Upright is an semi-automatied push-button solution to get rid of leveling and perspective convergence problems in your photos. It’s located in the Develop Module > Lens Corrections> Basic
- Enable Profile Correction and Remove Chromatic Abberation to make Upright work better
- Auto: applies a balanced level, aspect ratio, and perspective correction. Lines may not be perfectly vertical or horizontal, but it looks more natural.
- Level: Enable level correction only.
- Vertical: Enable level and vertical perspective correction only.
- Full: Enable full level, horizontal and vertical perspective corrections.
Synchronizing Upright Settings between multiple photos
- Upright Mode: Applies Upright to each photo individually. Each photo is evaluated independently.
- Upright Transforms: Applies the same Upright transformations to all the photos. Good for HDR or time lapse sequences.
Here is a few articles that show how studio flashes and speedlites differ in speed. The setup is to capture and freeze the motion of a drop of milk dropping.
- Speed of flash units for high speed flash photography http://www.scantips.com/speed.html
- Why Studio Flash and Speedlights are different Speeds. http://www.scantips.com/speed2.html
- Discharge Curves of Electronic Flash at Different Power Settings. http://www.chem.helsinki.fi/~toomas/photo/flash-discharge/regular.html
It’s definitely a good read. I can’t remember all the details of how tings work, but basically, lower power flash = faster light
Reddit User GeneralSarsby created this diagram to show the effect of lenses and the effects of changing to a 1.6x crop sensor. Nice!
So, yes, you can embed an entire camera raw into Photoshop as a smart object. There are a couple of ways to do this. This is the easiest one, though a bit unintuitive.
- Oopen your file in camera raw
- In the camera raw dialog box, click on the blue underlined text at the bottom center of the screen to access the Workflow Options dialog box.
- From the Workflow Options dialog box, you can choose to open in Photoshop As Smart Object.
The Reciprocity Law explains how exposures work in photography. Basically, the Total Exposure is determined by the intensity of the light times the duration of the light. So, if you want to change your camera settings and get the same exposure, whatever you move in one direction for one setting (longer shutter speed), you have to move the other setting in the opposite direction (smaller aperature).