Ellis Vener

Ellis Vener

Lives in United States Atlanta, USA, United States
Works as a photographer
Has a website at http://www.ellisvener.com
Joined on Feb 6, 2004
About me:

Professional photographer since 1984.

Comments

Total: 622, showing: 1 – 20
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In reply to:

Ellis Vener: Two comments:

1) When you shift the lens position you shift the point of view. Not a problem usually with single frames, but if there is significant overlap between an object in the near foreground and the background if you shift the lens to create a two of three frame panorama you can end up with some nasty parallax errors that can be a pain to fix.

2) To avoid this it’s better to keep the lens in a fixed position and shift the position of the sensor instead. That’s why Laowa makes the lens mount bracket, which you didn’t review.

Chris, was that mount not available or did you just choose not to use it?

Per probert500’s comment:
If you are photographing landscape and building exteriors where there are not significant distance differences between the near and far objects, parallax is rarely an issue, but for interiors it is best to deal with the parallax by avoiding it.

Link | Posted on Nov 27, 2020 at 21:12 UTC
In reply to:

Ellis Vener: Two comments:

1) When you shift the lens position you shift the point of view. Not a problem usually with single frames, but if there is significant overlap between an object in the near foreground and the background if you shift the lens to create a two of three frame panorama you can end up with some nasty parallax errors that can be a pain to fix.

2) To avoid this it’s better to keep the lens in a fixed position and shift the position of the sensor instead. That’s why Laowa makes the lens mount bracket, which you didn’t review.

Chris, was that mount not available or did you just choose not to use it?

Peter,
Yes I have one of the Rogeti collars for the Canon 17 and 24mm TS-E lenses. A friend has one made by another company for the Nikon 19mm PC-E lens.

Link | Posted on Nov 27, 2020 at 12:30 UTC
In reply to:

Indohydra: excellent. I would like to have seen some comparisons between using a tilt shift and correcting perspective in photoshop.

@Always Amateur,
Thanks for turning me on to that blog!

Link | Posted on Nov 27, 2020 at 00:24 UTC

Two comments:

1) When you shift the lens position you shift the point of view. Not a problem usually with single frames, but if there is significant overlap between an object in the near foreground and the background if you shift the lens to create a two of three frame panorama you can end up with some nasty parallax errors that can be a pain to fix.

2) To avoid this it’s better to keep the lens in a fixed position and shift the position of the sensor instead. That’s why Laowa makes the lens mount bracket, which you didn’t review.

Chris, was that mount not available or did you just choose not to use it?

Link | Posted on Nov 27, 2020 at 00:20 UTC as 9th comment | 5 replies
In reply to:

esmoxd: Back in the old SLR/DSLR days without a tilt screen we used an angle finder!

Or bent our knees or better yet, used Polaroid (yes even on 35mm cameras!)

Link | Posted on Nov 27, 2020 at 00:10 UTC

One of the most interesting stories I’ve heard about McCullin is that at one point during the Vietnam War he was embedded with a squad or platoon of young American soldiers (not sure if they were Army or Marines.) The officers and NCOs had been killed. The young soldiers were scared and losing their ability to function.McCullin realized that something had to be done or they were all going to die or be captured. Also given his age and experience, they were looking to him for leadership. McCullin took charge and led the survivors to safety.

I hope I’m not confusing him with another photojournalist but I’m pretty sure it was McCullin.

Link | Posted on Nov 23, 2020 at 21:19 UTC as 7th comment | 1 reply
On article DPReview TV: Best smartphone gimbal (60 comments in total)

I don’t want to remove my phone from the case. How wide does the DJI clamp open?

Link | Posted on Nov 22, 2020 at 20:31 UTC as 9th comment | 2 replies
In reply to:

DHAPhotography: I was looking to purchase his three-volume book. But $1,200 USD isn't just something I can justify. Who pays $1,200 for a book?

People who have that kind of money.

Link | Posted on Nov 21, 2020 at 01:19 UTC

She has proven herself to be a fine, empathetic director of human drama and likewise Hardy is an excellent actor. Any word on who the cinematographer will be?

Link | Posted on Nov 21, 2020 at 01:18 UTC as 24th comment
In reply to:

careybob: Aren’t all of NASA’s photos in the public domain? Four years ago, I downloaded several hundred jpegs for a video. I was fascinated by the photos of Earth. I put the video on YouTube and backed it up on Vimeo: https://vimeo.com/149763603

As Eric points out, these are prints. The original transparencies and negatives are held in very secure conditions by NASA and presumably also by the equivalents of other nations.

Link | Posted on Nov 15, 2020 at 17:26 UTC

I am baffled. Surely it would make more sense for Profoto to hire Godox to make a Profoto mount version of the S2. Even if Godox charged Profoto a 50% premium over the retail price of the S2, wouldn’t Profoto have been able mark the price by 150 or 200% and, at least in theory, would be able to sell more because of the lower price?

