Jefftan

Lives in United States United States
Joined on Mar 29, 2011

Comments

Total: 1281, showing: 81 – 100
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no secret except lens mount
otherwise a full frame version of M50 is the camera

with dual pixel for 4k not like M50

Link | Posted on Mar 24, 2018 at 01:29 UTC as 123rd comment
In reply to:

aramgrg: According to photozone, this has 4EV vignetting in the corners. Being f2.8, this lens is nearly useless for night time work.
http://www.opticallimits.com/fuji_x/1037-laowa9f28

what about u crop out the corner so instead of 13.5mm become say 15mm?
This may be a solution otherwise I got Laowa 7.5mm
at F2 corner is almost total dark, ugly and annoying

Capture One and DXO , 2 program that i use, not sure if I can auto crop out corner

Link | Posted on Mar 23, 2018 at 03:50 UTC
In reply to:

Hellraiser: I hope that manufacturers figure out really really soon that the only thing aps-c users really nead at this point is a fast (f1.8 or faster) uwa lens.
All these f2.8 are just saturating the market too much.

= infinitely deep dof
My experience is not like what u said
if focus at infinity for landscape, 15mm equivalent for MFT at F4 not enough DOF
need at least F5.6 for landscape using Laowa 7.5mm for MFT

for APS-C it become F8

Link | Posted on Mar 23, 2018 at 00:30 UTC
In reply to:

ozturert: This is what I want from producers: Tiny lenses. This lens is probably a T5.6 lens due to huge vignetting (4 stops according to Photozone) but even that is fine with me because optically it is quite good and best of all: Tiny!

I have Laowa 7.5
Vinetting is really annoying at F2/F2.8
don't think u can brighten up in post because it is real dark at corner
no image info, bright up ugly color cast appear, have to just accept

Link | Posted on Mar 22, 2018 at 23:29 UTC

this lens is attractive because for the first time, APS-C ultrawide go to 13.5mm instead of 15mm

not sure how significant is 1.5mm

Link | Posted on Mar 22, 2018 at 23:20 UTC as 17th comment | 3 replies
In reply to:

Hellraiser: I hope that manufacturers figure out really really soon that the only thing aps-c users really nead at this point is a fast (f1.8 or faster) uwa lens.
All these f2.8 are just saturating the market too much.

anyone will actually use focus manification and MF every shot?
I won't but maybe someone will

Link | Posted on Mar 22, 2018 at 23:19 UTC
In reply to:

Hellraiser: I hope that manufacturers figure out really really soon that the only thing aps-c users really nead at this point is a fast (f1.8 or faster) uwa lens.
All these f2.8 are just saturating the market too much.

my experience with Laowa 7,5 MFT kens is
hyperfocal useless
need to focus at infinity, for landscape need F5.6 in MFT
for APS-C need F8

I won't buy because at with Sony 10-18 F4 , I can use f4 in low light
if MF, F2.8 or F4 in APS-C focus at infinity, DOF will be too shallow

Link | Posted on Mar 22, 2018 at 23:18 UTC
On article Alien Skin Exposure X3 review (219 comments in total)

I suppose there is no auto adjust like in Capture One
correct?

Link | Posted on Mar 20, 2018 at 09:33 UTC as 55th comment | 1 reply
On article Sigma interview: 'This is just the beginning' (339 comments in total)

I guess it won't happen but if Sony APS-C got a high quality 24-70mm equivalent F2.8 zoom

no need to go full frame
IQ is so close to full frame at ISO 100, only problem is lens

Link | Posted on Mar 19, 2018 at 23:38 UTC as 58th comment
On article Sigma interview: 'This is just the beginning' (339 comments in total)

what is the use of a USB dock
right now sony sigma lens not have it, what's the penalty

anyone know?
thanks

Link | Posted on Mar 19, 2018 at 23:11 UTC as 61st comment | 2 replies
In reply to:

Jefftan: funny to see so many defend price rise
are they paid by Adobe or are shareholders?

