jim quist Loc: Missouri

500 f4 with double stacked canon 2x extenders.

kbk

Never had good results with teleconverters because they reduce sharpness no matter how good they are. Either get a larger lens or get closer to your subject.

rbtree Loc: Shoreline, WA, United States

I have Topaz Photo AI and love it---I use it most for hi ISO astro images---or wildlife shots at higher ISO's. It's good for sharpening as well as NR, of course

rbtree Loc: Shoreline, WA, United States

I am going against all logic and sentiment in posting at least one image taken ---with stacked Canon EF 1.4 III AND 2x III Extenders...and..at 1.6 crop factor. (Canon R5, EF 500 f/4 L II + adaptor) I'm too lazy to go back to the original images to see if the 2nd (almost full) image was with the extender stack (don't think so)

I have had great success with extenders..as long as the lens is good--- I've used the same extenders on my Tamron 150-600 G2 with less than good results... but they are good with my 500 and EF 70-200 2.8 II..in the past, they were good with my 300 2.8 II and maybe

The first image is only 700 MB and the next one, being a hard crop, is way less. But, extender skeptics, please DL and enlarge these as much as you'd like. I'm happy enough with the sharpness and resolution of the first image, though the third is clearly better.

Tips for anyone shooting the moon at big magnifications: Use tripod, mirror lock up for DSLR's and go to your intervalometer and shoot at least three shots.. as 10 second delay might not be enough for camera movement to dissipate

Attached file:
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Attached file:
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Attached file:
(Download)

rbtree Loc: Shoreline, WA, United States

To jim quist a few posts up: Which extenders? My v III's require a short extension tube sandwich... and tend to throw an error after a shot or two... See my post just above this for a photo..at effective 2260mm (Canon R5, crop mode 500mm +1.4x+2x)

btbg

Isn't it interesting that the naysayers are telling us to either get closer or use a bigger lens instead of an extender.

Sometimes you just can't get closer and there are very linited choices of bigger lenses. The biggest lens I can find that Nikon makes is an 800 f6.3. Both your shots were 1200mm + and mine were 1120mm. Last I heard to get a good quality lens that big requires at least one tc, and may require stacking tcs.

rbtree Loc: Shoreline, WA, United States

The first shot was at 1400mm...or 2280 effective with the 1.6 crop factor. I love my extenders

seven1113

Your photos are beautiful. Thank you for sharing on here. I use a 2x myself.

rbtree Loc: Shoreline, WA, United States

Thanks.

Rocky Beech

I do a lot of bird photography here in Central Florida and my wife gave me a new Tamron 150 - 600 mm G2 for Christmas. I immediately ordered the Tamron 2X converter. I tuned the lens by itself and when the 2X arrived I was excited to try it out. I was disappointed for two reasons. One was that I found the difference between using the 2X converter vs not using it and cropping the difference was not noticeable to me. I tried Auto Focus and Focus peaking. The second reason was that Auto Focus does not work with the 2X converter that I confirmed with a phone call to Tamron. So I sold it and just use the lens by itself. I may look for a 1.4X converter as, according to the Tamron tech I spoke with Auto Focus is supposed to work.

flyboy61 Loc: The Great American Desert