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Archive 2009 · Leica R for Canon telephoto alternatives
  
 
wayne seltzer
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p.4 #1 · Leica R for Canon telephoto alternatives


And three right side crops, same order:






















Apr 04, 2009 at 06:34 AM
wayne seltzer
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p.4 #2 · Leica R for Canon telephoto alternatives


Leica was at f5.6, Canon at f8 and Zeiss at ~f4.
Ran out of land to move closer to get Zeiss shot with same viewing angle as the others.
Canon was clearly worse at f4 and really bad at 2.8, where as Leica is solid throughout aperture range.

Robert, does this Leica shot look ok?

Apr 04, 2009 at 06:41 AM
robsteve
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p.4 #3 · Leica R for Canon telephoto alternatives


Wayne:

They now look like they should. Look at how sharp the edge transition of the siding and shingles is compared to the Canon.

On the DMR I will sometimes get moire on siding like this. I know it is sharp when I see that. It usually shows up as you open the shot in Lightroom, but then disappears seconds later as Lightroom just deals with it.

Robert
Apr 04, 2009 at 03:26 PM
wayne seltzer
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p.4 #4 · Leica R for Canon telephoto alternatives


Thanks Robert.

Waiting on USPS to deliver your APO 2x extender and my AF confirm chips so I can do some 180 + extender testing.

Apr 04, 2009 at 04:11 PM
telyt
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p.4 #5 · Leica R for Canon telephoto alternatives


robsteve wrote: On the DMR I will sometimes get moire on siding like this. I know it is sharp when I see that. It usually shows up as you open the shot in Lightroom, but then disappears seconds later as Lightroom just deals with it.

Lightroom cleans up the moire? Kewl, tell more.

Apr 04, 2009 at 04:44 PM
Paul Yi
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p.4 #6 · Leica R for Canon telephoto alternatives


I think Apo 180/3.4 would be better for a distant shot like this...
I tried it when I had it, and it looked awesome when I cropped it to the limit.

Apr 04, 2009 at 06:59 PM
wayne seltzer
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p.4 #7 · Leica R for Canon telephoto alternatives


Ok, got the 2.0x APO extender late yesterday and tried some shots with 180 APO 2.8. Used same test scene to see how much is lost with extender.
I think the extender will degrade the picture more on longer shots like this test shot but it still did an amazing job. This was shot across a small lake.
100% center crop is the 2nd shot. Loss of IQ due to extender was much less and almost zero on closer shots. I will try more shots tomorrow.

Apr 06, 2009 at 09:35 AM
wayne seltzer
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p.4 #8 · Leica R for Canon telephoto alternatives


This was taken at 1/50 on tripod with MLU and remote trigger. I will take another shot tomorrow with more light.

Apr 06, 2009 at 09:59 AM
wayne seltzer
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p.4 #9 · Leica R for Canon telephoto alternatives


Ok, played around with the 180 APO 2.8 and 2.0x APO extender combo some more today in better light and found using my Hoodman loup to really help my live-view focusing of this lens in broad daylight. There is only a little loss in IQ at long distant (near infinity) shots and none when shooting subjects at closer ranges.
Just an amazing lens and extender and I am very happy with it. The focusing throw is alot shorter of course than my 100 APO macro and requires alot of care to get precise focus and maximum IQ.

Here is the retaken shot with 180 APO 2.8 and 2.0x APO extender and center crop of the shot:















Apr 07, 2009 at 06:09 AM
 



wayne seltzer
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p.4 #10 · Leica R for Canon telephoto alternatives


Here is a closer shot along with crop and the last one is a shot of a snowy egret:






















Apr 07, 2009 at 06:22 AM
robsteve
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p.4 #11 · Leica R for Canon telephoto alternatives


telyt wrote:
robsteve wrote: On the DMR I will sometimes get moire on siding like this. I know it is sharp when I see that. It usually shows up as you open the shot in Lightroom, but then disappears seconds later as Lightroom just deals with it.

Lightroom cleans up the moire? Kewl, tell more.

Not the bird feather or tweed suit kind, but the moire you see on fine/sharp edges.

Capture One V 4.5 or later works on the bird feather type, with a loss of sharpness in the area it applies it to.

