Lives in United Kingdom United Kingdom
Joined on Nov 12, 2011


Total: 126, showing: 21 – 40
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In reply to:

Jonathan F/2: There's some noticeable CA shot wide open. It's pretty ugly. It'll probably look better shot on an Olympus Pen-F!

It will be some task for software developers to profile this lens ...

Link | Posted on Mar 9, 2016 at 09:07 UTC
In reply to:

Mike FL: Here we go "200mm that the quoted GN60m@100 ISO", 200mm.

Not at all. More likely half, if you study a few zoom flash GN charts given by the manufacturers. Zoom x 4 -> GN doubles, roughly speaking. Individual lights may differ somewhat from this mean. GN of 30 at 50mm coverage is not ground breaking at all but much better than 15, which is more suitable for a camera-powered flash with no batteries than one with four batteries.

Link | Posted on Feb 27, 2016 at 21:56 UTC
On article CP+ 2016: Hands-on with new Sigma SD cameras and lenses (313 comments in total)

This is known as Deep Throat...

Link | Posted on Feb 25, 2016 at 20:44 UTC as 42nd comment | 3 replies
In reply to:

dark goob: Is it weatherproof?

See this image:

Although the image might not conclusively say anything - one can drench anything in water like that if it does not matter if it damages anything - given normal assumptions I'd say it's probably at least advertised as weather resistant.

Link | Posted on Feb 22, 2016 at 16:33 UTC
On article History Repeating: Olympus PEN-F Review (1058 comments in total)
In reply to:

Louis_Dobson: Anyone able to tell me if ISO can be assigned to a dial? Aperture plus exp comp plus ISO on dials would be my perfect camera.

Manual is not clear.

Does this picture answer this question?

Link | Posted on Feb 2, 2016 at 11:12 UTC
On article Top 5: Hands-on with Nikon D500 (784 comments in total)
In reply to:

Hugo808: Has focusing in live view improved over the D750? That'd be a real bonus and would take away one of the advantages of a mirrorless

If you can calibrate the PDAF with the imaging sensor, it no longer matters for AF i.e. PDAF is essentially as accurate as CDAF whilst retaining its speed advantage.

Link | Posted on Jan 8, 2016 at 17:53 UTC
In reply to:

tinternaut: Ummm.... When did they stop? Where do the latest sensors in Panasonic cameras (e.g. the GX8) come from? What am I missing here?

From Sony, likely.

Link | Posted on Dec 7, 2015 at 20:35 UTC
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.

Link | Posted on Nov 25, 2015 at 20:39 UTC
On article And the winners are: DPReview Awards 2015 (394 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...

Link | Posted on Oct 9, 2015 at 21:14 UTC
On article Sony Alpha 7R II Review (2180 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.

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.

Link | Posted on Sep 11, 2015 at 13:22 UTC
On article Panasonic confirms Lumix G 25mm F1.7 (205 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...

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...

Link | Posted on Sep 3, 2015 at 21:49 UTC as 21st 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.

Link | Posted on Sep 2, 2015 at 21:00 UTC
On article Crazy 8: Panasonic Lumix DMC-GX8 sample gallery (115 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.

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.

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.

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.

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.

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.

Link | Posted on Jul 16, 2015 at 13:30 UTC
Total: 126, showing: 21 – 40
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