Petroglyph

Petroglyph

Joined on Jan 29, 2012

Comments

Total: 239, showing: 1 – 20
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On article Medium-format mirrorless: Hasselblad unveils X1D (1163 comments in total)
In reply to:

stevo23: Same sensor size, Mp and price as the Pentax 645Z? (Lenses not withstanding...)

645Z = 7000$ This Hasse = 9000$. So if 7 is the same as 9, then you're correct.

Link | Posted on Jun 22, 2016 at 17:50 UTC
On article 2016 Roundup: $1200-2000 ILCs part 2: Full-Frame (282 comments in total)
In reply to:

Petroglyph: About the K1: 'Focus accuracy with fast lenses can also suffer, a problem inherent to DSLRs.'

No and No is my response to this.

@Rishi Sanyal :
'How many people self-calibrate their DSLRs & lenses?'

I always have several lenses that are calibrated in the bag and I've also shot profiles for many of them.

'This is not really something up for debate: on-sensor focus measurement is simply more accurate than a secondary sensor. '

Rather - on-sensor focus could be more accurate - but could also become confused by internal reflections, etc. The Sony 24-70FE I used to own was pretty bad at focus accuracy it seemed and one couldn't do much about it. So...

And the K1 has pretty fast/accurate CDAF as far as that goes.

Link | Posted on Jun 11, 2016 at 18:54 UTC
In reply to:

Jesaja: Hey Sigma and Tamron, come back to K mount battle field.

Maybe Zeiss can produce some more ZKs.

Link | Posted on Jun 11, 2016 at 18:41 UTC
In reply to:

Petroglyph: New hybrid AF system for video? + new pulse motor 55-300 lens for quiet operation during video? Pentax have been busy.

Maybe they will in the next high-end aps/c. This is the entry level line, I think. These moves seem to be getting things ready for more video improvements.

Link | Posted on Jun 11, 2016 at 18:35 UTC
On article 2016 Roundup: $1200-2000 ILCs part 2: Full-Frame (282 comments in total)

About the K1: 'Focus accuracy with fast lenses can also suffer, a problem inherent to DSLRs.'

No and No is my response to this.

Link | Posted on Jun 10, 2016 at 02:59 UTC as 36th comment | 31 replies

New hybrid AF system for video? + new pulse motor 55-300 lens for quiet operation during video? Pentax have been busy.

Link | Posted on Jun 10, 2016 at 02:39 UTC as 19th comment | 2 replies
On article Pentax K-1 Pixel Shift Resolution: Updated Field Test (209 comments in total)

On a humorous note. Be careful you don't typo 'pixel shift' or you'll get caught out for posting swear words. :^)

Link | Posted on Jun 3, 2016 at 21:05 UTC as 57th comment
On article Pentax K-1 Pixel Shift Resolution: Updated Field Test (209 comments in total)

Thank you for the updated article, DPR. Silkypix seems to be stable in the Win10.1 partition. Now pixel shift PEF will follow the same work flow as Foveon. DCU -> Tiff -> PP software of choice.

Link | Posted on Jun 3, 2016 at 21:03 UTC as 58th comment | 1 reply
On article Waterfails: We test Pentax K-1's Pixel Shift (225 comments in total)
In reply to:

Petroglyph: About what one would expect. I like the shift results I'm seeing with static/studio product photography (processed in DCU/Silkypix). & it's pretty darn good w/o pix shift high rez anyway, if there is anything that can move in the scene. The 5-axis SR is allowing some very nice hand holding results as well.

I noticed you posted a shot with 28-105. How did that lens stack up to the 24-70 for your less than ideal lighting conditions?

Two very pertinent points. Thank you.

Link | Posted on May 31, 2016 at 22:18 UTC
On article Waterfails: We test Pentax K-1's Pixel Shift (225 comments in total)
In reply to:

JacobSR: Aren't you suppose to turn off the Shake Reduction when Pixel Shift? Please tell us if you disabled Shake Reduction or not!

I thought it automatically disable SR in that mode. I'll check to make sure.

Link | Posted on May 31, 2016 at 21:52 UTC
On article Waterfails: We test Pentax K-1's Pixel Shift (225 comments in total)

About what one would expect. I like the shift results I'm seeing with static/studio product photography (processed in DCU/Silkypix). & it's pretty darn good w/o pix shift high rez anyway, if there is anything that can move in the scene. The 5-axis SR is allowing some very nice hand holding results as well.

