Chris Williams

I went for the Tamron 150-600. I am shocked how sharp it is. I am very pleased with it on my D750 as it is the only non Nikon lens I have but I am not afraid to use it. It also focuses extremely close compared to any of my other telephotos. It focuses 3 times as close as my 550mm F4.

ceallachain Loc: Cape May, NJ

I liked the Tamron. I have it and took it up the Danube. Able to do both near and far with the same lens with great clarity. Bought it in Bradenton for the FL landscape around Myakka Park. Not sure of the spelling there w/o looking it up.

pila

Get the best price. Rent

dannac Loc: 60 miles SW of New Orleans

Sigma 100-400 f/6.3 on my D7200

(Download)

dannac Loc: 60 miles SW of New Orleans

Is that the G2 version ?

olemikey Loc: 6 mile creek, Spacecoast Florida

Gotta love the CIZ, I have no plans to get rid of mine!!

olemikey Loc: 6 mile creek, Spacecoast Florida

Nice!!

amfoto1 Loc: San Jose, Calif. USA

The Sigma and Tamron 100-400s are not identical in features.

If it were me, I'd buy the Tamron for one reason, for one thing that makes it different from the Sigma... The Tamron lens can optionally be fitted with a tripod mounting ring. It sells separately for $129, adding to the cost of the lens, but I wouldn't want a 400mm without a tripod ring.

Sigma doesn't offer a tripod ring for their 100-400mm and the lens isn't designed to fit one. Yes, there are some third party rings made for it ("iShoot" and "Elefront" are two brands). But those fit around the control pod of the lens, so it will not be rotatable to a portrait orientation (one of the primary purposes of a tripod mounting ring). The "Koebele Stativschellen" ring pictured above appears to allow rotation, but it's made of plastic: https://www.amazon.co.uk/dp/B07GCX56GM

Further, the latest Tamron tripod rings, including the one for this lens, all have a built in dovetail to be compatible with Arca-Swiss quick release platforms. That saves having to buy a separate Arca-style lens plate (if you use the Arca-style QR system). Depending upon size and quality, those sell for between $30 and $50. Replacement tripod rings or ring feet costing from $75 to $150 or more from third party manufacturers and are another way to adapt some lenses to be able to use the Arca-style QR system. Since these are unnecessary in this case, the cost of the optional tripod ring might seem pretty reasonable.

WDCash Loc: Milford, Delaware, USA

That Heron with the fish tail eye patch is priceless.

waynetgreen Loc: Florida

I live in Parrish, just visited Myakka. That's what got me craving a telephoto. Small world!

the f/stops here Loc: New Mexico

I use the Tamron 100--400 and am very happy. The main reason I would go with Tamron is their 6 year warrantee. I had a Sigma that was at Sigma repair more the once for the same problem and they charged me big bucks to fix the same problem that they never could fix from the beginning. Here is a sample of the Tamron at 352mm. Look at the download and you'll find nice, sharp detail.

(Download)

BriEiz

I like Tamron better. I think it's morr of a preference like Canon vs. Nikon.

ceallachain Loc: Cape May, NJ

Will be snowbirding come January through May in Sarasota. See ya in the Park

billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

Thank you. Glad you liked it. Yeah, he played with that fish for about 10 minutes before he finally swallowed it. He was turned in the opposite direction and someone opened up with a load motor drive and he turned around, that's when I shot.

billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

Interesting, I shoot daily in Florida wetlands with a Nikon 200-500 on a D500 at a field of view of 750mm HAND HELD with no need for a tripod collar because I do not use a tripod.
I shoot at about 1/3000 to 1/4000 sec. and get tack sharp images. Many of use use this method without any deprivation in image quality.
So many photographers are convinced they have to put any telephoto on a tripod to get sharp images and it JUST AIN'T SO.
Good luck and keep on shooting until the end.
PS. Enjoy your lens and get out there and shoot.