Freelance Photographer Cambridge - Blog | 29 - Speed it Up

July 27, 2017
bokeh photographic (Alistair Grant) - Freelance Photographer in Cambridge, St Ives, St Neots & Huntingdon. Food & Drink Photographer, Food Photographer, Drink Photographer, Product Photographer, Packshot Photographer, Pack Shot Photographer, Commercial Photographer, Restaurant Photographer, Culinary Photographer, Catering Photographer, Industrial Photographer, Agricultural Photographer, Farming Photographer, Editorial Photographer, Feature Photographer, Advertising Photographer, Event Photographer, Conference Photographer, Corporate Photographer, Business Photographer, Portrait Photographer, PR Photographer, Wedding Photographer, Property Photographer, Architectural Photographer, School Photographer and Photographic Training Courses in Cambridgeshire, Bedfordshire, Norfolk, Suffolk, Essex, Hertfordshire and East Anglia. St Ives, Cambridgeshire. Email: alistair.grant@bokehphotographic.co.uk, Tel: 07775 365507.    
Page Title Artwork - Blog written in grey text on a bright green rectangular background with a grey border. © bokeh photographic (Alistair Grant): Food Photographer, Commercial Photographer, Product Photographer, Packshot Photographer, Headshot Photographer, Industrial Photographer, Business Photographer, Event Photographer, Conference Photographer, Portrait Photographer, Corporate Photographer, PR Photographer, Wedding Photographer and Photography Training in Cambridgeshire, Bedfordshire, Norfolk, Suffolk, Essex, Hertfordshire and across the UK. Blog Page Title Artwork | bokeh photographic - Alistair Grant | Freelance Photographer - Cambridge, London & UK.Blog Page Title Graphic by Alistair Grant - Professional Photographer providing: Food & Drink Photography; Commercial Photography (Product Photography, Packshot Photography, Headshot Photography, Industrial Photography and all types of Business Photography); Event Photography; Conference Photography; Portrait Photography; Corporate Photography; PR Photography; Wedding Photography and Photography Training Courses in Cambridge, London and across the UK. St Ives, Cambridge: Email: alistair.grant@bokehphotographic.co.uk, Tel: 07775 365507.  

bokeh photographic 35mm Film Artwork - bokeh photographic written in dark blue text  superimposed over picture of Angel of the North simulated as a 35mm film photographic contact sheet frame. © bokeh photographic (Alistair Grant): Food Photographer, Commercial Photographer, Product Photographer, Packshot Photographer, Headshot Photographer, Industrial Photographer, Business Photographer, Event Photographer, Conference Photographer, Portrait Photographer, Corporate Photographer, PR Photographer, Wedding Photographer and Photography Training in Cambridgeshire, Bedfordshire, Norfolk, Suffolk, Essex, Hertfordshire and across the UK.bokeh photographic 35mm Film Artwork | bokeh photographic - Alistair Grant | Freelance Photographer - Cambridge, London & UK.bokeh photographic 35mm Film Graphic by Alistair Grant - Professional Photographer providing: Food & Drink Photography; Commercial Photography (Product Photography, Packshot Photography, Headshot Photography, Industrial Photography and all types of Business Photography); Event Photography; Conference Photography; Portrait Photography; Corporate Photography; PR Photography; Wedding Photography and Photography Training Courses in Cambridge, London and across the UK. St Ives, Cambridge: Email: alistair.grant@bokehphotographic.co.uk, Tel: 07775 365507.

   Alistair Grant 

Freelance Photographer Cambridge & London

     

bokeh photographic: Blog 29

Freelance Photographer Cambridge Blog Image | Blog 29 - Gourmet Brownie cracking eggs into a bowl captured using the latest Insulated Gate Bipolar Transistor (IGBT) high-speed studio flash © bokeh photographic (Alistair Grant): Freelance Photographer, St Ives, Cambridge, London and across the UK.Blog 29 - Speed it Up (Gourmet Brownie cracking eggs into a bowl captured using the latest Insulated Gate Bipolar Transistor (IGBT) high-speed studio flash) | bokeh photographic - Alistair Grant | Freelance Photographer – Cambridge & London.Blog 29 - Speed it Up (Gourmet Brownie cracking eggs into a bowl captured using the latest Insulated Gate Bipolar Transistor (IGBT) high-speed studio flash) by Alistair Grant - Food Photographer; Commercial Photographer; Event Photographer; Portrait Photographer; Corporate Photographer; PR Photographer; Wedding Photographer and Photographic Training Courses in Cambridgeshire, Bedfordshire, Norfolk, Suffolk, Essex, Hertfordshire and across the UK. Email: alistair.grant@bokehphotographic.co.uk, Tel: 07775 365507.

