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14,732 reputation
1849
bio website j.mp/NZPHOTOS
location Auckland, New Zealand
age
visits member for 3 years, 4 months
seen 4 hours ago

Electronic designer. Professional Engineer. Oldish aka "reasonably experienced" :-).
Contact - apptechnz gmail com <- you know the drill.
Tel: +64 9 837 2999 gmt+13

Special interest in technological solutions for developing country applications. Extensive in-China experience in product development & manufacturing in China.

Jack of all trades, Master of Electrical engineering. (aka ME (elec)) Interested in all aspects of modern technology. Professional qualifications in electrical engineering but practically proficient or conversant in many peripheral areas.

Recent extensive experience in solar powered LED lighting development and manufacturing in China for markets worldwide.

"Servant of the Most High God" / committed Christian. Happy to work enthusiastically and interact amicably with people of all nationalities and creeds.

Married with 2 adult children.

Obsessional photographer.


Sep
25
comment How practical is shooting in lowlight without a viewfinder?
@tomp (1) For the under-the-table example I'm not sure. More playing needed. (2)For the matte black housing the EVF display was brighter than what my eye could see - I mean, what I could see by eye inside the housing. The EVF & LCD both showed what the photo would show. In this case "correct exposure" was dealing with a light level that my eye-brain auto system had given up on.
Sep
25
comment why would you have a light meter chose your aperture for you?
Sometimes in special cases shutter speed is critical. Television pictures usually work best at some multiple of frame rate/2. eg 1/25th. 1/50th second in 50 Hz frame rate systems. Plasma TVs have internal clock rates that are best synced to to avoid some otherwise astounding results.
Sep
25
comment why would you have a light meter chose your aperture for you?
The aperture and shutter speed and motion effect can lead to interesting results. My profile picture is an example. Many people think it is a blurry mess (and much of it is) and at least one person here was extremely rude about it [Their SOP so no problem :-) ] but it's purposefully done. In this case its background is essentially contentless but this does not have to be so. Larger version of blurry mess here** zz
Sep
25
comment why would you have a light meter chose your aperture for you?
Related: Be aware of the effect of ambient light in photos with motion in. Your camera may expose the scene correctly for ambient light and so use a low shutter speed. The flash level will then be adjusted automatically and depending on mode used, the ambient may be signfiicant. This can lead to halo'd shots with sharp flash core and a blurred overlay from motion and ambient. You can experiment with this effect to achieve interesting results - but you don't want it accidentally.
Sep
24
awarded  Autobiographer
Sep
22
comment How do I accurately capture the colour of sunlight on a wall?
Read page 134 in the NEX5R manual cited inmy question. It says that the camer DOES have WYSIWYG preview and that it can be turned on/off with the "setting effect" setting. Also, did you try what I suggested - its not clear from what you have written so far that you have (bbut you may have). This is in addition to std white balance. That plus WYSIWYG should do what you want. It sounds the same as on my A77 which will cerytainly do this.
Sep
22
comment How can I hack 35mm film into a 120mm camera and have it safely received?
A very keen man :-). Is this for "fun" or ...? | You could perhaps make a receiver with sprocket pins on the takeup roll to reduce 'fat roll effect'. As others have said - a lightproof bag works for this. A workaround I read of many moons ago is to use a jacket or coat. fold top and bottom towards front, place on ground with light entry points folded under. Kneel on one end and put arms down sleeves to access camera. Coat needs to be suitably light proof.
Sep
22
comment Can old photos be used in a self-published memoir without permission?
The phantom downvoter strikes again. How strange. Almost a year after answer given. I see Nir has one too - possibly from the same person who has no clue what the terms "useful"/"not useful" mean.
Sep
21
comment How do I accurately capture the colour of sunlight on a wall?
Kartick - I'm rather surprised that nobody has commented on my answer as it seems to be ideal for your specific camera. I'd be interested to hear how well it accomplishes what you want. On my A77 Sony, and maybe on yours?, you can add a filter pair to most colour balance settings. So eg you an choose daylight white fluro (often good) and then 'dial in' some extra green-magenta or red-cyan as desired .
Sep
20
revised How do I accurately capture the colour of sunlight on a wall?
deleted 144 characters in body
Sep
20
revised How do I accurately capture the colour of sunlight on a wall?
added 723 characters in body
Sep
20
comment image enhancement to read car plate
A look through many images using : brazil hatchback and brazil wagon does not show one like that. High rear lights unusual. Ford Fiesta like but different. May be rare. Model/brand =?
Sep
20
comment image enhancement to read car plate
Is that line of ?holes? across the front of the bonnet standard for that model of car? I've not seen anything like that before.
Sep
19
comment How do I accurately capture the colour of sunlight on a wall?
Be sure to try what I've suggested. The other answers offer much that is useful re WB in general but Mr Sony has supplied a method of cheating very nicely indeed. Try it, you'll like it.
Sep
19
answered How do I accurately capture the colour of sunlight on a wall?
Sep
18
comment What defines camera's size?
aka Market fawcets.
Sep
18
comment What defines camera's size?
Good enough question +1. Sensor size sets one limit. Real men like to carry stupidly big heavy pointless stuff so top end FF SLRs are even bigger than lens aspects dictate. Real smart smartphone users value super smallness so manufacturers mak stupidly small sensors and cram in more pixels to sound great. Alas the smart phone tablet Phablet trend messed that up BUT manufacturers see that even people who will buy a $1000 phone prefer slim sophistication over image quality so still pack in silly sensors and too many pixels.
Sep
17
comment After how many shots is a camera considered old?
.... My A77 repair cost was reasonable but in any case was covered by service contract ("extended warranty"). | I take "more photos than many". 'Quality AND Quantity' :-) [good theory].
Sep
17
comment After how many shots is a camera considered old?
Data point: My Sony A77V shutter precharge unit failed at 233,608 counts (which I was told is the usual failure mode.) The A77 counts 2 counts with dual curtain operation and 1 count with electronic 2nd curtain so actual shots between 116,xxx and 233K - so say 175,000. - :-). Real world results vary very widely for the same model - there are tables somewhere on web. Some with claimed say 100k may get SOME failures at 30k while others last 250,000k +. Really. So, need to look it up. BUT shutter replacement cost is knowable and can be factored into price. ....
Sep
17
comment Problem in white balancing photographs taken in sun
... (And, yes, I know we often do want to). Light at various colour temperature may fall on the black body/ Plankian locus and therefore be "white" but there is white and there is white. As I know we all know.