I noticed you posted a shot with 28-105. How did that lens stack up to the 24-70 for your less than ideal lighting conditions?

Link | Posted on May 31, 2016 at 21:50 UTC as 81st comment | 2 replies
On article Keeping the faith: Pentax K-1 video overview (100 comments in total)
In reply to:

zzzxtreme: Will there be a smaller version (with same sensor but mirrorless and less features) somewhat?

The new sensor is FF-645 and has a much greater area than the current 44X33 crop-645. The pixel size is similar but the 100+ pixels are spread out over a greater area. Original 645 glass was designed for FF-645 format and Pentax also made a lot of 6X7 glass that can be used on their 645 cams. 6X7, you might be aware, is an even larger format.

Link | Posted on May 17, 2016 at 14:00 UTC

It proves Sigma is not ignoring Pentax. I have one of those that I'll be sending in for the part replacement. If Sigma releases some more 'Art' lenses in K-mount in the future it seems they'll have already checked the fit. Way to go Sigma!

Link | Posted on May 13, 2016 at 12:57 UTC as 14th comment
On article Keeping the faith: Pentax K-1 video overview (100 comments in total)
In reply to:

Sunshine4784: Well, truth be told, Pentax is not that third party friendly. Right now, there's an issue that few sigma lenses are not compatible with K-1 which creates scratches. Base on their interview, Pentax didn't even let other companies about their new camera and K mount informations to support more lenses.

Alex; Didn't Nikon even have a lawsuit against Sigma once?

Link | Posted on May 12, 2016 at 14:56 UTC
On article Keeping the faith: Pentax K-1 video overview (100 comments in total)
In reply to:

Sunshine4784: Well, truth be told, Pentax is not that third party friendly. Right now, there's an issue that few sigma lenses are not compatible with K-1 which creates scratches. Base on their interview, Pentax didn't even let other companies about their new camera and K mount informations to support more lenses.

Huh?

Link | Posted on May 12, 2016 at 01:08 UTC
On article Keeping the faith: Pentax K-1 video overview (100 comments in total)
In reply to:

Sunshine4784: Well, truth be told, Pentax is not that third party friendly. Right now, there's an issue that few sigma lenses are not compatible with K-1 which creates scratches. Base on their interview, Pentax didn't even let other companies about their new camera and K mount informations to support more lenses.

Sunshine: Canon, Nikon & Ricoh are the same with regard to third party lens makers. They'd rather sell you OEM.

Link | Posted on May 11, 2016 at 23:46 UTC
On article Keeping the faith: Pentax K-1 video overview (100 comments in total)

The K1s might be getting hard to come by as I'm seeing a lot of 'temporarily out of stock' messages on the retail sites. This reminds me of the original D800 roll out when folks apparently often had to wait quite a while to get one.

Link | Posted on May 11, 2016 at 00:41 UTC as 23rd comment | 1 reply
On article Keeping the faith: Pentax K-1 video overview (100 comments in total)
In reply to:

zzzxtreme: Will there be a smaller version (with same sensor but mirrorless and less features) somewhat?

Nobody (outside of Ricoh) knows. The big recent rumor is Ricoh inked a deal for Sony's 100ish MP FF-645 sensor that would probably end all of the comparisons with digital medium format type discussions, IMO. What if they put IBIS & pixel shift in medium format down the road one never knows.

Link | Posted on May 11, 2016 at 00:36 UTC

Very impressive result.

Link | Posted on May 9, 2016 at 13:21 UTC as 132nd comment
In reply to:

Sunshine4784: Well with my calibrated Ezio display K-1 with pixel shift look better than D810. But this mode is very limited tho. For landscape, the scene shouldn't move or the image will be like multiple exposed. Studio? Only natural light or continuous light are usable. Also, without tripod, it's not even possible to get great results with pixel shift mode. So I can say, quite meaningless mode unless they add more features especially enable sync mode for studio still life.

As I understand it, the camera only uses the first image for parts where motion has been detected and all four images for parts where little or no motion is detected. So the processing is a bit more sophisticated than what is assumed.

Link | Posted on May 6, 2016 at 00:18 UTC
Total: 239, showing: 1 – 20
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