September 16, 2014, 06:05:28 PM

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Topics - Sporgon

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Street & City / Brugge - Belgium
« on: August 12, 2014, 03:03:10 PM »
Been over to Belgium to photograph the first world war cemeteries in conjunction with the 100th year anniversary of it's beginning. Quite, quite unbelievable, the loss of life defies belief.

Here's a shot of Brugge or Bruges in West Flanders, an area that saw some of the heaviest casualties in WW1.

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Canon EF Prime Lenses / Canon EF 28mm f1.8 USM
« on: April 25, 2014, 12:47:18 PM »
I see no one on CR has been brave enough to admit to owning the 28/1.8 let alone posting any shots with it.

A much maligned and misunderstood lens, it's reputation in tatters from the on line review specialists.

Actually it's damn sharp in the broad centre from 2.8 onwards and then gets quite sharp again at the very edges having had a dog's breakfast somewhere in between. Can't match the excellent 28/2.8 IS towards the edge of frame but then it doesn't vignette at f2.8.

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EOS Bodies - For Stills / Thought on a full screen histogram option
« on: September 18, 2013, 11:00:01 AM »
My main use of the rear LCD display is to view the exposure via the histogram. As many have found, judging the exposure from the picture can be very misleading, but 'blinkies' can be helpful. However the histogram is always very small, and subtleties regarding small amounts of data at either extreme end can be inconvenient if not nigh on impossible to see.

I'd like an option on the higher end camera where you can select the whole, or virtually the whole of the rear LCD to display a large histogram - so I can see it properly. With this enabled you could then toggle to the picture via the 'info' button or what ever. The extremes of the histogram could blink if the data is beyond the sensor.

This would be very useful to me. Anyone have thoughts on this facility ?

4
Site Information / The 10 Commandments of CR
« on: August 03, 2013, 05:14:11 PM »
Here's a light hearted topic for the weekend.

It's a great community on CR  - generally. The only forum I bother with, and I think it is the same for plenty of others.
But there are some real pet topics, so here's a tongue-in-cheek, spoof 10 Commandments adhered to by the CR community.

I've got two, others can finish it. The more amusing the better.

1. Thou shalt purchase a 135L and pay homage to it daily.

2. Thou shalt only ever shoot in full RAW ( even for facebook ) .........................


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Being blokes, and we don't do manuals, can someone tell us how to configure the 6D to enable direct focus point control similar to Custom Function C.FnIII / 3 on the 5D mark ii ?

We have found the C Fn to enable direct AF selection with the 8 way controller, but there then seems to be no way of quickly returning to the centre point only as there is on the mkii by pushing the toggle in. I had assumed that the obvious button would be to press the 'set' button, but this seems to be disabled when having direct control of the 8 way controller.

On the C Fn menu for the 'set' button it doesn't list anything to do with AF.

Confused  :-[

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Lenses / Conflicting results between The-Digital-Picture & Photozone
« on: April 08, 2013, 09:53:49 AM »
Is anyone else confused by the apparent differences in resolution tests performed by The Digital Picture and Photozone ?

On TDP's ISO 12233 charts they can show very different results to photozone's MTF graphs.

For example take the 70-300L and 70-200 f4 IS results; two lenses which people looking for a tele zoom are very likely to be having to decide between. Using 70mm as an example, on TDP's 12233 charts the 70-200 is clearly ( pun intended ) way ahead of the 70-300L, I mean it is like night and day, whereas on Photozone's graphs the 70-300L is clearly showing better results.

Another example is the resolution of the 24-105L. TDP clearly shows this lens to be at its over-the-frame best at 70mm / f8, whereas photozone's results do not confirm this - at all. They show it to be better in the 35-50 region.

In 'field' applications my experiences would suggest photozone is giving a truer picture.

Could these differences be the result of copy variances ? if so it is very disturbing for someone wanting to purchase a high quality lens.


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Lenses / Variable length zooms and dust
« on: December 22, 2012, 01:21:50 PM »
I have a question regarding zoom lenses that change their physical length, such as 24-105L,  70-300L etc, and the potential for them to ingest dust, pollen etc into both the camera body and themselves by sucking and blowing air in and out.

Is this a fact ?

If this is the case I am puzzled as to why when fitting a weather sealed zoom of this type onto a weather sealed body you don't have problems in zooming the lens outwards against a vacuum that would be created in the body.
Now I know that weather sealed doesn't mean airtight, but even so I would expect resistance when trying to zoom in or out quickly as the air tries to pass the weather sealing gaskets.

Can anyone explain

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Technical Support / Mirror fallen out of 5D - self repair ?
« on: December 14, 2012, 07:58:59 AM »
Our Building Panoramics 5d MK1's mirror has finally fallen off its perch after seven years.

I know this is a design fault and Canon modify the mirror free of charge, but has anyone tried to glue the mirror back themselves ? It seems like a very light dot of super glue on the four little cushions / adhering points would fix it.

I'd appreciate experience from anyone who's fixed this themselves.

Thanks,

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