tony brown

tony brown

Lives in Ireland Ireland
Works as a technician
Joined on Nov 21, 2001


Total: 10, showing: 1 – 10
On Nikon D5500 real-world samples article (129 comments in total)
In reply to:

earthbound_ca: Why is it the long grass and rocks have been viewed 956 times (as I write this) and the young lady on the stairs has been viewed almost 2,500 times? People don't like rocks?

It is because of the composition of the grasses picture. No point of interest unless it's the TINY ship on the horizon; the eye just drifts off to the left with nothing to stop it but most of all, the horizon midway up the image.
That's my excuse anyway.

Direct link | Posted on Mar 7, 2015 at 11:56 UTC
On Mid-range Mirrorless camera roundup (2014) article (21 comments in total)
In reply to:

lawamainn: When it comes to value for money, this camera is unbeatable! The resolution power alone makes it a winner. And the feature set is pretty awesome as well. I love it!

To which camera are you referring?

Direct link | Posted on Feb 18, 2015 at 21:19 UTC
On Canon EOS 5DS / SR First Impressions Review preview (2340 comments in total)
In reply to:

malcolma: tony: take a look at the explanation of how Nikon did the self-cancellation in the D800E. I sure it'll be the same for Canon.

Thank you 'malcolma'. I found the item you refer to on page:-
It seems a complicated way of achieving the result. Cameras converted to IR use usually remove the 'hot mirror' and replace with a calculated thickness of plane glass to keep the same optical path length for focussing, etc..
Still, I assume Canon/Nikon know the optical business unless the technique is goverened by the need to use standard components where possible.

Direct link | Posted on Feb 11, 2015 at 17:25 UTC
On Canon EOS 5DS / SR First Impressions Review preview (2340 comments in total)

What exactly is a 'self-cancelling filter' quoted in the introduction? I thought cameras had either an anti-alias filter or not. Does the phrase 'self-cancelling' imply that there is an anti-alias filter plus another which effectively cancels the first?

An explanation would be of interest and welcome.

Direct link | Posted on Feb 11, 2015 at 12:17 UTC as 106th comment | 1 reply
On 1939: England in Color (part 1) article (222 comments in total)

I have just viewed and enjoyed Parts 1 & 2 of your 1939 photo restorations - the year of my own birth. Particularly, I enjoy the thread of your family's story connecting these widely distributed pictures together just like a gentle soundtrack. It brings them to life and together and much more than otherwise.
Very well done and thank you for sharing!

Direct link | Posted on Sep 17, 2014 at 20:08 UTC as 5th comment
On Cold War camera: 1950s Berlin in color (part 1) article (120 comments in total)
In reply to:

Valant: Anyone any idea what make the double decker bus (DD) in picture Nr. 8 is?
Probably Daimler, they launched the first motorised DD in 1898, but it looks like a 1940's British bus. I tend to associate DD's with London and Britain in that era.

Many British DDs were Daimler in the 50s, and Leyland (before they became British Leyland incorporating Morris Austin vehicles).

Direct link | Posted on Sep 1, 2014 at 13:11 UTC
On Exposure vs. Brightening article (23 comments in total)

I tripped over this 'ISOless' issue in some large threads recently and have found your article above to be the source material. It has given me much food for thought and practical experimentation with my Canon 6D. From sensorgen, I find the 6D to be a partial ISOless camera, ISOless from about 3,200 ISO, and have tried some experiments comparing brightened RAWs (in ACR) at 3,200 to those taken at ISO 102,800.

As you state, the noise is just the same but the gain of the ISO 102,800 setting has blown highlights when compared to the 3,200 + brightening. Note, there seems to be a considerable colour difference between the two methods, greatly reduced by also adding extra brightening to the green channel. So my tests continue with the prospect of never increasing ISO past the 3,200 setting unless the DR of the scene is low.

Thank you for the stimulating post. I will have to rethink much on the back of it. Empirical results will be my yardstick but thanks again.

Cheers, Tony.

Direct link | Posted on Jul 14, 2013 at 16:57 UTC as 3rd comment | 2 replies
On Happy Holidays from dpreview article (108 comments in total)

My greatest debt to DPReview is for the cameras you stopped me buying with your in-depth reviews. You have saved me thousands! I am a sucker for the latest new gimmick.
With deepest gratitude and best wishes to ALL at DPReview.

Direct link | Posted on Dec 25, 2012 at 11:51 UTC as 69th comment
On Just Posted: Pentax K-01 review article (355 comments in total)

So near and yet so far.

Seen this review and another showing live in human hands - it is big.

If it was Full frame, same mount, 5 Fps for RAW AND HDR groups, preferably faster auto focus, and not too much dearer, I would buy it for all my old K-mount lenses.

The only advantage of the APS-C for FF capable lenses would be the smaller size but it isn't. The size is no problem as a user but would also almost do for a FF so the loss is the rest of the usable lens field in a camera whose major selling feature is the ability to mount all Pentax K lenses.

I await a Pentax FF follow-up with great anticipation. The K-01 is pointed right at the appropriate market and proved they are capable of delivering just what is needed, so let's be having it.

Direct link | Posted on Jun 5, 2012 at 11:02 UTC as 10th comment

I hope this is just a simulation because I don't think they will ever have to make one!

Gold plated, crocodile-skinned, 35mm Leicas may well be 'gilding the lily' but where's the 'lily' here?

Direct link | Posted on Oct 14, 2011 at 07:55 UTC as 30th comment
Total: 10, showing: 1 – 10