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  About The Blog Artwork – About The Blog written in thick white chalk on square blackboard with green border. © bokeh photographic (Alistair Grant): Food Photographer, Commercial Photographer, Product Photographer, Packshot Photographer, Headshot Photographer, Industrial Photographer, Business Photographer, Event Photographer, Conference Photographer, Portrait Photographer, Corporate Photographer, PR Photographer, Wedding Photographer and Photography Training in Cambridgeshire, Bedfordshire, Norfolk, Suffolk, Essex, Hertfordshire and across the UK. About The Blog Blackboard Artwork | bokeh photographic - Alistair Grant | Freelance Photographer - Cambridge, London & UK.About The Blog Blackboard Graphic by Alistair Grant - Professional Photographer providing: Food & Drink Photography; Commercial Photography (Product Photography, Packshot Photography, Headshot Photography, Industrial Photography and all types of Business Photography); Event Photography; Conference Photography; Portrait Photography; Corporate Photography; PR Photography; Wedding Photography and Photography Training Courses in Cambridge, London and across the UK. St Ives, Cambridge: Email: alistair.grant@bokehphotographic.co.uk, Tel: 07775 365507.
  Latest Artwork - Latest written in thick white chalk on square blackboard with green border. © bokeh photographic (Alistair Grant): Food Photographer, Commercial Photographer, Product Photographer, Packshot Photographer, Headshot Photographer, Industrial Photographer, Business Photographer, Event Photographer, Conference Photographer, Portrait Photographer, Corporate Photographer, PR Photographer, Wedding Photographer and Photography Training in Cambridgeshire, Bedfordshire, Norfolk, Suffolk, Essex, Hertfordshire and across the UK. Latest Blackboard Artwork | bokeh photographic - Alistair Grant | Freelance Photographer - Cambridge, London & UK.Latest Blackboard Graphic by Alistair Grant - Professional Photographer providing: Food & Drink Photography; Commercial Photography (Product Photography, Packshot Photography, Headshot Photography, Industrial Photography and all types of Business Photography); Event Photography; Conference Photography; Portrait Photography; Corporate Photography; PR Photography; Wedding Photography and Photography Training Courses in Cambridge, London and across the UK. St Ives, Cambridge: Email: alistair.grant@bokehphotographic.co.uk, Tel: 07775 365507.
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  Mailing List Artwork – Mailing List written in thick white chalk on square blackboard with green border. © bokeh photographic (Alistair Grant): Food Photographer, Commercial Photographer, Product Photographer, Packshot Photographer, Headshot Photographer, Industrial Photographer, Business Photographer, Event Photographer, Conference Photographer, Portrait Photographer, Corporate Photographer, PR Photographer, Wedding Photographer and Photography Training in Cambridgeshire, Bedfordshire, Norfolk, Suffolk, Essex, Hertfordshire and across the UK.Mailing List Blackboard Artwork | bokeh photographic - Alistair Grant | Freelance Photographer - Cambridge, London & UK.Mailing List Blackboard Graphic by Alistair Grant - Professional Photographer providing: Food & Drink Photography; Commercial Photography (Product Photography, Packshot Photography, Headshot Photography, Industrial Photography and all types of Business Photography); Event Photography; Conference Photography; Portrait Photography; Corporate Photography; PR Photography; Wedding Photography and Photography Training Courses in Cambridge, London and across the UK. St Ives, Cambridge: Email: alistair.grant@bokehphotographic.co.uk, Tel: 07775 365507.
 

Speed it Up 

One of the most exciting aspects of photography is to stop time i.e. freezing movement at a particular point in order to see ‘stopped detail’ that our eyes and brain can’t distinguish and can only perceive as motion. Although most amateur photographers fall into the trap of thinking a fast shutter speed is the best way to freeze movement, using flash is often a better option. Nevertheless, whilst freezing action with flash can produce stunning images it can be tricky due to the limitations of established flash technologies not to mention the failure of many photographers to understand how flash works.

If I have previously shot a Food & Drink Photography assignment for you where action has been stopped in order to reveal detail you will have direct experience of the considerable lengths I had to go to in order to overcome the limitations of conventional flash technology i.e. my generally invalidating manufacturers' warranties through hotwiring various bits of kit to capture pancakes mid-flip, drinks mid-pour, flour mid-sift and, on more than one occasion, to capture sherbet mid-explosion. To avoid invalidating warranties (as well as significantly shortening the setup time for shoots) I have now invested in the very latest Insulated Gate Bipolar Transistor (IGBT) high-speed studio flash. Whilst I am going to miss fiddling around with screwdrivers the performance of these strobes has greatly impressed. This out-take is from a recent shoot for Gourmet Brownie: producers of the most delicious hand-baked brownies. Despite strong ambient light the IGBT high-speed strobes allowed me to completely freeze the action of 64 eggs being rapidly cracked into a bowl in just a minute or so - just look at how sharp the 'moving' parts of the image are.