price increase from already very high level
hard to see why real customers would defend it with inflation claim

look at their record profit today, real reason is greed

I won't blame someone trying to pirate Adobe because they are not playing fair

if one google, someone already figure out how to pirate Adobe
free, not even $10 needed
but no guarantee that software used to override Adobe security is safe

right or wrong, hard to say
i have guilt if I pirate a small software company charging a fair price
again I have zero guilt pirate Adobe that got huge profit by not playing fair

since when one can't buy something and has to rent
one day we need to rent camera to use it?
same principle apply to software, why can't buy and have to rent is normal

not nomal to me

Link | Posted on Mar 19, 2018 at 08:13 UTC
In reply to:

Adam Sharp: Love your products just not the price .

in terms of price
recent GX9 with 12-60mm lens for $1000 is very reasonable

Link | Posted on Mar 19, 2018 at 06:18 UTC
In reply to:

dbateman: This is interesting information for those upgrading within the Sony system.
However, looking outside an important element to acceptable high ISO is also your lenses. I have a Panasonic GM5 and a Nikon DF. I was surprised that the high ISO performance was equal when shooting and not 2 stops better for the DF as I would have expected. In a recent controlled test, it seems to come down to the lenses. Using my what seems to be softish 24-85mm VR on the Df, once there is noise the acceptable high ISO image sharpness drops. My PZ 14-42mm seems to be much sharper allowing for similar settings. Similarly for my Rokinon 85mm f1.4, is much softer than my Panasonic 42.5mm f1.2.
This worked out as an easy test, both cameras are 16Mpixels so got the exact same frame and used the exact same exposure. They matched, which was kind of a bummer. I will have to test my Nikon AIS lenses next. I still like the handling of the Df, but oddly my m43rds is my go to for interior higher ISO.

I already have GM1
one day when Panasonic GF got 20MP sensor, I will upgrade
not bad at all carry 2 lightweight pancake 12-32 and 35-100
and got 24-200 FL

heavy camera remove the joy of photography

Link | Posted on Mar 19, 2018 at 06:08 UTC
In reply to:

dbateman: This is interesting information for those upgrading within the Sony system.
However, looking outside an important element to acceptable high ISO is also your lenses. I have a Panasonic GM5 and a Nikon DF. I was surprised that the high ISO performance was equal when shooting and not 2 stops better for the DF as I would have expected. In a recent controlled test, it seems to come down to the lenses. Using my what seems to be softish 24-85mm VR on the Df, once there is noise the acceptable high ISO image sharpness drops. My PZ 14-42mm seems to be much sharper allowing for similar settings. Similarly for my Rokinon 85mm f1.4, is much softer than my Panasonic 42.5mm f1.2.
This worked out as an easy test, both cameras are 16Mpixels so got the exact same frame and used the exact same exposure. They matched, which was kind of a bummer. I will have to test my Nikon AIS lenses next. I still like the handling of the Df, but oddly my m43rds is my go to for interior higher ISO.

GX9 will not be a bad choice if have to buy now
I will wait for E-M5 III for what i believe best IS (reason to go MFT)

in 2018 I will avoid all new 16MP MFT camera and all camera without 4k

Link | Posted on Mar 19, 2018 at 06:03 UTC
In reply to:

dbateman: This is interesting information for those upgrading within the Sony system.
However, looking outside an important element to acceptable high ISO is also your lenses. I have a Panasonic GM5 and a Nikon DF. I was surprised that the high ISO performance was equal when shooting and not 2 stops better for the DF as I would have expected. In a recent controlled test, it seems to come down to the lenses. Using my what seems to be softish 24-85mm VR on the Df, once there is noise the acceptable high ISO image sharpness drops. My PZ 14-42mm seems to be much sharper allowing for similar settings. Similarly for my Rokinon 85mm f1.4, is much softer than my Panasonic 42.5mm f1.2.
This worked out as an easy test, both cameras are 16Mpixels so got the exact same frame and used the exact same exposure. They matched, which was kind of a bummer. I will have to test my Nikon AIS lenses next. I still like the handling of the Df, but oddly my m43rds is my go to for interior higher ISO.

14-42pz os panasonic or Olympus
I think both are bad lens, not true?

