jhinkey

jhinkey

Lives in United States Seattle, WA, United States
Works as a Aerospace Engineering Consultant
Has a website at www.hinkey.zenfolio.com
Joined on Dec 27, 2005

Comments

Total: 446, showing: 81 – 100
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In reply to:

happypoppeye: Compressed RAW is not RAW. Its compressed.

You are not a newbie here on DPR, you should know better than to make such a statement.

Link | Posted on Oct 15, 2015 at 18:59 UTC

Sony giveth and likely Sony taketh away in some way . . . hopefully the camera doesn't now behave poorly in some other way as a result of using the uncompressed RAW files.

Link | Posted on Oct 15, 2015 at 13:37 UTC as 22nd comment | 8 replies
On article RX aeternus? Sony Cyber-shot DSC-RX10 II review (270 comments in total)

OMG - non-US English in the article title. I'll have to shake your hand Barney next time I see you in Glazers . . . .

Link | Posted on Oct 14, 2015 at 02:33 UTC as 80th comment
In reply to:

SKPhoto12: Why 3 lenses with such close focal length? I don't understand the brand logic. One step back or two forward will cover that focal length. Why not market one lens with 12mm focal length? Provide all the electronics and I think it would sell better than the almost finished product.

"jhinkey, field of view does not work that way, for same FOV change you need 58mm (34.5 deg.), 100mm (20.4 deg) and 150mm (13.7 deg) That is same 21 deg horizontal FOV change as 10mm (121.9 deg) 12mm (112.6 deg) and 15mm (100.4 deg)a"
Sigh . . . it's RELATIVE field of view change, not absolute . . .whenever someone says "small" or "large" it's a relative term. 5mm relative to 15mm is large, but 5mm relative to 200mm is small.
Yes, FOV does work that way.

Link | Posted on Oct 13, 2015 at 02:12 UTC
In reply to:

mr.izo: only problem with these classical design range finder lenses (beside af obviously), is their short flange distance. this does helps build smaller footprint lenses and all that, but on the other hand shows problems with aberations, corner sharpness etc, which was proved many times using these lenses on mrl ff cameras. yes, they can have super sharp center sharpness, distinctive micro contrast and all that, but for some serious wide angle work (architecture, landscape, interiors..) i would be careful and check things first..
edit:
i forgot: usually, also min. focus distance is bigger on rf lenses, that can be very limited sometimes.

Curved sensors have a long way to go for large imaging chip applications. Likely far more workable for cell phones and such.
The problem is that the curved sensor is likely not all that great for lenses designed assuming a flat sensor . . .

Link | Posted on Oct 12, 2015 at 16:10 UTC
In reply to:

SKPhoto12: Why 3 lenses with such close focal length? I don't understand the brand logic. One step back or two forward will cover that focal length. Why not market one lens with 12mm focal length? Provide all the electronics and I think it would sell better than the almost finished product.

"At wider focal lengths, small differences in focal length make a much bigger difference than at mid or longer focal lengths. So in reality, these three lenses aren't quite "such close focal lengths" as you might think."

No, "small differences in focal length" by definition make small differences in FOV. It's all relative. 5mm change at 15mm is huge compared to 5mm at 50mm or 500mm.
It's the same relative focal length/FOV relation between a 100mm, 120mm, and 150mm - would anyone carry all three of these to get the same relative change in FOV? It's the same discussion, just at different relative focal lengths.

Link | Posted on Oct 12, 2015 at 14:35 UTC
In reply to:

cph71: i look forward to this. never been a fan of adapters, so great that we have more options

"And if aperture information at the minimum is translated to the camera, it may mean that aperture can be electronically opened and closed prior to, and after, exposure.

The biggest problem with mirrorless bodies is that they allow any lens to adapt to them, but with NO native control at all. Buying a Samyang in FE mount rather than F mount is ridiculous because the F mount lens works on conjunction with Nikon's F aperture controls, whereas with FE mount, it is used wide open, or closed, and doesn't support the very basic of automatic operations.

In essence, without proper electronic or mechanica support, you are buying into a dead end."

So much wrong with this statement, but so little time to correct it all . . .

Link | Posted on Oct 11, 2015 at 22:21 UTC
In reply to:

cph71: i look forward to this. never been a fan of adapters, so great that we have more options

Likely the aperture is still manual. Can't imagine there is room for an aperture actuation motor+mechanism in these compact lenses - just an aperture position sensor I expect.

Link | Posted on Oct 11, 2015 at 22:19 UTC
In reply to:

mr.izo: only problem with these classical design range finder lenses (beside af obviously), is their short flange distance. this does helps build smaller footprint lenses and all that, but on the other hand shows problems with aberations, corner sharpness etc, which was proved many times using these lenses on mrl ff cameras. yes, they can have super sharp center sharpness, distinctive micro contrast and all that, but for some serious wide angle work (architecture, landscape, interiors..) i would be careful and check things first..
edit:
i forgot: usually, also min. focus distance is bigger on rf lenses, that can be very limited sometimes.