Link | Posted on Nov 11, 2020 at 18:28 UTC as 14th comment | 1 reply

The RAM is limited to 16GB in the M1 Mini and 13” M1 MBP.

Link | Posted on Nov 10, 2020 at 19:40 UTC as 108th comment | 14 replies
In reply to:

Ellis Vener: "There is never a point where if you order a large enough quantity of an item you get it for free."

That reminds me of a time where I was buying film and the clerk told me that it was 1% off per roll I bought.
Me: "So if I buy 20 rolls, I get a 20% discount?"
Clerk: "Yes.
Me: "Okay, I'd like a 100 rolls then."
Clerk (taps numbers into a calculator): "Wait a minute, I need to get the owner."

The mistake the owner made in not setting a maximum size to the discount.

Link | Posted on Nov 4, 2020 at 07:24 UTC
In reply to:

ProDude: Yes, and with all that said, for ME if I've gotten a lens in the past, that was either not sharp in the center or exceedingly less sharp at either side it goes back. I'm happy to say that after 20+ years of lenses received from Canon, Nikon, Panasonic, Olympus and Fuji I only had ONE Nikon (a 70-300) and Fuji (a 100-400) lens go back as they weren't sharp at one side and in the case of the Nikon exceedingly decentered. But there's NO way I ever assume a lens I get will be acceptable till I put it through it's sharpness paces. All Roger's explanations are great. Bottom line however variation or not it's either a "good" one or it "AIN"T".

I went through three Canon EF 17-40mm f/4L lenses, all from different sources and with very different serial numbers, and never got one that as acceptable, and this was back when “high resolution” meant 22.3 mount. Even on a 1D Mark II none of them yielded acceptable (to me) results at any aperture. I even tried one from a rental house. All were dogs.

Link | Posted on Nov 4, 2020 at 00:51 UTC
In reply to:

Halftrack: Interesting fact: the optics in the Hubble are actually QA rejects from military spy satellites. No joke.

Not all of them.

Link | Posted on Nov 4, 2020 at 00:45 UTC
In reply to:

Ellis Vener: "There is never a point where if you order a large enough quantity of an item you get it for free."

That reminds me of a time where I was buying film and the clerk told me that it was 1% off per roll I bought.
Me: "So if I buy 20 rolls, I get a 20% discount?"
Clerk: "Yes.
Me: "Okay, I'd like a 100 rolls then."
Clerk (taps numbers into a calculator): "Wait a minute, I need to get the owner."

The manager/owner and I had a good laugh about it.

Link | Posted on Nov 4, 2020 at 00:20 UTC

"There is never a point where if you order a large enough quantity of an item you get it for free."

That reminds me of a time where I was buying film and the clerk told me that it was 1% off per roll I bought.
Me: "So if I buy 20 rolls, I get a 20% discount?"
Clerk: "Yes.
Me: "Okay, I'd like a 100 rolls then."
Clerk (taps numbers into a calculator): "Wait a minute, I need to get the owner."

Link | Posted on Nov 3, 2020 at 22:19 UTC as 49th comment | 5 replies
In reply to:

JackM: Of course. Because I just bought a Canon 17 TSE.

Now you need the Rogeti TSE-3 frame for that lens.

Link | Posted on Nov 3, 2020 at 01:17 UTC
In reply to:

Ad12: Forgive my ignorance, but I thought it was the tilt part of tilt shift lenses that allowed the proper framing and ensuring the sensor remains parallel to the building. What does a shift achieve? Couldn’t you just use a taller tripod?

Again, forgive my ignorance, curious.

“ I wonder then also, could you with a shift lens, take multiple exposures as you shift it around, and combine as some form of high resolution composite image?”

Yes. Ideally the lens has its own mount and you shift the position of the sensor (the camera body). This eliminates parallax (which is what occurs as the spatial relationship between near and far points relative to the lens position ) as the point of view remains the same. You can even do what I call a “daisy stitch” by shifting the position of the body radially.

The British company Rogeti (https://www.Rogeti.com) makes such a cage bracket for current Canon TS-E lenses. There is another company that makes one for the Nikon PC-E lenses.

Link | Posted on Nov 1, 2020 at 01:26 UTC

Outside of the angle of view and the shift capabilities, what really interests me about this is the lens collar.
Mounting the lens to the tripod allows for shifting the position of the body instead of the lens, and that means no parallax errors in simple linear stitched panoramas. Take it a step further and find the nodal point for the lens and you have an easier and faster method to do multi-row even wider angle higher resolution panoramas by simply shifting the camera (in portrait orientation) up and down for each column and then rotating the camera.

Currently I do this using a Rogeti TS-3+ frame for Canon TS-E 17mm and 24mm lenses. But for my Nikon Z7 I also need an EF to Z adapter. Having a native Z mount lens will just simplify everything.

Link | Posted on Oct 31, 2020 at 18:44 UTC as 3rd comment | 1 reply
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