Messages

1

Lenses / Re: New Sigma 35mm f/1.4 for Canon getting awesome reviews

« on: December 07, 2012, 08:49:56 AM »

The following quote was copied from a newletter email just received from DxO...

"Among the new lenses supported by DxO Optics Pro v8.1 is the Sigma 35mm F1.4 DG HSM for Canon, the first very-wide-angle lens in Sigma's new Art line. DxOMark tests place this lens among the very best ever measured for Canon mounts, which will delight lovers of landscapes, portraits, and even macrophotography who are looking for the best resolution-to-price ratio. The complete results will be available soon on DxOMark."

Looking forward to seeing the full test results in due course.

Cheers,
Mick

2

Lenses / Reikan FoCal EF 24-70L version comparison

« on: November 21, 2012, 04:28:07 AM »

Just read a very interesting blog post on the Reikan website comparing aperture sharpness and focus consistency across a sample of original and new versions of the EF 24-70 f2.8L lens.

http://www.reikan.co.uk/focalweb/index.php/2012/11/ef-24-70-vs-ef-24-70-ii-aperture-sharpness-comparison/

Cheers,
Mick

3

Lenses / Re: Canon EF 24-70 f/4L IS Coming [CR3]

« on: October 31, 2012, 09:08:11 AM »

I bought my 5D3 and 24-105 f4L IS kit back in April and I have to say that I've been very happy with the results that the 24-105 produces.
Things such as cost and IQ being approximately equal, would I...
Buy a 24-70 f4L IS to complement my 24-105 f4L IS?    No - I'd rather go for a f1.4L wide angle prime to complement the zoom.
Trade in my 24-105 f4L IS against a 24-70 f4L IS?        No - I can't see that I'd gain much by doing that.
Trade in my 24-105 f4L IS against a 24-70 f2.8L II?      Well, I do regard that as an upgrade and it's not out of the question one day, but...
Trade in my 24-105 f4L IS against a 24-70 f2.8L II IS?    Absolutely!!   

The point I'm trying to make is that if Canon intends to replace or supplement the 24-105 f4L IS (kit) lens with a new 24-70 f4L IS (kit) lens, that in itself won't make a lot of difference to me and, I suspect, probably not to many others who already own the 24-105.   I'm happy to wait a year or so to see what happens with the 24-70 f2.8L II.  Either there will be an IS version as many here hope, or the price of the f2.8L II will drop to a more affordable level.   

4

5D MK III Sample Images / Re: Post Your Best Hi-ISO/Low Light 5DIII Shots!

« on: October 19, 2012, 05:45:12 AM »

This image was taken at around 19:30 on Monday at a wet, windy and not that well lit Newquay station in Cornwall.   It's not exactly the final shot I was hoping for when I set out earlier in the day, in rather better weather, to travel to all five terminal stations on the Cornish rail network, but it does illustrate the high ISO capabilities of the 5D3.

5D3 + 24-105 f4.0L @ 24mm, 1/6 second, f5.6, 10000 ISO

5

Technical Support / Re: AFMA Misbehaviour

« on: September 16, 2012, 06:04:02 PM »

Hi drolo61.   The files you want are in a directory called Target Images in the zipped product issue directory delivered by Reikan.   

6

Technical Support / Re: AFMA Misbehaviour

« on: September 16, 2012, 05:27:44 AM »

The manual is less than perfectly clear about what happens when you have set AFMA for some lenses and not for others.
I would expect that, if you have the "Adjust by lens" option selected, and mount a lens which has not yet had any AFMA registered, then the default option should be to do nothing and NOT apply whatever value may be in the "All by same amount" option.
I don't know for sure how it got set, but as I said above, my camera had a value of -8 set in the "All by same amount" option.   I've just set that value back to zero and I have also done the AFMA adjustment on my 70-200 f2.8L.   I'll have to make sure that I do the AFMA straight away if or when I get any of the lenses still sitting on my shopping list.
From what others have said, it would appear that very occasionally the camera might not recognise lenses that have previously been registered in the AFMA system.

7

Technical Support / Re: AFMA Misbehaviour

« on: September 15, 2012, 06:28:53 PM »

I'm on firmware version 1.1.2.    I was shooting manual with auto ISO.   I also used my 24-105 today, and the shots I took with that are perfectly sharp.

8

Technical Support / AFMA Misbehaviour

« on: September 15, 2012, 04:34:23 PM »

I've been lurking here for quite a while now, and now I've come across something that has prompted my first post.

I have a 5DMkIII body, 24-105mm f4L, 16-35mm f2.8L and a very recently acquired 70-200mm f2.8L IS II which has replaced my 70-200mm f4L IS lens.   I had used Reikan FoCal to do an AFMA adjustment on my older lenses, but have not yet done so for the new 70-200 f2.8.   Today was the first time I took the new big zoom out for a day's photography and I couldn't undestand why it didn't seem to be focusing properly when looking at images zoomed in on the camera's LCD.   I have just uploaded the day's images onto my PC and had a 100% view of the RAW images.   A lot of them were OOF, and I was quite surprised to see non zero values in the AFMA field of the EXIF data.   

The camera identifies the 70-200 f2.8 L IS II correctly in the AFMA menu, and both W/A and Tele settings are still showing as zero.   The menu option to adjust by lens is selected, so the camera should NOT have taken it upon itself to apply any AF adjustments to the shots taken with the new lens.   There is an AF menu option which reads "All by same amount -8", but I have never selected it.   Could this be telling the camera to override the zero values for my new lens because it hadn't been completely registered with the camera?

Has anyone else come across this feature?   Is it a bug?

I'm going to delete the AFMA settings for the 70-200 f4L IS, as it's being sold, then run FoCal against the new big zoom tomorrow morning and hope that will sort out the problem for me.

Cheers,
Mick