siggo

Lives in Australia Adelaide, Australia
Works as a RetiredAutomotive Engineer
Joined on Jan 5, 2009

Comments

Total: 43, showing: 1 – 20
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On article Pentax K-1 Pixel Shift: An update (96 comments in total)

Good start. Now would be the appropriate time to establish a policy to include use of bundled software in all reviews. Use third party (Adobe) as well if you wish to show what might be achieved, but learn from this that review should always reflect what the customer would receive.

Link | Posted on Jun 2, 2016 at 05:17 UTC as 37th comment | 6 replies
On article Waterfails: We test Pentax K-1's Pixel Shift (225 comments in total)
In reply to:

walgarch: This test has legitimacy, but unfortunately the methodology is flawed.

There are going to be landscape photographers who are interested in this feature and it will influence their possible purchase.

Too bad ACR was used to do RAW conversion. It's obvious that it can't apply motion correction correctly. This flaw has been pointed out on various occasions in various posts and even in TheCameraStoreTV's review of the K-1 ( https://youtu.be/87yGmD71nyA?t=13m6s ) I would've hoped that DPR would be more thorough in this regard instead of giving the impression that pixel shift artefacts are more pronounced and ugly than they really are. And to also point out that applying motion correction via Pentax's silkypix program provides better motion correction than through the in camera JPEG conversion.

The cynic in me thinks the damage is already done and that people will assume pixel shift is not worth it; the optimist in me hope that Adobe will actually support Pentax features more thoroughly

I think the Camera Maker's own raw should always be used at least in addition to ACR. I know the logic of using one raw converter for all cameras is to provide uniformity in comparisons, but it has problems as follows:
(1)Camera maker surely has accurate access to it's own specific needs, and ability to incorporate and tune conversion software algorithms without the need of reverse engineering.
(2)Camera makers provide their conversion software usually as part of purchase.So why isn't it tested with the camera? Sure use ACR as well to show how it compares..
(3)As an analogy, should motoring magazines test cars only with an aftermarket electronic engine/trans/suspension etc control unit "set to the driver's taste"to facilitate comparisons ?

Link | Posted on Jun 1, 2016 at 04:27 UTC
On photo Biking in the morning in the Landscape Photo with Sun Rays challenge (2 comments in total)

Excellent image, congratulations

Link | Posted on Mar 10, 2016 at 13:47 UTC as 1st comment
On photo Before Sunset in the Landscape Photo with Sun Rays challenge (9 comments in total)

I'm curious about the horizontal line about 1/8th down from the top. Is it from compositing?
Anyway, nice work and congratulations.

Link | Posted on Mar 10, 2016 at 13:45 UTC as 2nd comment | 2 replies
In reply to:

Kamox: Sure not the same thing, but 1/5 of the price:
if you attach this (Leica-expensive) TS lens (which has a usable area of 36x44mm) to a Canon 5DS R, you'll end up with 92 MP.
http://www.hartblei.de/en/sr40if.htm

Soooo ..LJ-Eljot....If you stitch two exposers together do you get one flasher.?

Link | Posted on Feb 9, 2016 at 03:39 UTC
On article Behind the Camera: A conversation with Peter Hurley (62 comments in total)

Interesting and informative. The 43 minutes flew past!

Link | Posted on Dec 30, 2015 at 14:17 UTC as 22nd comment
In reply to:

justmeMN: I suspect that the future of still photography is pulling still images out of short high resolution videos. It certainly would help in capturing a "decisive moment".

http://www.imaging-resource.com/PRODS/E100/E1RA.HTM

Spray & Pray with pre shutter capture in 2001 on Olympus E-100RS

Wonder how successful it was.
Sorry a bit off topic

Link | Posted on Dec 8, 2015 at 13:22 UTC
On article Sony brings uncompressed Raw to a7S II, a7R II and... (562 comments in total)

Wonder if there is any chance of the "ancient" A7R picking this up? (missed out on shutter shock upgrade due to mechanical limitations )

Link | Posted on Sep 16, 2015 at 02:43 UTC as 44th comment | 2 replies
In reply to:

Sports Shooter: all sounds great but why 72mm filter thread? why not standardize with 77mm ( 16-35, 24-105, 70-200)?