The 15/4.5-III is an all new design that is excellent on my A7RII. You do not know what you are talking about. I hope the 10mm is a modern design, not sure if they have modified the 12mm/5.6 from the current rangefinder design.

Link | Posted on Oct 11, 2015 at 22:17 UTC
In reply to:

SKPhoto12: Why 3 lenses with such close focal length? I don't understand the brand logic. One step back or two forward will cover that focal length. Why not market one lens with 12mm focal length? Provide all the electronics and I think it would sell better than the almost finished product.

"Why 3 lenses with such close focal length? I don't understand the brand logic."
They are very close in my book, but who cares now you have choices - you don't have to own all 3 after all.
I have the 15mm and would be interested in the 10 as those two are farther apart (closer than I typically like though). If I just had a ~20mm the 10mm would make even more sense.
For what I shoot when I carry primes, I consider "close" to be significantly within less than ~2x FOV of each other. Many other prime shooters like to carry a lot of lenses that are much closer in focal length.
With today's high MP high IQ full frame cameras if I need something in between my two primes I can usually just crop the wider prime.

Link | Posted on Oct 11, 2015 at 22:12 UTC
In reply to:

falconeyes: @Brittany Hillen:
> Sans an adapter

I read "Sans" is archaic and used by foreign speakers more than native speakers. It is French for without. Also in this thread, I see this word causes quite some confusion.

My question: Did you use this word for a reason, came it natural for you, or thinking about it now, would you use 'without' instead?

Are you a native speaker, US or UK?

I ask because I am curious to learn about the language. My native language is German.

Not unusual to use "sans" at all - I would suspect that those who use it and those who don't are in completely different socio-economic groups here in the USA.

Link | Posted on Oct 11, 2015 at 15:34 UTC
In reply to:

Francis Carver: Wow, an F5.6 single focal length lens, wow. Good lens on bright, sunny days on the beach and on the ski slopes, though.

Not very bright post. Make these lenses f/4 or f/2.8, etc. and they become large and/or poor corners even wide open. f/5.6 is just fine for a wide angle unless you do some things that need a lot of light in a short amount of time.
They are just fine for what they are.

Link | Posted on Oct 11, 2015 at 05:12 UTC

So sad that their are so many uniformed comments regarding the lack of AF with these lenses.
These UWA lenses don't need AF for the vast majority of the folks interested in this focal length on a full-frame A7 series body.

They will be perfect w/o AF+ full electronics as you get:
- auto magnify (if you want that)
- EXIF data recorded on the camera
- Auto lens corrections in post - if you want that too
- IBIS works automatically (if you are hand holding a really long exposure shot in low light, like I sometimes am forced to do)

I already have the 15/4.5-III which is fantastic. The 12 is a little too close in FOV, while the 10mm, if it's good, looks very interesting.

Link | Posted on Oct 10, 2015 at 23:19 UTC as 19th comment | 1 reply

Really it's only two very quick button presses on my A7RII to get to full magnification. In theory the ability to just turn the focus ring to get to some level of magnification is fine, but unfortunately Sony's implementation of manual focusing needs to be modified to be more useful (i.e., put a magnified view in the middle of the image in a small box that can be moved around instead of taking up the whole screen!).

Link | Posted on Oct 10, 2015 at 19:07 UTC as 23rd comment | 1 reply
In reply to:

MikeF4Black: Manual focus? What was Voigtlander thinking?

They were thinking quite smartly. Don't really need AF on such wide full frame lenses. Electronic communication to the camera though is excellent news.

Link | Posted on Oct 10, 2015 at 19:04 UTC
In reply to:

yahoo2u: ....."All three lenses will feature a Sony E-mount for use with full-frame Sony cameras sans an adapter."
.
It is "without an adapter"
.
If you want to throw in french expressions while writing english go to france.

"sans" is a commonly used term here in the USA.

Link | Posted on Oct 9, 2015 at 21:15 UTC
On article What difference does it make? Sony uncompressed Raw (621 comments in total)

At least we now have one option, to some of us it doesn't make a difference, to others it will.

Link | Posted on Sep 23, 2015 at 19:05 UTC as 74th comment

Too bad they don't cover full frame . . . .

Link | Posted on Sep 22, 2015 at 03:02 UTC as 21st comment | 7 replies
On article Sony brings uncompressed Raw to a7S II, a7R II and... (562 comments in total)

Good start, now can they allow 14 bit ARW files in silent shutter mode . . . . or when using LENR, etc. That would be fantastic.

Link | Posted on Sep 16, 2015 at 01:00 UTC as 51st comment

A solution in search of a practical problem.

Link | Posted on Sep 10, 2015 at 20:19 UTC as 192nd comment
Total: 446, showing: 81 – 100
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