31 UTC
On Sony Alpha 7R II: Real-world ISO invariance study article (333 comments in total)

I own the A7R and A7RII, but thankfully have yet to see these compression artefacts?

Am I right in saying that they only appear when you severely push a shot in Post production?

Direct link | Posted on Aug 24, 2015 at 20:28 UTC as 50th comment | 4 replies
In reply to:

Saintiwari: Rishi and others,
This stooping down behaviour of the camera that you noted, is only when you set it up for live view preview of your exposure...
What if you don't set it up like that for low light? What happens then?
Thanks

Interesting, I wasn't aware it was possible to have a shift in focus from an aperture change. Guess I got some reading to do.

Direct link | Posted on Aug 21, 2015 at 15:53 UTC
In reply to:

Horshack: Question for Rishi or A7rII owners - Does the A7rII stop down the aperture when Exposure Preview is enabled, like on previous A7 generation bodies? (Sony calls it "Live View Display - Setting Effect ON"). If so, this would mean AF performance still degrades when smaller apertures are used.

Yeah I was playing with the setting of "Priority Set in AF-C" from Balanced to Release, but didn't seem to help.

Hopefully they will fix this, or at least give the option to choose. Cheers.

Direct link | Posted on Aug 21, 2015 at 07:50 UTC

@Rishi

You mentioned that from initial tests subjects moving towards the camera with Continuous AF and Continuous Drive can result in a number of OOF shots in the middle of the series...

I'm curious if you guys intend to measure the EVF lag... cause at least on the A7R I would routinely experience lag of upto 250ms... and I had a feeling it was partially to blame for slightly backfocused shots (when subjects came toward the camera).

I'd be curious if (1) you guys think thats likely, and (2) if the A7RII is much better in that respect. I'm assured in the forums it more of an AF speed issue, but the shutter lag feels like a possible culpret.

At least so far in my A7RII usage, I've not noticed the same kind of lag, although I have yet to shoot fast action.

Direct link | Posted on Aug 21, 2015 at 07:44 UTC as 101st comment
In reply to:

Saintiwari: Rishi and others,
This stooping down behaviour of the camera that you noted, is only when you set it up for live view preview of your exposure...
What if you don't set it up like that for low light? What happens then?
Thanks

Ah I noted this behaviour too and asked about it below. Seemed strange to me. I typically shoot with Setting Effect OFF and have a button set to 'preview on hold' which is really nice.

So bizzare that it would still stop down unnecessarily. Got to be a bug.

Direct link | Posted on Aug 21, 2015 at 07:33 UTC
In reply to:

Horshack: Question for Rishi or A7rII owners - Does the A7rII stop down the aperture when Exposure Preview is enabled, like on previous A7 generation bodies? (Sony calls it "Live View Display - Setting Effect ON"). If so, this would mean AF performance still degrades when smaller apertures are used.

@Rishi

I'm seeing an odd behaviour on my A7RII, that I think you describe in your article.

I have "Settings Effect" turned Off, and have it set to a button to basically 'hold to preview'. In a low light room, if I take the aperture down to say F22, the camera still seems to close up the lens during focusing. I would expect that because of my "Settings Effect - Off" that this wouldn't happen, and that the camera 'should' keep the aperture wide open until the moment of exposure.

Do you guys also experience this?

I'm using the FE35mm F2.8 right now.

Direct link | Posted on Aug 21, 2015 at 07:18 UTC
In reply to:

futile32: I'm curious how long it will take for Panasonic, Olympus and Sony to realize they can all do this today if they utilize IBIS with some smart coding.

Software Bokeh has gotten surprisingly good these days, I do envisage a z-map added to RAW files in the future to allow bokeh simulation / refocusing.

My Android phone has done a surprisingly good job of this for the last two years.

EDIT.. although its nice to see Pany taking another approach and doing some R&D.

Can be done by just moving left and right. Only senarios where this really isn't good is with glass objects in the shot.

Direct link | Posted on Jul 18, 2015 at 03:14 UTC
In reply to:

cgarrard: Yay! Tiny sensors still have a legit place on the market. Would have been nice to see a BSI CMOS 1 1/7" sensor on this, even with say a max aperture range of f/2.8-4 instead of constant f/2.8. I think that would have been a tradeoff many would be willing to stomach. Regardless, the FZ200 was no slouch on IQ in any regard.

