-= 90D owners unite! Discuss and Post Photos

David_Wales wrote in post #19103706
After shielding; not leaving house since 11 March 2020, I am now allowed out. To celebrate my wife bought me a Sigma 105mm macro lens and the picture below is my first attempt with it attached to 90d in my garden. No flash used, just natural sun light. It's about 50% cropped. EV: +1:67

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forum: Canon Digital Cameras

Stay Safe.

Wow. I live right smack in the middle of one the most infected areas in the world; if you saw a heat map of infections in mid-April, I'd be right in one of the brightest red dots. We have never been told to stay at home per se; what they have done is close down various destinations, mostly indoor, and requiring 6 foot distance and masks in businesses. Some smaller local parks were closed to automobiles, but you could walk in (to prevent crowding and keep the park for the locals).

The result is that a lot of the places that I go to photograph birds are much more crowded than they have been in past years, and the wildlife stays further from the paths. Whereas people used to jog mainly on the paths, they are now running through the grass, next to the river, and spooking the wildlife more. When non-essential businesses were allowed to re-open, the park crowds lessened a bit, but not like previous years.

David_Wales wrote in post #19103706
After shielding; not leaving house since 11 March 2020, I am now allowed out. To celebrate my wife bought me a Sigma 105mm macro lens and the picture below is my first attempt with it attached to 90d in my garden. No flash used, just natural sun light. It's about 50% cropped. EV: +1:67

Hosted photo: posted by David_Wales in
./showthread.php?p=191​03706&i=i186304520
forum: Canon Digital Cameras

Stay Safe.

Nice natural light shot. What does EV: +1:67 mean?

Hi,

The EV number displayed indicates an interval on the exposure scale, with a difference of 1 EV corresponding to 'Power-of-2' exposure, a Stop. So EV is really another term for illuminance (lx), just a different way of adding Exposure Compensation, by adding a Stop without using say; ND filters. In my exposure it was equivalent to roughly 3 seconds, even though the exif displays different. So in my case I added roughly 1 1/2 stops without filters by setting an AV combination of Shutter Speed and F-number that would give me multiple exposures at similar EV for a level of illuminance of 7 lux.

EV is a throw back to 35mm film days, but appears on photo information today when viewed from 90D touchscreen, and still has relevance by indicating the Exposure Compensation or Stop level without the use of filters.

I think I've got it right. ߤ

I have been lucky. I have some great trees and bushes outside my house, front and back, which afford me opportunity to take photos through the glass. Unlike yourself, I dont get people or animals walking passed, so the birds perch for some time giving my a reasonable chance to snap a few birds I have never seen in my garden before.

I only went out my door for the first time since 11 March, what a relief to breath in some fresh air and to sit in the sun. Don't suppose I will get too long out of shielding the way people are ignoring social distancing - mainly teenagers and Millennials who think their Invincible, bunch of DHs. The spread is already rising again in many areas and Counties, so better make use of new macro whilst I can before I'm lockup once more.

Thanks for your reply, appreciated.

Stay Safe.

David_Wales wrote in post #19104137
Hi,

The EV number displayed indicates an interval on the exposure scale, with a difference of 1 EV corresponding to 'Power-of-2' exposure, a Stop. So EV is really another term for illuminance (lx), just a different way of adding Exposure Compensation, by adding a Stop without using say; ND filters. In my exposure it was equivalent to roughly 3 seconds, even though the exif displays different. So in my case I added roughly 1 1/2 stops without filters by setting an AV combination of Shutter Speed and F-number that would give me multiple exposures at similar EV for a level of illuminance of 7 lux.

EV is a throw back to 35mm film days, but appears on photo information today when viewed from 90D touchscreen, and still has relevance by indicating the Exposure Compensation or Stop level without the use of filters.

I think I've got it right. ߤ

This is getting complicated!

So are you saying you gave 1.67 stops (or 1 1/2 stops) more exposure than indicated by the meter?

When I look at the LCD of my 90D, I don't see "EV".

Yes, and yes. It's a complicated subject which is worked out using an EV chart, for Shutter Speed, Apeture and EV:

"EV" is what grew up with but now it is referred to as exposure compensation.

gewb wrote in post #19104704
"EV" is what grew up with but now it is referred to as exposure compensation.

I was also wondering if this was just EC, exposure compensation.

gewb wrote in post #19104704
"EV" is what grew up with but now it is referred to as exposure compensation.

In context it means what the person who used it thought that it means, but that usage can be non-standard or confusing.

Ev should usually refer to an absolute light flux, and EC to a relative offset.

David_Wales wrote in post #19104609
Yes, and yes. It's a complicated subject which is worked out using an EV chart, for Shutter Speed, Apeture and EV:

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I even confused myself by saying the EV is displayed on the Touchscreen, which is wrong. The resultant EV is displayed on the actual image:

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In my case I see the EV when I have Bluetooth set on 90D and my mobile, so my images are sent directly to mobile so I can see clearly what the image exposure values are as the picture is taken allowing me to alter Shutter Speed, Apeture, Exposure Compensation etc to get the best illuminance without the use of filters.

Unlike other DSLRs, the 90D does not have a dedicated EV button (+/-), so the EV is achieved by a combination of Shutter Speed, ISO and Apeture. In my photograph I over exposed the image by +1.67, or roughly 1 1/2 stops to get my desired effect.

The following YouTube link explains this far better than I can:

Watch "Exposure Value Explained" on YouTube
https://youtu.be/ouziW​7mnWAs

Stay Safe.

Hi, David. I was actually not asking what EV meant, but more how you took the picture. You mentioned EV: +1:67. That was a clue, but it does not make sense. EV normally indicates a measure of brightness in the original scene, and 1.67 is not a typical value in normal daylight conditions. You mentioned that you set the camera to expose more, by 1.67 stops compared to what the metering suggested, so that is the answer to how the photo was taken. The image you posted with "EV: =1.67" in it does not seem to be "the actual image" but from the software you used to view the photo. That software does not seem to be using EV in a standard way here. As John mentions, EV is normally absolute, whereas here it seems to mean an offset.

I took a similar picture years ago. with a T3i, and a Tamron 70-300VC lens. Had the camera in AP mode and the lens zoomed to 300mm, and let the camera do the rest. This is a full resolution crop.

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Grain elevator just outside the village of Barons, Alberta.

Photo from Archibald's gallery.
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https://www.naturespot​.org.uk/species/hawtho​rn-shieldbug

I'm looking at getting a 90D but I've seen multiple posts about the AI-Servo using the OVF system being horrible. Has anyone noticed any issues with that? I'm certainly not looking for 1DX like tracking, but from some of the things I've seen it appears to be almost useless. Here's one of the threads I found: https://community.usa.​canon.com …F-performance/td-p/311140

The 90D checks every box I'm looking for, but if the tracking is this bad it's a deal breaker for me. Thanks!

I love the hi res sensor. But for BIF, the auto focus is unreliable. Even single focus point is soft. Stay away is my suggestion. When it works, great. That’s about 10%’ in my experience. I have tried everything except spot focus for BIF. Try that tomorrow. ߘ. YMMV.