Mark Urwiller

I took this photo with my EF 500mm f4 V1 attached to a modified EOS T3i. It's a single 5 minute exposure at 1600 ISO under a Bortle 1 sky at the Nebraska Star Party. Believe me there are much ...

Birdshooter, I moved on to purchase a used 500mm f4 V2. I didn't use the V1 on my R5 that many times, but I never had it lock up.  I haven't used my V2 that many times yet.  My V1 copy was very sharp!

Lens is sold.  Thanks to those who showed interest!  Mark U

The sale of this lens is pending.  I am out of town and will update the status on Tuesday.

I was asked if I had keys for the case - yes! I have also decided I will pay the shipping too.

Still available

Still available.

This lens will ship with a LensCoat which has been on it since I purchased it new. I took it off to photograph it and found almost no flaws, but they are clearly photographed and sized to 4K. The ...

I took this from a portable blind in the Nebraska Natl. Forest near Halsey Nebraska last weekend.  The birds weren't as close as I would have liked, but I hope to try again soon.  Photo taken with ...

The Canon 7DMKII is sold.  The 5DMKIV is still available, but is going on Ebay soon.

Canon 5DMKIV Price: $1,800.00 Payment method: PayPal Item condition: 9+ Shows little or no signs of wear Shipping instructions: USPS or UPS - your choice Camera body with Canon Log and only 7354 ...

You have some really nice photos Birdshooter7!  Questions - How far from the center do you get eye AF with the V1?  Do you shoot electronic or mechanical shutter?  I'm concerned about losing the ...

Thank you tenordrum!

Tenordrum, I'll check to see if I can get eye AF further away from the center.  I'm looking forward to getting away from the "center" focus and recomposing. Roger,  I think I probably will go with ...

Hello, I just purchased a new R5 and was using a 7DMKII with a version 1 EF 500mm f4 IS. I bought it new a year before the V2 came out and paid considerably less than the V2's go for now. I read ...

I'm not sure what you guys are talking about. I ordered an R5 from Adorama on Monday and had it by Tuesday.  Did I just get lucky?  I haven't checked availability there since.  The network I am on ...

All of the photos you posted are wonderful, but as a retired physics instructor I must admit I'm drawn to a wonderful example of atmospheric optics - the fogbow! Thanks for sharing and I know you ...

There's the drake Bufflehead!  It's nice to see the iridescent purple and green.  I've never been lucky enough to capture that.  Good Scaup photo too.  That lens is performing admirably! Mark U

Thanks for the information "t"

It's cute to see the one female Bufflehead mixed in with the young Western Grebes (Dark, not red, eyes and distinct white patch behind eye) .  Nice shots of the Snowy Egret and Burrowing Owl too.  ...