Harvest Moon – Multi-stacked Teleconverter Tests

I tried a few different setups to photograph the Harvest Moon on October 1st. I was setup in my sunroom shooting out the side door. So I lined up a few teleconverters to try different combinations to see what combinations would work or not work well. The combinations of teleconverters is also based on which teleconverters would actually fit and go together in stacking because of protruding lenses or openings around the lenses in the teleconverters. In all I used 4 different brands of Teleconverter for my tests & 5 different teleconverters. I usually would use my 400mm f/4 DO lens but I loaned that to a friend so I was using the Tamron 150-600mm @ 600mm with the Teleconverter combinations. I was just curious of the quality of the images with different combinations of Teleconverters. The Featured Image was shot @ 600mm with a 2X Teleconverter.

Harvest Moon, 600mm, 2X Teleconverter & 1.4X Teleconverter
Harvest Moon, 1.4X, 1.7X & 2X Teleconverters with Tamron 150-600mm Lens @ 600mm
EOS R, 150-600mm Tamron Lens @600mm, 1.4X Teleconverter, 1.7X Teleconverter & Sigma 2X Teleconverter. iPhone Image of one of the stacked teleconverter combinations.

Blue Dasher Thorax & Wing Detail

I thought it was interesting to see the details of where the wings attach to the thorax on this Blue Dasher dragonfly’s body. I was using a 300mm f/4 lens with a 2x teleconverter and an extension tube to get a closer view. I usually carry extension tubes or closeup filters with me in case I come upon an interesting closeup photo opportunity. But I usually use extension tubes more than closeup filters because you are adding another glass element that might degrade the image. You can also experiment with the placement of the extension tube. Placing the extension tube before or after the teleconverter gives you different “focus zones.” Also the width of the extension tube gives you different focus zones. So it is best to see what combination works best for you and the lenses you are using. But it is fun to try different ways to get the image you want. Plus you never know when it will come in handy. Images below are a series of images using extension tubes & teleconverters with 300mm & 400mm lenses.

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Blue Dasher Dragonfly- 400mm f/4 DO Lens, extension tube, 1.4x teleconverter

Red-shouldered Hawk Take-Off Series

I am still going through files from past photo trips. Now that I am retired I have time to go back and work on images I had not gotten to adjust before. Work always seemed to get in the way. This is a series of images of a Red-shouldered Hawk take-off from a small branch at Ding Darling National Wildlife Refuge in Sanibel, Florida.  I was using a 400mm DO lens with a 1.4x Teleconverter on a Canon 7D (for an effective Full Frame Camera equivalent field of view of ~896mm). Many times at Ding Darling you see interesting photo opportunities but the subjects are quite far away. So it is fun to try different ways to photograph distant subjects. The more you try different techniques, the better your results and are more predictable. With a 1.4x teleconverter I would stop the lens down 1 more stop than I would usually use.  For a 2x teleconverter I would stop the lens down 2 stops more. With a 1.7x teleconverter I would also stop down 2 more stops than usual. Yes I actually found a 1.7x teleconverter for Canon lenses.

red_shouldered_hawk_v2DD_400mm_1_4X_7D_MG_6130Red-Shouldered_hawk_v2_dd_400mm_1_4x_7D_MG_6128Red-Shouldered_hawk_v2_dd_400mm_1_4x_7D__MG_6141Red-Shouldered_hawk_v2_dd_400mm_1_4x_7D_MG_6142Red-Shouldered_hawk_v2_dd_400mm_1_4x_7D_MG_6143Red-Shouldered_hawk_v3_dd_400mm_1_4x_7D_MG_6145Red-Shouldered_hawk_v2_dd_400mm_1_4x_7D_MG_6146Red-shouldered_hawk_v1_dd_400mm_1_4x_7D_MG_6147

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I was surprised it kept focus on the hawk and not on the branches as I was tracking the hawk.

 

Osprey Nests On Platforms @ 1200mm

A series of Osprey Platforms with nest images from the Edwin B. Forsythe NWR in Oceanville, NJ. I was using a Tamron 150-600mm lens with a 2X teleconverter to get closer to the Osprey Platforms. Then cropped in a little for a tighter composition. You can see the nests are not the neatest or cleanest when you are looking that close, but are still interesting. Also it is interesting when an Osprey sees you photographing them they really stare you down! The Canon R, even with a 2X teleconverter on a Tamron 150-600mm auto focuses quite quickly and right on focus. The Canon R will autofocus even with stacked 2x & 1.4X (or 1.7x) teleconverters. Did not try stacking 2X Teleconverters. I have also found that when stacking teleconverters I usually stop down a little more to help with sharpness.

Osprey_nest_v2_Brig_1200mm_76A7373Osprey on Nest_v2_76A7119Osprey on Nest_v2_76A7117Osprey on Nest_v7_1200mm_76A7115

 

Smiling Blue Dasher Dragonfly

For some reason Blue Dasher Dragonflies seem to look like they are smiling when you see them head on, giving an impression of a Happy Dragonfly. This Blue Dasher was out in a pond at a public county park, probably 6 to 8 feet from the shoreline. The featured image is a 4 shot Image Stack, manually focused and assembled in Photoshop. I used a combination of a 400mm lens, an extension tube, then a 1.4x teleconverter to actually enlarge the image on the sensor with the extension tube added. Sometimes I add another extension tube between the teleconverter and the camera body which enlargens the image on the sensor even more. But narrows your focus range even more and you tend to need a fill flash because of loss of light reaching the sensor to get a usable exposure for a subject that is somewhat moving its head or wings or its perch is moving in a breeze. Plus the added extension tubes also takes away light reaching the sensor. Sort of like the “Old” days when you were using a 4×5 or 8×10 view camera when you had the bellows racked out and had to adjust your exposure because of light loss from the distance of the lens and the film plane. By moving teleconverter and extension tubes you can get a variety of focus windows and enlargement of your final image on the sensor.

Blue_Dasher_HO v1 DM 7 18_43G9115

Blue Dasher 4 img Stack for Blue Dasher, then 4 image pano for the stick the Dasher was on. So 2 techniques used for final image.

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Older shot showing similar Setup with one 1.4x teleconverter plus fill flash needed for using two separated extension tubes.

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Another extreme setup with 2 extension tubes and 2 teleconverters. This really enlargens the image on the sensor but you need a fill flash or a very high ISO setting and has a very limited focus window.

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Dragonfly setup at my old pond

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