Petroglyph

Petroglyph

Joined on Jan 29, 2012

Comments

Total: 22, showing: 1 – 20
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On LensRentals looks into the Canon EF 16-35 f/4 IS article (61 comments in total)

This lens has replaced my 17-40. IS + ultra sharp & contrasty. 77mm filter = I love it on the 6D.

Direct link | Posted on Aug 8, 2014 at 12:59 UTC as 14th comment

Thank you for announcing this, DPR. Over on Pentax SLR talk there have been a couple of posts to demonstrate the new diffraction correction feature (by showing before & after shots). I'm not sure what processing they're doing, but the "correction" seems to restore some of the mid tone contrast edges that the effect of diffraction can make mushy. I don't think I could get the same effect with just the sharpening slider.

Direct link | Posted on Jul 23, 2014 at 17:14 UTC as 5th comment
On Nikon D810: What You Need to Know article (142 comments in total)
In reply to:

AEY: Did D810 use the same sensor as A7r?

Nope. Lot of other things involved beside they probably have the same sensor. Lossless raw compression is big for me. No AA filter at all ('bout time). Also if the D810 really has a EFCS and dampened mirror. I'd really like that kind of feature on a high rez cam. D810 is still pretty big (probably loud we'll see).

Direct link | Posted on Jun 28, 2014 at 18:03 UTC
On Nikon D810: What You Need to Know article (142 comments in total)
In reply to:

AEY: Did D810 use the same sensor as A7r?

According to CIPA - ISO is measured sensitivity with regard to JPG engine path. So those numbers seem to be a measure of how much the JPGs are "cooked" by the software. The sensors could still be identical and probably are. Interesting that DXO actually shows lower read noise for A7r and D610 at ISO 50. Also Pentax K5 had more DR at ISO 80 (also a Sony sensor).

Direct link | Posted on Jun 28, 2014 at 00:43 UTC
On Nikon D810: What You Need to Know article (142 comments in total)
In reply to:

AEY: Did D810 use the same sensor as A7r?

A7r can set ISO to 50, 64 or 80. Are those "expanded" settings also?

Direct link | Posted on Jun 27, 2014 at 18:33 UTC
On Sony Cyber-shot DSC-RX100 III Review preview (758 comments in total)
In reply to:

Petroglyph: These are very nice informal video cameras, IMO. I like the full sensor readout. Not that sure about loosing 35mm of reach.

Bit rate nearly double. No line skipping.

Direct link | Posted on Jun 24, 2014 at 22:52 UTC
On Sony Cyber-shot DSC-RX100 III Review preview (758 comments in total)

These are very nice informal video cameras, IMO. I like the full sensor readout. Not that sure about loosing 35mm of reach.

Direct link | Posted on Jun 24, 2014 at 00:38 UTC as 96th comment | 2 replies
On Street photography tips with Zack Arias article (151 comments in total)

Interesting video.

Direct link | Posted on May 25, 2014 at 18:12 UTC as 24th comment
On Sony announces pricing and availability for Alpha 7S article (131 comments in total)
In reply to:

Petroglyph: Sony is running with the FE mount cams! They'll release the 16-35 OSS and fast prime soon I bet. Esp. since Canon is releasing theirs (16-35) with identical stats. They're feeling a little competition perhaps?

Too bad. I was hoping Canon would feel a little competition from someone. Prod them along.

Direct link | Posted on May 16, 2014 at 13:26 UTC
On Sony Cyber-shot DSC-RX100 III First Impressions Review preview (2970 comments in total)

I really like the f/2.8 aperture at 70mm. Nice upgrade.

Direct link | Posted on May 16, 2014 at 13:13 UTC as 637th comment
On Sony announces pricing and availability for Alpha 7S article (131 comments in total)

Sony is running with the FE mount cams! They'll release the 16-35 OSS and fast prime soon I bet. Esp. since Canon is releasing theirs (16-35) with identical stats. They're feeling a little competition perhaps?