How does the technology work? I look for an extremely clean and exceptionally crisp image when aiming to freeze action whilst shooting high-speed flash. In other words, no motion artefact and no ghost trails; otherwise what’s the point of employing an expensive high-speed flash unit? In (highly simplified) terms, high-speed flash achieves clean and crisp images by switching on very quickly but also switching off very quickly. This can be explained by considering flash discharge curves: plots of energy intensity (vertical axis) against time (horizontal axis). When a conventional flash unit is discharged, energy stored in the capacitor causes rapid ionization of the xenon gas within the flash tube which results in a very steep upward curve in energy (and therefore flash brightness) followed by a much less steep downward curve back to zero NB: this happens so quickly we perceive only a brief burst of light. Two indices are important when considering flash discharge curves: t.5 is the time taken for 50% of the total flash power to dissipate to zero whereas t.1 is the time taken for 90% of the total flash power to dissipate to zero. Although flash manufacturers tend to quote t.5 data as these appear more flattering t.1 is arguably more important. A flash discharge curve with a ‘long tail’ (i.e. a slow t.1) means that the flash continues to emit light longer after discharge and that light, although declining, may be sufficient to cause movement artefact. The only reliable way to freeze movement without artefact is to use a flash unit that has a short tail (i.e. a fast t.1) or even a flash that truncates the downward energy curve back to zero – i.e. a flash that not only achieves peak energy output very quickly but a flash that drops to zero energy output very quickly. This is exactly the technology employed by my IGBT high-speed strobes which boast, at minimum flash power, a t.1 of 1/35086 sec compared to 1/900 sec for my (top of the range) standard flash. I mention power as t.1 times are affected by flash intensity as is flash colour temperature. However, as I’ve probably frazzled your brain with all the above I’ll leave explaining these, and camera sync speed, to a future blog post. I haven’t yet even gone close to pushing the kit to its maximum performance so watch this space. Bring on the pancakes, drinks, flour and sherbet!

   

→ Call Alistair Grant on 07775 365507, Email alistair.grant@bokehphotographic.co.uk or click Booking Enquiries if you have any questions or would like to make a booking.

   
     

bokeh: "the aesthetic quality of the blur produced in the out-of-focus parts of an image produced by a lens"


Alistair Grant (bokeh photographic) –Cambridge, St Ives, St Neots & Huntingdon Freelance Photographer providing Food & Drink Photography, Food Photography, Drink Photography, Product Photography, Packshot Photography, Pack Shot Photography, Commercial Photography, Restaurant Photography, Culinary Photography, Catering Photography, Industrial Photography, Agricultural Photography, Farming Photography, Editorial Photography, Feature Photography, Advertising Photography, Event Photography, Conference Photography, Corporate Photography, Business Photography, Portrait Photography, PR Photography, Wedding Photography, Property Photography, Architectural Photography, School Photography and Photography Training Courses in Cambridge, London, Huntingdon, St. Ives, Ramsey, St. Neots, Peterborough, Bedford, Stamford, Newmarket, Sawtry, Alconbury Weston, Brampton, Hartford, Warboys, Houghton, Wyton, Godmanchester, Hilton, Hemingford Grey, Hemingford Abbots, Fenstanton, Whittesley, Yaxley, Needingworth, Somersham, Chatteris, Ely, Bar Hill, Grafham and Buckden.

  Back To Page Top Artwork – Upwards grey arrow on green square with grey border. © bokeh photographic (Alistair Grant): Food Photographer, Commercial Photographer, Product Photographer, Packshot Photographer, Headshot Photographer, Industrial Photographer, Business Photographer, Event Photographer, Conference Photographer, Portrait Photographer, Corporate Photographer, PR Photographer, Wedding Photographer and Photography Training in Cambridgeshire, Bedfordshire, Norfolk, Suffolk, Essex, Hertfordshire and across the UK.Back to Page Top Artwork | bokeh photographic - Alistair Grant | Freelance Photographer - Cambridge, London & UK.Back To Page Top Graphic by Alistair Grant - Professional Photographer providing: Food & Drink Photography; Commercial Photography (Product Photography, Packshot Photography, Headshot Photography, Industrial Photography and all types of Business Photography); Event Photography; Conference Photography; Portrait Photography; Corporate Photography; PR Photography; Wedding Photography and Photography Training Courses in Cambridge, London and across the UK. St Ives, Cambridge: Email: alistair.grant@bokehphotographic.co.uk, Tel: 07775 365507.

bokeh photographic - Alistair Grant | Freelance Photography - Food & Drink Photography - Photography Training | Cambridge - London - UK | Tel: 07775 365507