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FORUMS Photography Talk by Genre Transportation Talk 
Thread started 11 Mar 2018 (Sunday) 11:10
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Looking for AF advice: First airshow with 5D4

 
treeofliberty
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Mar 11, 2018 11:10 |  #1

I just received my 5D4, stepping up from my 6D. I'll be breaking it in at an airshow at Luke AFB in Phoenix, in one week, using my 100-400 II, and a 1.4x III.

I am interested in any airshow advice for this combination, but I'm specifically looking for AF settings that maximize my keepers. Given the exceptional AF performance, and the lack of obstructions, I was just going to use all the AF points in Servo mode. However, I might be missing some unintended consequences, hence the question here.

Also, for the jets I was going to shoot in shutter priority (1600 for the jets and 160 for the props).

All advice is appreciated. I'd like to do my learning before the show. I've had a couple airshows in the recent years, but now this this sophisticated AF system.




  
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Engineered_Reflex
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Post edited 1 month ago by Engineered_Reflex.
     
Mar 11, 2018 11:31 |  #2

It's not a bad idea to use all of the AF points at an airshow for the flying displays, as long as there are few obstructions such as trees and lighting poles as these can be a bit of a pain in this mode. If this turns out to be the case and obstructions keep grabbing your focus then you can always go to a single point with 4 or 8 assistance points which works well for me, especially with slower moving aircraft.

In terms of the AF set up, I've overwritten a preset case with -1 for Tracking Sensitivity to stop obstructions breaking focus lock too quickly, 0 for Accel/Decal Tracking as aircraft are fairly predictable and +2 for auto point switching so that if I'm using all AF points or a zone the active point switched nice and briskly.

In terms of you shutter speeds, 1/160 seems a bit low to me with a 1.4 tc on unless you have particularly steady hands, I tend to use 1/250 for props and only go down to 1/160 when it's a helicopter. I just find this a bit safer, but if you're feeling confident you'll get more prop blur at 1/160. Also 1/1600 is really fast for jets, 1/1000 or 1/1250 are just fine. There's no harm in going up that high though if you have plenty of light.

I hope that helps, you can't go far wrong with the 5D IV. Looking forward to seeing your shots from the show.

Paul


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PhotosGuy
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Mar 11, 2018 12:34 |  #3

treeofliberty wrote in post #18582716 (external link)
Also, for the jets I was going to shoot in shutter priority (1600 for the jets and 160 for the props).

Shutter priority? 99% of the time I use manual, & suggest that you read this: Need an exposure crutch?


FrankC - 20D, RAW, Manual everything...
Classic Carz, Racing, Air Show, Flowers.
Find the light... A few Car Lighting Tips, and MOVE YOUR FEET!
Have you thought about making your own book? // Need an exposure crutch?
New Image Size Limits: Image must not exceed 1600 pixels on any side.

  
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BigAl007
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Mar 11, 2018 22:37 |  #4

Manual for me too, I would also recommend an incident lightmeter. If you don't want to buy one there is a very good one for both iOS and Android. It has the "analogue" circular scale which I like, so that you can quickly read all shutter/aperture combinations.

For the AF I too would use all points. On my older camera, a 50D, it starts out on the center point anyway, and then follows the subject from there. One thing I really recommend is switching it to AF Drive Off is AF not possible. This will stop the lens from trying to focus if you drop the AF off the aircraft completely, or you get a short obstruction. If you do lose the AC from the AF then the lens will do a full end to end AF rack, and you will completely lose the rest of that pass. I was really happy when I found this setting.

Setting a slow/low tracking sensitivity would also help, it will stop a focus movement for stuff the AF can get a closer reading on, while the drive stops hunting when there is no covered AF point.

Alan


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treeofliberty
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Mar 13, 2018 19:10 |  #5

Thanks to all for the help. I'm going to give these a run at the show in a few days, and hope to have some results to post.




  
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BigAl007
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Mar 18, 2018 19:08 |  #6

I thought I thought that I had better say that the incident lightmeter app that I use is called LightMeter (external link). I use the free version for Android, but it is also available for iOS too.

Alan


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BigAl007
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Apr 16, 2018 15:17 |  #7

So how did you get on at the show then? Would love to know.

Alan


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Looking for AF advice: First airshow with 5D4
FORUMS Photography Talk by Genre Transportation Talk 
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