Link | Posted on Mar 18, 2018 at 13:38 UTC
In reply to:

kobakokh: good news will be if Sony will put A7 series in 1000 USD price range. Otherwise for ordinary photographers, who havve not 2000 USD just for body (lenses by Sony are also very expensive!), best way for get FF camera is... Buy Nikon D600, because of now Canon also cancel own 6D series from even under 1500 USD price range. Then, thanks to Nikon again. Of course, rich photographers can bay Sony and Canon...

look at the above test of dynamic range
if one get A7 or A7 II better just get A6300/A6500

It probably got better IQ and AF than A7 or A7 II
if can't afford $2000 A7 III, wait and who know how long when price will fall to $1500

If $1500 is still too much, buy used or forget full frame

Link | Posted on Mar 18, 2018 at 06:52 UTC
In reply to:

caterpillar: This camera targets the wedding/events shooters, with occassional not uber fast action/sports photography. And there are more pros in this segment than pro PJ/sportshooters combined all over the world. This is smart. Because this is where the true volume of PROs are. In 3-5 years, then they can attack the PJ/sport segment, hopefully, with an a9 mark ii but with 24fps no blackout at 24mp.

This camera basically will cause other brands to re-think their specs and what an entry level camera should be, regardless of format. For Canon, this basically wrecks havoc in their 5d line, or any future 5d-type MILC version. It's not just the price they have to reckon with, it's also the specs to match it. And even aps-c or MFT cameras are not spared. It casts doubt and re-think if you have to get an xt-2, or x-h1, or em1-2, or g9, or gh5, most especially for event shooters.

Good work, Sony!

wedding is also the pro that I know make big money
many pro in other field are straving

Link | Posted on Mar 18, 2018 at 06:49 UTC
In reply to:

dbateman: This is interesting information for those upgrading within the Sony system.
However, looking outside an important element to acceptable high ISO is also your lenses. I have a Panasonic GM5 and a Nikon DF. I was surprised that the high ISO performance was equal when shooting and not 2 stops better for the DF as I would have expected. In a recent controlled test, it seems to come down to the lenses. Using my what seems to be softish 24-85mm VR on the Df, once there is noise the acceptable high ISO image sharpness drops. My PZ 14-42mm seems to be much sharper allowing for similar settings. Similarly for my Rokinon 85mm f1.4, is much softer than my Panasonic 42.5mm f1.2.
This worked out as an easy test, both cameras are 16Mpixels so got the exact same frame and used the exact same exposure. They matched, which was kind of a bummer. I will have to test my Nikon AIS lenses next. I still like the handling of the Df, but oddly my m43rds is my go to for interior higher ISO.

I am only using 12-32mm kit at 12, seem to be quite a good lens
really is because of the lens?

Link | Posted on Mar 18, 2018 at 06:47 UTC
In reply to:

dbateman: This is interesting information for those upgrading within the Sony system.
However, looking outside an important element to acceptable high ISO is also your lenses. I have a Panasonic GM5 and a Nikon DF. I was surprised that the high ISO performance was equal when shooting and not 2 stops better for the DF as I would have expected. In a recent controlled test, it seems to come down to the lenses. Using my what seems to be softish 24-85mm VR on the Df, once there is noise the acceptable high ISO image sharpness drops. My PZ 14-42mm seems to be much sharper allowing for similar settings. Similarly for my Rokinon 85mm f1.4, is much softer than my Panasonic 42.5mm f1.2.
This worked out as an easy test, both cameras are 16Mpixels so got the exact same frame and used the exact same exposure. They matched, which was kind of a bummer. I will have to test my Nikon AIS lenses next. I still like the handling of the Df, but oddly my m43rds is my go to for interior higher ISO.

I have GM5 and high ISO at 6400 is surprisingly good especially after DXO PRIME treatment
It is rate very low in high ISO by DXO
but in reality, if look 100% I see noise similar to my A6500 in ISO 6400

I don't know why but that is a fact
GM5 16MP Panasonic sensor is generally thought to be inferior compare to Sony but what i see is different

Link | Posted on Mar 18, 2018 at 06:45 UTC
In reply to:

Jefftan: "In particular, the backside-illuminated (BSI) and dual gain architecture of most recent Sony sensors helps squeeze every last bit of performance out of these already low noise imaging chip"

This apply to A6500 too?
anyone know?

"a6300 and a6500 do have dual gain architecture, AFAIK. Bill Claff's measurements show a kink in DR at ISO 400."

what is that mean in practical terms?
mean I should use ISO 400 and not ISO 200 for more dynamic range?

Link | Posted on Mar 18, 2018 at 06:41 UTC
Total: 1281, showing: 81 – 100
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