Direct link | Posted on May 16, 2014 at 13:09 UTC as 17th comment | 15 replies
On Ricoh announces medium-format Pentax 645Z article (160 comments in total)

Hmmm. I think Pentax sells an adapter to put 645 lenses on a K-mount camera. Anybody know anything about that 400mm f/5.6 645 lens?

Direct link | Posted on Apr 15, 2014 at 01:32 UTC as 50th comment | 1 reply

First 90$ for the tripod shoe for the Q and now this! Hmm. Wonder if I can adapt the "06" Q lens to it, it has it's own built-in shutter just like MF. :)

Direct link | Posted on Mar 4, 2014 at 22:54 UTC as 18th comment

Very clever sensor design, Sigma. Photo sites in the bottom two layers are 4X size comp to the top one. On the 75mm fov equiv one make it f/2.0 or 1.8, please.

Direct link | Posted on Feb 11, 2014 at 00:03 UTC as 74th comment | 1 reply

Tilting LCD on MF. It makes excellent sense to me. Also an ultra wide 645 lens. I wonder how many $$$ for that one.

Direct link | Posted on Feb 5, 2014 at 22:18 UTC as 39th comment | 2 replies
On Sony a7R teardown! Roger Cicala gets his hands dirty article (135 comments in total)

Yeah, it only has 29 screws but they didn't count the 11 that rolled off the table and fell into the heater grate. Still works okay after reassembly though.

Direct link | Posted on Jan 30, 2014 at 13:49 UTC as 48th comment
On Phase One announces IQ250 50MP CMOS medium format back article (197 comments in total)
In reply to:

Petroglyph: Looks like Sony is standardizing on the 0.69 crop of the Pentax 645D type sensor. Look for a new 645DII in the future with a Sony CMOS sensor? If it drops the price into normal people range MF might get back in the wedding market. The 645D was always built to the truly rugged stds of Pentax bodies the K3 is rated -10 to 45C and I've used a K5 down to -25C with no ill effects and up to 48C also no problems.

Sony is - this is CMOS. Original Kodak digital MF was .5 crop much less than eons ago. That one was more like 6X45 as they say. The 44X33 is a good compromise though if it results in more cost effective products.

Direct link | Posted on Jan 24, 2014 at 18:26 UTC
On Phase One announces IQ250 50MP CMOS medium format back article (197 comments in total)

Looks like Sony is standardizing on the 0.69 crop of the Pentax 645D type sensor. Look for a new 645DII in the future with a Sony CMOS sensor? If it drops the price into normal people range MF might get back in the wedding market. The 645D was always built to the truly rugged stds of Pentax bodies the K3 is rated -10 to 45C and I've used a K5 down to -25C with no ill effects and up to 48C also no problems.

Direct link | Posted on Jan 24, 2014 at 16:18 UTC as 36th comment | 2 replies
On Sony Alpha 7 Review preview (1606 comments in total)

Thank you for the A7 review DPR. I read through as much as possible given time constraints. I always try to pick up a few ideas (whether I own the camera or not) in a detailed review such as this. Looks like lossy RAW compression could be offset with a firmware option for lossless compression (If the mfr. would do it). Set NR to off - no problem I've done that with nearly every camera I've used. DRO auto? I might try it to see what effect. 1/60 min shutter in auto ISO. True I'm used to more control over that but just shoot manual and use auto ISO while setting aperture and shutter speed. Looks like a good camera which essentially you've said.

Direct link | Posted on Jan 23, 2014 at 20:36 UTC as 186th comment

Maybe DPR will do a first impressions review when they get a production unit in. Never know what quality will turn out to have. Thanks for the first look. It looks quite a bit larger than a Q, though. Maybe that flash tilts back for bounce?

Direct link | Posted on Jan 9, 2014 at 22:03 UTC as 44th comment
Total: 22, showing: 1 – 20
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