I have noticed that the all the RAW processors have gotten better with moire as they introduce new versions.

Robert



Edited on Apr 07, 2009 at 12:34 PM · View previous versions

Apr 07, 2009 at 12:28 PM
robsteve
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p.4 #12 · Leica R for Canon telephoto alternatives


Wayne:

Looks like the 2x is working well. It may get a bit sharper at a higher shutter speed. don't be afraid to shoot the 180mm near wide open. According to Erwin Puts, the 180mm performance gets worse when stopped down past middle apertures.

Robert
Apr 07, 2009 at 12:31 PM
telyt
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p.4 #13 · Leica R for Canon telephoto alternatives


I've just started using the Leica 2x APO extender and so far I'm quite impressed. I typically test equipment in real-world conditions, which is how I'm likely to use the stuff. Here's a Marsh Wren photographed with the R8 and DMR, 280mm f/4 APO and the 2x APO extender. The camera was "supported" with my usual shoulder stock and monopod on unstable ground with an active subject. This is how I often find myself working so it's more a test of how the equipment works for me rather than a test of image quality under ideal conditions.

the full picture:


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100% crop:


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Note the motion blur in the bird's lower mandible.

Edited on Apr 07, 2009 at 01:13 PM · View previous versions

Apr 07, 2009 at 12:43 PM
robsteve
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p.4 #14 · Leica R for Canon telephoto alternatives


Doug:

I went back to an old file from the original DMR bible thread and reprocessed it in Lightroom to show how it deals with moire better.

Here is the full picture, just processed through lightroom. The maroon player also had lots or moire in his belt, which lightroom removed, but I don't have a crop of that from the older processing of the file.

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The old moire crop from a few years ago, looks like it may have been a Flexcolor conversion.

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A crop of about the same area, processed through Lightroom.



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Apr 07, 2009 at 01:05 PM
wayne seltzer
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p.4 #15 · Leica R for Canon telephoto alternatives


robsteve wrote:
Wayne:

Looks like the 2x is working well. It may get a bit sharper at a higher shutter speed. don't be afraid to shoot the 180mm near wide open. According to Erwin Puts, the 180mm performance gets worse when stopped down past middle apertures.

Robert


These last shots were mostly at f5.6 which is the fastest I can do with the 2x on the 180 APO 2.8 because I lose two stops, right?

Yes without the extender, the f2.8 performance is just incredible.

Apr 07, 2009 at 01:47 PM
robsteve
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p.4 #16 · Leica R for Canon telephoto alternatives


wayne seltzer wrote:
[

These last shots were mostly at f5.6 which is the fastest I can do with the 2x on the 180 APO 2.8 because I lose two stops, right?

Yes without the extender, the f2.8 performance is just incredible.

If you mean the lens was at f2.8 (wide open) with and effective f5.6 speed with the extender, that would have been the fastest you could shoot. With the converter, try stopping down half a stop or more, may with the lens set to anywhere from f3.5 to f5.6.

Robert

Apr 07, 2009 at 10:03 PM
wayne seltzer
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p.4 #17 · Leica R for Canon telephoto alternatives


Robert,

Ok, my confusion. I had the lens set at f5.6 with the extender connected so that means that the effective f-stop was really f5.6 + 2 stops = f11, right? I should have put the lens at f3.5 or f4.
I am coming from using the Canon extender on my Canon teles where the effective f-stop is what you tell the camera and the camera automatically does the rest and also prohibits your from setting the f-stop to below the len's fastest f-stop + 2 f-stops.

BTW, nice manual focusing work on the football shots! Super sharp.


Apr 08, 2009 at 12:24 AM
robsteve
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p.4 #18 · Leica R for Canon telephoto alternatives


Wayne:

Here are a few more football images with the 400mm f2.8. Takes a little eye hand coordination, but with the contrast of the Leica lens it is pretty obvious when it is in focus.

This is the QB getting sacked. In one of these sack photos he injured a knee. They won this game and went on to the national championships, but the QB did not recover from his injuries in time to play. They lost the national championships.

This image is copyrighted by the owner


The link below will bring up a gallery wit a few more images from the same game.

This image is copyrighted by the owner
Apr 08, 2009 at 11:42 PM
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