Carl

Yeah just looked at the Z200 vs the Sony RX100, its not too bad considering the sensor size, probably will make for a good Video camera at the least.

Direct link | Posted on Jul 16, 2015 at 05:48 UTC
In reply to:

futile32: Is the 25-600mm a pre or post translated 35mm equiv figure? Its astonishing that its a f2.8 constant, I'm guessing the sensor must be tiny? Any ideas on its size?

Amazing to get 4k with that kind of Lens size for $600. Curious how it stacks up against the video quality from the Sony's that are now double the price.

sorry just found the other news item:
1/2.3" (6.17 x 4.55 mm)

Pretty small I guess, but its the IQ that counts.

Direct link | Posted on Jul 16, 2015 at 05:42 UTC

Is the 25-600mm a pre or post translated 35mm equiv figure? Its astonishing that its a f2.8 constant, I'm guessing the sensor must be tiny? Any ideas on its size?

Amazing to get 4k with that kind of Lens size for $600. Curious how it stacks up against the video quality from the Sony's that are now double the price.

Direct link | Posted on Jul 16, 2015 at 05:41 UTC as 53rd comment | 3 replies
In reply to:

futile32: I always get this the wrong way round so correct me if I'm wrong, but "4:1 macro" would mean 4x life? Should it be "1:4 macro" ?

Yeah you're right that does help. I'll remember it. cheers

Direct link | Posted on Jul 16, 2015 at 05:36 UTC

I'm curious how long it will take for Panasonic, Olympus and Sony to realize they can all do this today if they utilize IBIS with some smart coding.

Software Bokeh has gotten surprisingly good these days, I do envisage a z-map added to RAW files in the future to allow bokeh simulation / refocusing.

My Android phone has done a surprisingly good job of this for the last two years.

EDIT.. although its nice to see Pany taking another approach and doing some R&D.

Direct link | Posted on Jul 16, 2015 at 05:34 UTC as 40th comment | 3 replies

I always get this the wrong way round so correct me if I'm wrong, but "4:1 macro" would mean 4x life? Should it be "1:4 macro" ?

Direct link | Posted on Jul 14, 2015 at 14:15 UTC as 23rd comment | 3 replies
In reply to:

VisualFX: "Once-in-a-lifetime". This is very overused and getting old phrase. Just call it a "nice sunset", that actually will appear again on the next rainstorm. Also the image is highly over-processed. Nothing spectacular versus other sunset images.

but yes it is a nice sunset too

Direct link | Posted on Jul 11, 2015 at 17:14 UTC
In reply to:

VisualFX: "Once-in-a-lifetime". This is very overused and getting old phrase. Just call it a "nice sunset", that actually will appear again on the next rainstorm. Also the image is highly over-processed. Nothing spectacular versus other sunset images.

Well assuming you lived 80 years and started photographing sunsets at the age of 20 until the day you died. You'd have about 21,914 opportunities. Location, Weather and Seasons probably limit your chances of getting this scenario quite significantly though.

I think if you really spent your whole life trying you could absolutely get odds somewhere in the 1 in a million, so I'd say "once-in-a-lifetime" is probably an understatement but definitely not hyperbole.

Direct link | Posted on Jul 11, 2015 at 17:13 UTC
In reply to:

RyanBoston: If he shot with an A7RII there would have been a rainbow with a unicorn flying over it. ;)

now now I don't think that's true. But he might not have had to bracket ;)

Direct link | Posted on Jul 11, 2015 at 17:00 UTC

Well, thats good news for Canon folk. Its a step up from what existed for them so far. Thats probably the main thing.

Direct link | Posted on Jul 9, 2015 at 19:13 UTC as 129th comment | 1 reply
On Sony: An eye on focus article (763 comments in total)

Would be cool if it could detect both eyes and then do hyperfocal or Aperture suggestion/override.

This tech just opens the door to alot of possibilities for sure.

Direct link | Posted on Jul 3, 2015 at 02:07 UTC as 70th comment
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