Yep, but can you still use the lens hood?

Link | Posted on Aug 27, 2015 at 13:46 UTC
In reply to:

Mike Gerstner: Canon DPP........

It would be interesting to see a couple of the images processed in DPP to see if the native software deals with the shadow lifting any differently/better(?) than ACR........or supply the raws to allow a couple of the users to have a go at it.

Thanks, MIke

Agree. I think DPP should always include some images processed using the camera maker's software in addition to OOC JPEGS.

Link | Posted on Jul 15, 2015 at 13:40 UTC
On article Olympus debuts 'Anywhere Classroom' video series (43 comments in total)
In reply to:

Artpt: Is there any information on watch camera was used to film this tidbit?

Says at end ..all shot on OM-D EM-1.
(Nice demo of blue CA at 3:01 and other places. shooting trees against bright sky! )

Link | Posted on Jun 27, 2014 at 03:28 UTC
On article A GoPro Hero's journey into a dishwasher (167 comments in total)

Never expected to see this sort of stuff on dpreview

Link | Posted on Jun 5, 2014 at 12:05 UTC as 72nd comment | 1 reply

Umm Sony, could you PLEASE do this for A7R???

Link | Posted on May 14, 2014 at 13:59 UTC as 22nd comment | 3 replies

Thanks for posting this interesting article.
Would be very interesting to see a blog on how you actually get in and adjust a lens.
Machine name " POLC " Precision Optical Lens Checker

Link | Posted on Apr 1, 2014 at 02:41 UTC as 84th comment

Very clever marketing

Link | Posted on Mar 28, 2014 at 10:05 UTC as 32nd comment

Found this..http://www.imatest.com/docs/sharpness/
Sorry for all this off topic. Cheers

Link | Posted on Mar 20, 2014 at 10:43 UTC as 6th comment
In reply to:

siggo: Am I the only one who thinks that a LENS test should test the LENS and it's optical properties? Then we can choose LENSES . These tests include the CAMERA as well. Sony offer adaptors for other lenses. How can we choose those lenses when their sharpness was determined on a different (possibly inferior) sensor. Sony will be delighted that their lenses appear fantastic here, in part due to their 36Mpix sensor.
Obviously as a Lens/camera combination checking sharpness etc these tests have an important role, but perhaps Sony has opened up the need for camera independent lens tests to be included on sites like this. Apologies for long post and maybe it belongs in forum section

Can't see edit button now.My comment may be wrong, need to check how MTF 50 is found. Apologies. However reviewer himself said good result partly due to sensor.

Link | Posted on Mar 20, 2014 at 09:50 UTC

Am I the only one who thinks that a LENS test should test the LENS and it's optical properties? Then we can choose LENSES . These tests include the CAMERA as well. Sony offer adaptors for other lenses. How can we choose those lenses when their sharpness was determined on a different (possibly inferior) sensor. Sony will be delighted that their lenses appear fantastic here, in part due to their 36Mpix sensor.
Obviously as a Lens/camera combination checking sharpness etc these tests have an important role, but perhaps Sony has opened up the need for camera independent lens tests to be included on sites like this. Apologies for long post and maybe it belongs in forum section

Link | Posted on Mar 20, 2014 at 07:59 UTC as 7th comment | 1 reply
In reply to:

OBI656: Because of this update I purchased A7R and what a pleasant surprise ... If Zeiss optics will proof their reputation I will damp my CANON system.

Obviously your store is not in Hungary or you would be needing to get permission from the strangers....tears or no tears!!! 8-)

Link | Posted on Mar 20, 2014 at 07:24 UTC
In reply to:

jhsymington: An update of my post two hours ago - I ran the update again on the A7R and it worked second time round. Ignore the fixed red light but otherwise dead camera and just try again - the update will start halfway through but the second time it concluded successfully. Not a great process Sony!

From posts on other forums there are a lot of users "making errors" some needing 5 or more tries...

Link | Posted on Mar 20, 2014 at 07:19 UTC
Total: 43, showing: 1 – 20
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