Joined on Nov 12, 2011


Total: 111, showing: 1 – 20
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In reply to:

JimW-203: Query:

If one wanted to use this feature to do a quick (relatively) and dirty focus stacking for macro, does it seem logical/possible through the LR path?

Hypothetically, as I understand the feature, the process would be:
1) take the shot and then
2) use LR to establish up to 30 jpegs, each with a different point of focus.
3) stack the 30 shots in PS or other appropriate editing software
4) edit, enhance, etc. the result as needed/desired

Considerations I might consider adding in the process would be:
1) convert the first output (the 30 frames) to TIFF or other lossless format before the stacking and editing phase in order to minimize damage to the final output
2) as with all macro, plan the shot in advance and use a tripod
3) select the frames to be used with care - using all 30 might not add enough to make the processing time and overhead worth it.

Does this seem either doable or desirable? Comments, please.

This is done through changing lens focus. At long distances this hopefully does not change the framing too much but at macro distances it highly depends on the lens. Any focus breathing will make the stacking task quite onerous. 'Normal' slow focus stacking can be done with a combination of lens focus and camera shift so you can even use a lens with focus breathing.

Direct link | Posted on Nov 25, 2015 at 20:39 UTC
On article And the winners are: DPReview Awards 2015 (399 comments in total)
In reply to:

riveredger: The amount of hostility conveyed in some of these threads is simply juvenile. Did you guys get so negative before you were photographers or because you are photographers?

Mainly because of tribalism. Tribalism itself is juvenile enough. Tribalism based on brands of products is beyond juvenile. And yet it is human nature. At least compared with tribalism based on religion, ideology, etc. this does not hurt or kill anyone...

Direct link | Posted on Oct 9, 2015 at 21:14 UTC
On Sony Alpha 7R II Review (2076 comments in total)
In reply to:

Frank C.: sold all my gear and didn't buy this, just sold all my gear, my iphone is sufficient for my photographic needs, the camera companies and their overpriced hype can stick it anywhere they want

Suppose this won't be too popular, so I liked it.

Direct link | Posted on Sep 27, 2015 at 19:35 UTC
In reply to:

Sad Joe: Are these the same glass as the Sony / Zeiss BATIS range ? If so strange that on the Sony they are AF but not on Canon or Nikon. Its not like Zeiss could not afford the licence, also it appears to make the BATIS range rather better value for money. Score one for Sony !

The Batis range is available in Japan with a genuine Cosina warranty so could be manufactured by Cosina. There is no overlap between Batis and Milvus so they are not Batis dressed in Milvus clothing.

Direct link | Posted on Sep 11, 2015 at 13:22 UTC
On article Panasonic confirms Lumix G 25mm F1.7 (221 comments in total)
In reply to:

happypoppeye: Would probably still buy the 25 f/1.4.

It's fairly reasonable to expect them to have 'screwed up the bokeh' or in other words, not set the bokeh as an important design factor. There has to be some design compromise somewhere...

Direct link | Posted on Sep 4, 2015 at 21:12 UTC

Lenses keep growing in size. 67mm filters for modest aperture normal primes now. Very soon filter companies will be able to remove 52mm and smaller sizes from their catalogs...

Direct link | Posted on Sep 3, 2015 at 21:49 UTC as 18th comment | 1 reply
In reply to:

Kaso: Can't fix. Lost source code. Must keep using old compiled library.

Strange as this might sound, it's a very rational explanation.

Direct link | Posted on Sep 2, 2015 at 21:00 UTC
On article Crazy 8: Panasonic Lumix DMC-GX8 sample gallery (111 comments in total)
In reply to:

IZO100: ahhh 4/3 ratio... What a silly idea.

A circular sensor has the problem of costing essentially the same (actually more considering the trimming needed) as a square one that fully contains the circle. The processing needed will also be the same as for the larger square sensor, if you want to eventually display a circular image. It's perhaps better to just use a large square sensor that fully contains the image circle anyway and the in-camera software can have auto cropping features for the user to pick and choose. Option 0 - keep the entire circle (which means also keeping the dark corners), option 1 - square format, option 3 - 5:4, etc. until option n: 1:3 or some super wide cinema format. The VF will display the chosen format.

Direct link | Posted on Aug 26, 2015 at 09:58 UTC
In reply to:

Paul_B Midlands UK: Was interesting to see, especially the benefits of getting f2.8 or wider, last weekend I hit some limitations with my Sony supawide zoom f4 (ouch) with a6000 and slow to focus is poor light rx10. Note no flash allowed .. Nice too see what the better gear or lens at least can do. Here bad light gig shots and BMXing!
I have no faith to use iso more than 1250 images seem to degrade too much or maybe that's Sony's rather less impressive jpg engine. Its a reason is like to sell up and move in to maybe high qual m4/3.

Looking at the flickr page OP linked to, neither OIS nor IBIS would have been much use as the subjects were moving.

