Research included in this article were conducted with a project: ‘Additive technology used in conduction with optical methods for rapid prototyping of 3D printed models’. In this article intellectualized three various 3D printing technologies: Fused Deposition Modelling (FDM), Selective Laser Sintering (SLS) and Material Jetting (PolyJet). Also, there was presented theory of Digital Image Correlation (DIC) as an optical method for strain analysis. The limitations of DIC system have been tested and detected. The test result for DIC system were shown for each method of additive technologies and the results were compared to Finite Element Method (FEM). Test specimens were printed in selected technologies for reference. DIC system has been used for displacement state in loaded objects. The last paragraph contains both summary and tests results.
 Lutowski Z. Marciniak B. Marciniak T. Bujnowski S. Precision of sub-pixel image displacement measurements. Journal of Machine Construction and Maintenance. 107 4/2017 ISSN 1232-9312.
 Brebbia C.A. Klemm A. Digital Image Correlation set-up. Materials characterisation VI: Computational Methods and Experiments. Southampton: WIT Press 2013.
 Saouma V. Cintron R. Strain Measurements with the Digital Image Correlation System Vic-2D. Mayaguez: University of Puerto Rico 2008.
 Amir M. Mirzendehdel Krishnan Suresh A Hands-on Introduction to Topology Optimization Paperback Academic Press September 2017.
 D. Chambers Digital Image Correlation: Advanced Methods and Applications (Materials Science and Technologies) Nova Science Pub Inc June 2017.
 Bibus Menos - FDM PolyJet SLS DMLS - technology materials 3d printers. [Online] https://www.bibusmenos.pl/oferta/drukarki-3d/.
 CadXpert - 3d printing technology and printer in FDM SLA SLS and Material Jetting. [Online] http://www.cadxpert.com.pl/.
 Rabbit Form - Article about 3D printing. [Online] http://www.rabbitform.pl/category/artykuly/.
 GOM Application example: Material testing; Material properties: Improved Determination of yield stress for sheet metal materials. [Online] www.lenso.com.pl/.
 KSMVision - The article about Digital Image Correlation - optical measurements. [Online] http://ksmvision.pl/cyfrowa-korelacja-obrazu/.
 Burzyńska-Szkoda K. Analysis of the displacements and deformations recorded with the use of Digital Image Correlation on the surfaces of selected machine elements [Online] www.biomech.pwr.wroc.pl/.../Instrukcja-ćwiczenie-1-cyfrowa-korelacja-obrazu-1.pdf.
 The 3D printing is more accurate than you think. [Online] HYPERLINK “http://swiatdruku3d.pl/druk-3d-dokladniejszy-niz-myslisz/?_sm_nck=1” http://swiatdruku3d.pl/druk-3d-dokladniejszyniz-myslisz/?_sm_nck=1.
 Make beautiful 3D prints understanding the layer thickness. [Online] https://www.sculpteo.com/blog/2015/07/29/make-beautiful-3d-prints-understanding-the-layer-thickness/