Direct link | Posted on Aug 23, 2015 at 12:07 UTC
In reply to:

steve_hoge: Would be nice to see the results of pairing these lenses with the OMD EM-5 Mk II body shooting in hi-res (40Mp) mode.

Not with the moving water. HiRez with moving water ouch.

Direct link | Posted on Aug 23, 2015 at 12:02 UTC
In reply to:

ChrisH37: What happened to the Panasonic 150mm 2.8? Killed off due to the Olympus 40-150 2.8?

The lack of fast-ish telephotos is puzzling, if ever a system was ready made for it then you would think M4/3 would be it, particularly as there are now a number of DSLR style bodies with decent grips.

A 200mm f4 would be nice, for example.

One day there will be an FF 800/13 zoom, or an APSC equivalent both of which of similar weight and size to this lens. Then we will have multiple choices to work with. Until then, these arguments are academic.

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

ThirstyDursty: The DFD feature could be good for automating macro image stacks. Rather then using a macro slider or manually moving could do it automatically with no gaps...then choose the start and finish frame and stack in post.

Assuming no focus breathing, which at macro distances could be a problem.

Direct link | Posted on Jul 16, 2015 at 13:31 UTC
In reply to:

ChrisH37: What happened to the Panasonic 150mm 2.8? Killed off due to the Olympus 40-150 2.8?

The lack of fast-ish telephotos is puzzling, if ever a system was ready made for it then you would think M4/3 would be it, particularly as there are now a number of DSLR style bodies with decent grips.

A 200mm f4 would be nice, for example.

You kill my 150/2.8. I kill your 300/4 back.

Direct link | Posted on Jul 16, 2015 at 13:30 UTC
In reply to:

Zeisschen: It sounds like a much more simple but at the same time higher resolution approach compared to the Lytro. The difference is, it won't capture just one shot but a short video sequence. That might matter for moving subjects.

Rolling shutter could also be an issue there, but eventually Panasonic sensors are als fast enough like Sony stacked ones to eliminate it.

Good point. And you cannot just make exposures with the lens in continuous focus motion. The lens has to stop at each point to expose a frame, then move to the next point and expose a frame, etc. CDAF lenses are good for this king of thing, but good enough to which point?

Direct link | Posted on Jul 15, 2015 at 09:56 UTC
In reply to:

CrashMaster: The way technology is going the photographer will be in danger of being made redundant.

This could have been said when almost every technological development was made in cameras and lenses, and yet we still have photographers today, more of them than ever. Specific skills become redundant, but hopefully not the artist.

Direct link | Posted on Jul 15, 2015 at 09:47 UTC
In reply to:

Peter Heckert2: This might be the end of PDAF and mirror technology.

Not necessarily, the focus distance sweep might miss a moving subject, i.e. it ends up chasing the subject a few paces behind always throughout all the individual images with the subject never in focus.

Direct link | Posted on Jul 15, 2015 at 09:46 UTC
In reply to:

Shiranai: So far this technology as well as light field technology is still inferior to real bokeh captured by a lens.
Afterward bokeh calculations always struggle when it comes to difficult and detailed objects like branches or semi-transparent objects. Light field bokeh has still problems with artifacts, resolution and IQ is rather low.

I'm looking forward to Panasonics approach but I think there has yet to flow a lot of water down the river till we see any major breaktroughs. And even then, people will still prefer lenses for their analogue and retro look.

I don't know about Lytro, but this technology of sweeping through the focus range with a number of individual shots does give 'real bokeh' caused by the analogue properties of lenses.

Direct link | Posted on Jul 15, 2015 at 09:44 UTC
In reply to:

The Straw Man: Well looks like 711 people figured out that a stupid law like that could put a dent in big money businesses like tourism. It would really put a damper on vacationers not being able to actually post photos of where they're traveling.

No you don't need to nab everyone, or anyone. Just go knocking on the doors of 'American giants' like Google, Facebook and Wikipedia which this law is ostensibly targeting. Amazon, and by extension DPR, probably also qualify. Much simpler solution. However these giants have 'the people' on their side this time...

Direct link | Posted on Jul 13, 2015 at 16:13 UTC
In reply to:

Don Finch: So does this mean I can go to Paris France in September and not have to worry about being thrown in prison for taking pictures of my favorite place on earth?
Just looking for clarification from a Paris resident on what to expect.

In many cases taking pictures is not illegal but using them commercially without the agreement of the copyright holder might be. So arrest in real time is extremely unlikely.

Direct link | Posted on Jul 13, 2015 at 15:52 UTC
On article Alpha dog: Hands-on with Sony a7R II (1119 comments in total)
In reply to:

DavidKennard: Pretty good, but still missing a few things:
Fully articulated LCD
Global shutter
Built in teasmade

You forgot uncompressed real RAW.

Direct link | Posted on Jun 10, 2015 at 19:55 UTC
Total: 111, showing: 1 – 20
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